AGA Guideline: Treatment of opioid-induced constipation

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For patients with suspected opioid-induced constipation, start by taking a careful history of defecation and dietary patterns, stool consistency, incomplete evacuation, and “alarm symptoms,” such as bloody stools or weight loss, state new guidelines from the American Gastroenterological Association in Gastroenterology.

Hemera/thinkstock

Clinicians also should rule out other causes of constipation, such as pelvic outlet dysfunction, mechanical obstruction, metabolic abnormalities, and comorbidities or concurrent medications, wrote Seth D. Crockett, MD, MPH, of the University of North Carolina at Chapel Hill, together with his associates. The guideline was published online Sept. 1.

Opioid therapy can lead to a range of gastrointestinal symptoms, such as constipation, gastroesophageal reflux, nausea and vomiting, bloating, and abdominal pain. Among these, constipation is by far the most common and debilitating, the guideline notes. In past studies, 40%-80% of patients who received opioids developed opioid-induced constipation (OIC), a more severe presentation that involves a combination of reduced stool frequency in addition to other symptoms, such as harder stools, new or worsening straining during defecation, and a sense of incomplete rectal evacuation.

Treating OIC should start with lifestyle interventions, such as drinking more fluids, toileting as soon as possible when feeling the urge to defecate, and adding regular moderate exercise whenever tolerable, the guideline advises. For patients on oral or parenteral therapy, consider switching to an equianalgesic dose of a less-constipating opioid, such as transdermal fentanyl or oxycodone-naloxone combination therapy.

Many patients with OIC require interventions beyond lifestyle changes or opioid switching. For these patients, the guideline advises starting with conventional laxative therapies based on their safety, low cost, and “established efficacy” in the OIC setting. Options include stool softeners (docusate sodium), osmotic laxatives (polyethylene glycol, magnesium hydroxide, magnesium citrate, and lactulose), lubricants (mineral oil), and stimulant laxatives (bisacodyl, sodium picosulfate, and senna). “Of note, there is little evidence that routine use of stimulant laxatives is harmful to the colon, despite widespread concern to the contrary,” the guideline states. Although randomized, controlled trials have not evaluated particular laxative combinations or titrations for OIC, the best evidence supports stimulant and osmotic laxative therapy, the authors note.

Before deeming any case of OIC laxative refractory, ensure that a patient receives an adequate trial of at least two classes of laxatives administered on a regular schedule, not just “as needed,” the guideline specifies. For example, a patient might receive a 2-week trial of a daily osmotic laxative plus a stimulant laxative two to three times weekly. The guideline authors suggest restricting the use of enemas to rescue therapy. They also note that consuming more fiber tends not to help patients with OIC because fiber does not affect colonic motility.

For truly laxative-refractory OIC, the guidelines recommend escalating treatment to peripherally acting mu-opioid receptor antagonists (PAMORAs). These drugs restore the function of the enteric nervous system by blocking mu-opioid receptors in the gut. Among the PAMORAs, the guideline strongly recommends the use of naldemedine or naloxegol over no treatment, based on robust data from randomized, double-blind, placebo-controlled trials. In the phase 3 COMPOSE 1, 2, and 3 trials, about 52% of patients who received naldemedine achieved at least three spontaneous bowel movements per week, compared with 35% of patients who received placebo. Additionally, in a 52-week safety and efficacy study (COMPOSE 3), naldemedine was associated with one more spontaneous bowel movement per week versus placebo and with a low absolute increase in adverse events.

The guideline bases its strong recommendation for naloxegol on moderate-quality data from three studies, including two phase 3, double-blind, randomized, placebo-controlled trials. Although at least five randomized, controlled trials have evaluated methylnaltrexone, the evidence was low quality and therefore the guideline only conditionally recommends prescribing this PAMORA over no treatment.

The guideline also makes no recommendation on the use of the intestinal secretagogue lubiprostone or the 5HT agonist prucalopride. Studies of lubiprostone were limited by possible reporting bias and showed no clear treatment benefit, the authors state. They describe a similar evidence gap for prucalopride, noting that at least one trial ended early without publication of the findings. They recommend further studying lubiprostone as well as prucalopride and other highly selective 5-HT4 agonists for treating OIC. Head-to-head trials would help guide treatment choice for patients with laxative-refractory OIC, they add. “Cost-effectiveness studies are also lacking in this field, which could inform prescribing strategy, particularly for newer, more expensive agents.”

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For patients with suspected opioid-induced constipation, start by taking a careful history of defecation and dietary patterns, stool consistency, incomplete evacuation, and “alarm symptoms,” such as bloody stools or weight loss, state new guidelines from the American Gastroenterological Association in Gastroenterology.

Hemera/thinkstock

Clinicians also should rule out other causes of constipation, such as pelvic outlet dysfunction, mechanical obstruction, metabolic abnormalities, and comorbidities or concurrent medications, wrote Seth D. Crockett, MD, MPH, of the University of North Carolina at Chapel Hill, together with his associates. The guideline was published online Sept. 1.

Opioid therapy can lead to a range of gastrointestinal symptoms, such as constipation, gastroesophageal reflux, nausea and vomiting, bloating, and abdominal pain. Among these, constipation is by far the most common and debilitating, the guideline notes. In past studies, 40%-80% of patients who received opioids developed opioid-induced constipation (OIC), a more severe presentation that involves a combination of reduced stool frequency in addition to other symptoms, such as harder stools, new or worsening straining during defecation, and a sense of incomplete rectal evacuation.

Treating OIC should start with lifestyle interventions, such as drinking more fluids, toileting as soon as possible when feeling the urge to defecate, and adding regular moderate exercise whenever tolerable, the guideline advises. For patients on oral or parenteral therapy, consider switching to an equianalgesic dose of a less-constipating opioid, such as transdermal fentanyl or oxycodone-naloxone combination therapy.

Many patients with OIC require interventions beyond lifestyle changes or opioid switching. For these patients, the guideline advises starting with conventional laxative therapies based on their safety, low cost, and “established efficacy” in the OIC setting. Options include stool softeners (docusate sodium), osmotic laxatives (polyethylene glycol, magnesium hydroxide, magnesium citrate, and lactulose), lubricants (mineral oil), and stimulant laxatives (bisacodyl, sodium picosulfate, and senna). “Of note, there is little evidence that routine use of stimulant laxatives is harmful to the colon, despite widespread concern to the contrary,” the guideline states. Although randomized, controlled trials have not evaluated particular laxative combinations or titrations for OIC, the best evidence supports stimulant and osmotic laxative therapy, the authors note.

Before deeming any case of OIC laxative refractory, ensure that a patient receives an adequate trial of at least two classes of laxatives administered on a regular schedule, not just “as needed,” the guideline specifies. For example, a patient might receive a 2-week trial of a daily osmotic laxative plus a stimulant laxative two to three times weekly. The guideline authors suggest restricting the use of enemas to rescue therapy. They also note that consuming more fiber tends not to help patients with OIC because fiber does not affect colonic motility.

For truly laxative-refractory OIC, the guidelines recommend escalating treatment to peripherally acting mu-opioid receptor antagonists (PAMORAs). These drugs restore the function of the enteric nervous system by blocking mu-opioid receptors in the gut. Among the PAMORAs, the guideline strongly recommends the use of naldemedine or naloxegol over no treatment, based on robust data from randomized, double-blind, placebo-controlled trials. In the phase 3 COMPOSE 1, 2, and 3 trials, about 52% of patients who received naldemedine achieved at least three spontaneous bowel movements per week, compared with 35% of patients who received placebo. Additionally, in a 52-week safety and efficacy study (COMPOSE 3), naldemedine was associated with one more spontaneous bowel movement per week versus placebo and with a low absolute increase in adverse events.

The guideline bases its strong recommendation for naloxegol on moderate-quality data from three studies, including two phase 3, double-blind, randomized, placebo-controlled trials. Although at least five randomized, controlled trials have evaluated methylnaltrexone, the evidence was low quality and therefore the guideline only conditionally recommends prescribing this PAMORA over no treatment.

The guideline also makes no recommendation on the use of the intestinal secretagogue lubiprostone or the 5HT agonist prucalopride. Studies of lubiprostone were limited by possible reporting bias and showed no clear treatment benefit, the authors state. They describe a similar evidence gap for prucalopride, noting that at least one trial ended early without publication of the findings. They recommend further studying lubiprostone as well as prucalopride and other highly selective 5-HT4 agonists for treating OIC. Head-to-head trials would help guide treatment choice for patients with laxative-refractory OIC, they add. “Cost-effectiveness studies are also lacking in this field, which could inform prescribing strategy, particularly for newer, more expensive agents.”

 

For patients with suspected opioid-induced constipation, start by taking a careful history of defecation and dietary patterns, stool consistency, incomplete evacuation, and “alarm symptoms,” such as bloody stools or weight loss, state new guidelines from the American Gastroenterological Association in Gastroenterology.

Hemera/thinkstock

Clinicians also should rule out other causes of constipation, such as pelvic outlet dysfunction, mechanical obstruction, metabolic abnormalities, and comorbidities or concurrent medications, wrote Seth D. Crockett, MD, MPH, of the University of North Carolina at Chapel Hill, together with his associates. The guideline was published online Sept. 1.

Opioid therapy can lead to a range of gastrointestinal symptoms, such as constipation, gastroesophageal reflux, nausea and vomiting, bloating, and abdominal pain. Among these, constipation is by far the most common and debilitating, the guideline notes. In past studies, 40%-80% of patients who received opioids developed opioid-induced constipation (OIC), a more severe presentation that involves a combination of reduced stool frequency in addition to other symptoms, such as harder stools, new or worsening straining during defecation, and a sense of incomplete rectal evacuation.

Treating OIC should start with lifestyle interventions, such as drinking more fluids, toileting as soon as possible when feeling the urge to defecate, and adding regular moderate exercise whenever tolerable, the guideline advises. For patients on oral or parenteral therapy, consider switching to an equianalgesic dose of a less-constipating opioid, such as transdermal fentanyl or oxycodone-naloxone combination therapy.

Many patients with OIC require interventions beyond lifestyle changes or opioid switching. For these patients, the guideline advises starting with conventional laxative therapies based on their safety, low cost, and “established efficacy” in the OIC setting. Options include stool softeners (docusate sodium), osmotic laxatives (polyethylene glycol, magnesium hydroxide, magnesium citrate, and lactulose), lubricants (mineral oil), and stimulant laxatives (bisacodyl, sodium picosulfate, and senna). “Of note, there is little evidence that routine use of stimulant laxatives is harmful to the colon, despite widespread concern to the contrary,” the guideline states. Although randomized, controlled trials have not evaluated particular laxative combinations or titrations for OIC, the best evidence supports stimulant and osmotic laxative therapy, the authors note.

Before deeming any case of OIC laxative refractory, ensure that a patient receives an adequate trial of at least two classes of laxatives administered on a regular schedule, not just “as needed,” the guideline specifies. For example, a patient might receive a 2-week trial of a daily osmotic laxative plus a stimulant laxative two to three times weekly. The guideline authors suggest restricting the use of enemas to rescue therapy. They also note that consuming more fiber tends not to help patients with OIC because fiber does not affect colonic motility.

For truly laxative-refractory OIC, the guidelines recommend escalating treatment to peripherally acting mu-opioid receptor antagonists (PAMORAs). These drugs restore the function of the enteric nervous system by blocking mu-opioid receptors in the gut. Among the PAMORAs, the guideline strongly recommends the use of naldemedine or naloxegol over no treatment, based on robust data from randomized, double-blind, placebo-controlled trials. In the phase 3 COMPOSE 1, 2, and 3 trials, about 52% of patients who received naldemedine achieved at least three spontaneous bowel movements per week, compared with 35% of patients who received placebo. Additionally, in a 52-week safety and efficacy study (COMPOSE 3), naldemedine was associated with one more spontaneous bowel movement per week versus placebo and with a low absolute increase in adverse events.

The guideline bases its strong recommendation for naloxegol on moderate-quality data from three studies, including two phase 3, double-blind, randomized, placebo-controlled trials. Although at least five randomized, controlled trials have evaluated methylnaltrexone, the evidence was low quality and therefore the guideline only conditionally recommends prescribing this PAMORA over no treatment.

The guideline also makes no recommendation on the use of the intestinal secretagogue lubiprostone or the 5HT agonist prucalopride. Studies of lubiprostone were limited by possible reporting bias and showed no clear treatment benefit, the authors state. They describe a similar evidence gap for prucalopride, noting that at least one trial ended early without publication of the findings. They recommend further studying lubiprostone as well as prucalopride and other highly selective 5-HT4 agonists for treating OIC. Head-to-head trials would help guide treatment choice for patients with laxative-refractory OIC, they add. “Cost-effectiveness studies are also lacking in this field, which could inform prescribing strategy, particularly for newer, more expensive agents.”

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Nerve growth factor therapy speeds gastric ulcer healing

Ulcers on NSAIDs
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Nerve growth factor (NGF) therapy in aging rats improves angiogenesis and speeds gastric ulcer healing, which suggests possible applications in human medicine, a recent study found.

Compared with young individuals, elderly people have significantly lower levels of NGF in gastric endothelial cells (GECs), a finding that is associated with impaired angiogenesis and delayed gastric ulcer healing.

“Our previous studies have shown that the gastric mucosa of aging individuals ... has increased susceptibility to injury and delayed healing owing to impaired angiogenesis, but the mechanisms are not fully elucidated,” wrote Amrita Ahluwalia, PhD, of Medical and Research Services at the Veterans Affairs Long Beach (Calif.) Healthcare System and her coauthors.

Mapping the drivers of angiogenesis in the gastric mucosa could lead to treatment options for elderly patients with injured or ulcerated gastric tissue. In prior trials (with rats), “treatment with VEGF [vascular endothelial growth factor] only partly reversed impaired angiogenesis in aging [GECs], indicating an essential role for other factor(s) in addition to VEGF,” the investigators wrote in the September issue of Cellular and Molecular Gastroenterology and Hepatology. They looked to NGF as another possible factor because recent studies had shown it could improve angiogenesis in the brain.

The present study measured NGF expression in rats and humans of varying ages, with NGF treatment and gene therapy performed in rats (in vitro and in vivo).

In vitro angiogenesis was 4.1-fold lower in GECs from aging rats (24 months of age) than it was in GECs from young rats (3 months of age; P less than .001). NGF protein and NGF mRNA levels were also significantly lower in aging GECs than they were with young GECs (NGF protein, 3.0-fold lower; NGF mRNA, 4.2-fold lower; P less than .001).

Treatment of aging rat GECs with exogenous NGF increased angiogenesis by 1.5-fold (P less than .001). Pretreatment with a PI3 kinase inhibitor or an mTOR inhibitor abolished this improvement, suggesting that the PI3 kinase/Akt and mTOR pathways are involved.

When NGF gene therapy was performed in aging GECs, NGF levels rose to the level of that in young GECs, with an accompanying restoration of angiogenesis (threefold increase; P less than .001). Proliferation of aging GECs also increased with gene therapy (P less than .001).

In vivo studies revealed that NGF expression and cell proliferation in aging rat gastric mucosa were lower than in younger rats. Of note, older rats treated with local NGF protein showed increased gastric mucosa angiogenesis and faster ulcer healing, compared with phosphate-buffered saline treatment.

Similar age-related NGF declines were found in humans. When gastric mucosa biopsies were collected from younger individuals (younger than 40 years old; n = 10) and compared with samples from an older population (at least 70 years old; n = 10), the investigators found that NGF expression was 5.5-fold lower in the older people (P less than .001).

“This clearly indicates human relevance of our experimental findings and also can explain impaired angiogenesis and delayed healing of injured gastric mucosa in aging individuals,” the investigators wrote.

“Aging gastropathy and its consequences are clinically critical issues,” the investigators noted, “especially because the aging U.S. population is growing rapidly and it is estimated that, by the year 2030, approximately 70 million Americans will be older than 65 years of age.” Gastric ulcers become more common with age, and individuals 70 years or older have an eightfold increased risk of associated complications, compared with people under 50 years.

The investigators noted that multiple growth factors likely play a role in stimulation of angiogenesis, including NGF, VEGF, epidermal growth factor, and basic fibroblast growth factor. “Further studies are necessary to investigate the role of other growth factors and cytokines in angiogenesis, [gastric ulcer] healing, and their impairment in aging,” the investigators concluded.

The study was funded by the Department of Veterans Affairs Biomedical Laboratory Research and Development Service. The authors declared no conflicts of interest.
 

SOURCE: Ahluwalia A et al. CMGH. 2018 May 17. doi: 10.1016/j.jcmgh.2018.05.003

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Although the incidence of gastric ulcers has been declining in the general population, hospitalization and mortality linked to gastric ulcers remains high in the elderly population. One of the major risk factors for gastric ulceration is the use of NSAIDs. It is estimated that 40% of individuals aged 65 years and older fill at least one prescription for an NSAID each year. Given that the elderly population (those aged 65 years and older) is anticipated to more than double by the year 2050, reaching 84 million, understanding the pathogenesis of gastric ulceration is increasingly relevant.

Dr. Amy Christine Engevik

This study described a new role for nerve growth factor (NGF) in promoting angiogenesis during gastric ulcer repair. The authors observed that aged rats exhibited low NGF levels in gastric endothelial cells that corresponded with impaired ulcer healing of the gastric mucosa following injury. Local NGF treatment to aged rats significantly increased angiogenesis and gastric regeneration. Consistent with their in vivo rat model, analysis of human gastric biopsy specimens showed that individuals more than 70 years of age had decreased expression of NGF in gastric endothelial cells, compared with individuals younger than 40 years.

Ahluwalia and colleagues are the first to demonstrate the role of NGF in aging gastropathy, and their work highlights a key mechanism of angiogenesis during gastric repair that may inform future therapeutic strategies.

Amy Christine Engevik, PhD, is a postdoctoral fellow in the division of surgical sciences at Vanderbilt University Medical Center, Nashville, Tenn. She has no conflicts of interest.

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Although the incidence of gastric ulcers has been declining in the general population, hospitalization and mortality linked to gastric ulcers remains high in the elderly population. One of the major risk factors for gastric ulceration is the use of NSAIDs. It is estimated that 40% of individuals aged 65 years and older fill at least one prescription for an NSAID each year. Given that the elderly population (those aged 65 years and older) is anticipated to more than double by the year 2050, reaching 84 million, understanding the pathogenesis of gastric ulceration is increasingly relevant.

Dr. Amy Christine Engevik

This study described a new role for nerve growth factor (NGF) in promoting angiogenesis during gastric ulcer repair. The authors observed that aged rats exhibited low NGF levels in gastric endothelial cells that corresponded with impaired ulcer healing of the gastric mucosa following injury. Local NGF treatment to aged rats significantly increased angiogenesis and gastric regeneration. Consistent with their in vivo rat model, analysis of human gastric biopsy specimens showed that individuals more than 70 years of age had decreased expression of NGF in gastric endothelial cells, compared with individuals younger than 40 years.

Ahluwalia and colleagues are the first to demonstrate the role of NGF in aging gastropathy, and their work highlights a key mechanism of angiogenesis during gastric repair that may inform future therapeutic strategies.

Amy Christine Engevik, PhD, is a postdoctoral fellow in the division of surgical sciences at Vanderbilt University Medical Center, Nashville, Tenn. She has no conflicts of interest.

Body

Although the incidence of gastric ulcers has been declining in the general population, hospitalization and mortality linked to gastric ulcers remains high in the elderly population. One of the major risk factors for gastric ulceration is the use of NSAIDs. It is estimated that 40% of individuals aged 65 years and older fill at least one prescription for an NSAID each year. Given that the elderly population (those aged 65 years and older) is anticipated to more than double by the year 2050, reaching 84 million, understanding the pathogenesis of gastric ulceration is increasingly relevant.

Dr. Amy Christine Engevik

This study described a new role for nerve growth factor (NGF) in promoting angiogenesis during gastric ulcer repair. The authors observed that aged rats exhibited low NGF levels in gastric endothelial cells that corresponded with impaired ulcer healing of the gastric mucosa following injury. Local NGF treatment to aged rats significantly increased angiogenesis and gastric regeneration. Consistent with their in vivo rat model, analysis of human gastric biopsy specimens showed that individuals more than 70 years of age had decreased expression of NGF in gastric endothelial cells, compared with individuals younger than 40 years.

Ahluwalia and colleagues are the first to demonstrate the role of NGF in aging gastropathy, and their work highlights a key mechanism of angiogenesis during gastric repair that may inform future therapeutic strategies.

Amy Christine Engevik, PhD, is a postdoctoral fellow in the division of surgical sciences at Vanderbilt University Medical Center, Nashville, Tenn. She has no conflicts of interest.

Title
Ulcers on NSAIDs
Ulcers on NSAIDs

Nerve growth factor (NGF) therapy in aging rats improves angiogenesis and speeds gastric ulcer healing, which suggests possible applications in human medicine, a recent study found.

Compared with young individuals, elderly people have significantly lower levels of NGF in gastric endothelial cells (GECs), a finding that is associated with impaired angiogenesis and delayed gastric ulcer healing.

“Our previous studies have shown that the gastric mucosa of aging individuals ... has increased susceptibility to injury and delayed healing owing to impaired angiogenesis, but the mechanisms are not fully elucidated,” wrote Amrita Ahluwalia, PhD, of Medical and Research Services at the Veterans Affairs Long Beach (Calif.) Healthcare System and her coauthors.

Mapping the drivers of angiogenesis in the gastric mucosa could lead to treatment options for elderly patients with injured or ulcerated gastric tissue. In prior trials (with rats), “treatment with VEGF [vascular endothelial growth factor] only partly reversed impaired angiogenesis in aging [GECs], indicating an essential role for other factor(s) in addition to VEGF,” the investigators wrote in the September issue of Cellular and Molecular Gastroenterology and Hepatology. They looked to NGF as another possible factor because recent studies had shown it could improve angiogenesis in the brain.

The present study measured NGF expression in rats and humans of varying ages, with NGF treatment and gene therapy performed in rats (in vitro and in vivo).

In vitro angiogenesis was 4.1-fold lower in GECs from aging rats (24 months of age) than it was in GECs from young rats (3 months of age; P less than .001). NGF protein and NGF mRNA levels were also significantly lower in aging GECs than they were with young GECs (NGF protein, 3.0-fold lower; NGF mRNA, 4.2-fold lower; P less than .001).

Treatment of aging rat GECs with exogenous NGF increased angiogenesis by 1.5-fold (P less than .001). Pretreatment with a PI3 kinase inhibitor or an mTOR inhibitor abolished this improvement, suggesting that the PI3 kinase/Akt and mTOR pathways are involved.

When NGF gene therapy was performed in aging GECs, NGF levels rose to the level of that in young GECs, with an accompanying restoration of angiogenesis (threefold increase; P less than .001). Proliferation of aging GECs also increased with gene therapy (P less than .001).

In vivo studies revealed that NGF expression and cell proliferation in aging rat gastric mucosa were lower than in younger rats. Of note, older rats treated with local NGF protein showed increased gastric mucosa angiogenesis and faster ulcer healing, compared with phosphate-buffered saline treatment.

Similar age-related NGF declines were found in humans. When gastric mucosa biopsies were collected from younger individuals (younger than 40 years old; n = 10) and compared with samples from an older population (at least 70 years old; n = 10), the investigators found that NGF expression was 5.5-fold lower in the older people (P less than .001).

“This clearly indicates human relevance of our experimental findings and also can explain impaired angiogenesis and delayed healing of injured gastric mucosa in aging individuals,” the investigators wrote.

“Aging gastropathy and its consequences are clinically critical issues,” the investigators noted, “especially because the aging U.S. population is growing rapidly and it is estimated that, by the year 2030, approximately 70 million Americans will be older than 65 years of age.” Gastric ulcers become more common with age, and individuals 70 years or older have an eightfold increased risk of associated complications, compared with people under 50 years.

The investigators noted that multiple growth factors likely play a role in stimulation of angiogenesis, including NGF, VEGF, epidermal growth factor, and basic fibroblast growth factor. “Further studies are necessary to investigate the role of other growth factors and cytokines in angiogenesis, [gastric ulcer] healing, and their impairment in aging,” the investigators concluded.

The study was funded by the Department of Veterans Affairs Biomedical Laboratory Research and Development Service. The authors declared no conflicts of interest.
 

SOURCE: Ahluwalia A et al. CMGH. 2018 May 17. doi: 10.1016/j.jcmgh.2018.05.003

Nerve growth factor (NGF) therapy in aging rats improves angiogenesis and speeds gastric ulcer healing, which suggests possible applications in human medicine, a recent study found.

Compared with young individuals, elderly people have significantly lower levels of NGF in gastric endothelial cells (GECs), a finding that is associated with impaired angiogenesis and delayed gastric ulcer healing.

“Our previous studies have shown that the gastric mucosa of aging individuals ... has increased susceptibility to injury and delayed healing owing to impaired angiogenesis, but the mechanisms are not fully elucidated,” wrote Amrita Ahluwalia, PhD, of Medical and Research Services at the Veterans Affairs Long Beach (Calif.) Healthcare System and her coauthors.

Mapping the drivers of angiogenesis in the gastric mucosa could lead to treatment options for elderly patients with injured or ulcerated gastric tissue. In prior trials (with rats), “treatment with VEGF [vascular endothelial growth factor] only partly reversed impaired angiogenesis in aging [GECs], indicating an essential role for other factor(s) in addition to VEGF,” the investigators wrote in the September issue of Cellular and Molecular Gastroenterology and Hepatology. They looked to NGF as another possible factor because recent studies had shown it could improve angiogenesis in the brain.

The present study measured NGF expression in rats and humans of varying ages, with NGF treatment and gene therapy performed in rats (in vitro and in vivo).

In vitro angiogenesis was 4.1-fold lower in GECs from aging rats (24 months of age) than it was in GECs from young rats (3 months of age; P less than .001). NGF protein and NGF mRNA levels were also significantly lower in aging GECs than they were with young GECs (NGF protein, 3.0-fold lower; NGF mRNA, 4.2-fold lower; P less than .001).

Treatment of aging rat GECs with exogenous NGF increased angiogenesis by 1.5-fold (P less than .001). Pretreatment with a PI3 kinase inhibitor or an mTOR inhibitor abolished this improvement, suggesting that the PI3 kinase/Akt and mTOR pathways are involved.

When NGF gene therapy was performed in aging GECs, NGF levels rose to the level of that in young GECs, with an accompanying restoration of angiogenesis (threefold increase; P less than .001). Proliferation of aging GECs also increased with gene therapy (P less than .001).

In vivo studies revealed that NGF expression and cell proliferation in aging rat gastric mucosa were lower than in younger rats. Of note, older rats treated with local NGF protein showed increased gastric mucosa angiogenesis and faster ulcer healing, compared with phosphate-buffered saline treatment.

Similar age-related NGF declines were found in humans. When gastric mucosa biopsies were collected from younger individuals (younger than 40 years old; n = 10) and compared with samples from an older population (at least 70 years old; n = 10), the investigators found that NGF expression was 5.5-fold lower in the older people (P less than .001).

“This clearly indicates human relevance of our experimental findings and also can explain impaired angiogenesis and delayed healing of injured gastric mucosa in aging individuals,” the investigators wrote.

“Aging gastropathy and its consequences are clinically critical issues,” the investigators noted, “especially because the aging U.S. population is growing rapidly and it is estimated that, by the year 2030, approximately 70 million Americans will be older than 65 years of age.” Gastric ulcers become more common with age, and individuals 70 years or older have an eightfold increased risk of associated complications, compared with people under 50 years.

The investigators noted that multiple growth factors likely play a role in stimulation of angiogenesis, including NGF, VEGF, epidermal growth factor, and basic fibroblast growth factor. “Further studies are necessary to investigate the role of other growth factors and cytokines in angiogenesis, [gastric ulcer] healing, and their impairment in aging,” the investigators concluded.

The study was funded by the Department of Veterans Affairs Biomedical Laboratory Research and Development Service. The authors declared no conflicts of interest.
 

SOURCE: Ahluwalia A et al. CMGH. 2018 May 17. doi: 10.1016/j.jcmgh.2018.05.003

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Key clinical point: Nerve growth factor (NGF) therapy in aging rats improves angiogenesis and speeds gastric ulcer (GU) healing, suggesting possible applications in human medicine.

Major finding: Compared with young individuals, elderly people have 5.5-fold lower NGF expression in their gastric mucosa.

Study details: A prospective study involving rats and humans, with NGF therapy performed in rats.

Disclosures: The study was funded by the Department of Veterans Affairs Biomedical Laboratory Research and Development Service. The authors declared no conflicts of interest.

Source: Ahluwalia et al. CMGH. 2018 May 17. doi: 10.1016/j.jcmgh.2018.05.003

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Sunitinib for RCC: Side effects predictable, manageable, and reversible

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A proactive side-effect management strategy enabled many patients with high-risk renal cell carcinoma (RCC) to stay on adjuvant sunitinib therapy in a recent clinical trial, researchers report.

With dose interruptions, dose reductions, and supportive medical therapy, adverse events on adjuvant sunitinib were predictable, manageable, and reversible, according to their report on the S-TRAC (Sunitinib as Adjuvant Treatment for High-Risk Renal Cell Carcinoma Following Nephrectomy) trial.

Patients did report reduced health-related quality of life, but with the exception of diarrhea and loss of appetite, those changes were generally not clinically significant, the investigators wrote. The report is in Annals of Oncology.

The safety profile for sunitinib was acceptable in adjuvant RCC treatment in S-TRAC, with no safety signals observed, said Michael Staehler, MD, PhD, department of urology, Ludwig Maximilian University of Munich, and his coauthors.

“It is likely proactive management contributed to preservation of global health status and quality of life, and alleviation of treatment-related symptoms, thereby enabling patients to remain on effective adjuvant therapy,” Dr. Staehler and his coauthors said.

Sunitinib is approved by the Food and Drug Administration for adjuvant treatment of patients at high risk of recurrent RCC after nephrectomy. That was based in part on previously reported results of the phase 3 S-TRAC study, which showed a 24% reduction in risk of a disease-free survival event versus placebo.

For the 306 patients randomized to sunitinib, 71% stayed on treatment for at least 8 months, reaching cycle 6 of therapy, while 56% finished the full year of treatment, Dr. Staehler and his coauthors said in this new report on S-TRAC focused on adverse events and patient-reported outcomes.

The most common adverse events in the sunitinib arm of S-TRAC included diarrhea in 56.9%, versus 21.4% in the placebo arm, palmar-plantar erythrodysesthesia (PPE) in 50.3% versus 10.2% for placebo, and hypertension in 36.9% versus 11.8% for placebo. The frequency of serious adverse events was similar between arms, according to the investigators, at 21.9% for sunitinib and 17.1% for placebo.

Adverse events were the most common reason for dose reduction, cited in 34.6% of cases, and for dose interruption, reported in 46.4%, they said.

Treatment discontinuations due to adverse events occurred in 28.1%, usually because of PPE.

The S-TRAC study investigators used the EORTC QLQ-C30 instrument to evaluate patient experience during treatment.

That evaluation included an analysis of global health status/quality of life score that favored placebo, with a mean difference in the overall means of –4.76. Although statistically significant (P greater than or equal to .0001), the point estimate of the difference was below the commonly accepted threshold that would indicate clinically meaningful deterioration, investigators said.

Similar patterns that were statistically significant but not clinically meaningful were seen for symptoms including fatigue and pain. However, patient-reported scores for diarrhea and loss of appetite did reach the level of a clinically meaningful difference.

But only one patient permanently discontinued sunitinib because of diarrhea, and none permanently discontinued because of loss of appetite, Dr. Staehler and his coauthors noted.

The work was sponsored by Pfizer. Dr. Staehler reported honoraria, consulting fees, and research grants from Pfizer, Bayer, GSK, Roche, BMS, Novartis, Exelixis, and AVEO. Coauthors reported disclosures related to Merck, Sanofi, Astellas, Celldex, Acerta, Janssen, and others.

SOURCE: Staehler M et al. Ann Oncol. 2018 Aug 23. doi: 10.1093/annonc/mdy329.

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A proactive side-effect management strategy enabled many patients with high-risk renal cell carcinoma (RCC) to stay on adjuvant sunitinib therapy in a recent clinical trial, researchers report.

With dose interruptions, dose reductions, and supportive medical therapy, adverse events on adjuvant sunitinib were predictable, manageable, and reversible, according to their report on the S-TRAC (Sunitinib as Adjuvant Treatment for High-Risk Renal Cell Carcinoma Following Nephrectomy) trial.

Patients did report reduced health-related quality of life, but with the exception of diarrhea and loss of appetite, those changes were generally not clinically significant, the investigators wrote. The report is in Annals of Oncology.

The safety profile for sunitinib was acceptable in adjuvant RCC treatment in S-TRAC, with no safety signals observed, said Michael Staehler, MD, PhD, department of urology, Ludwig Maximilian University of Munich, and his coauthors.

“It is likely proactive management contributed to preservation of global health status and quality of life, and alleviation of treatment-related symptoms, thereby enabling patients to remain on effective adjuvant therapy,” Dr. Staehler and his coauthors said.

Sunitinib is approved by the Food and Drug Administration for adjuvant treatment of patients at high risk of recurrent RCC after nephrectomy. That was based in part on previously reported results of the phase 3 S-TRAC study, which showed a 24% reduction in risk of a disease-free survival event versus placebo.

For the 306 patients randomized to sunitinib, 71% stayed on treatment for at least 8 months, reaching cycle 6 of therapy, while 56% finished the full year of treatment, Dr. Staehler and his coauthors said in this new report on S-TRAC focused on adverse events and patient-reported outcomes.

The most common adverse events in the sunitinib arm of S-TRAC included diarrhea in 56.9%, versus 21.4% in the placebo arm, palmar-plantar erythrodysesthesia (PPE) in 50.3% versus 10.2% for placebo, and hypertension in 36.9% versus 11.8% for placebo. The frequency of serious adverse events was similar between arms, according to the investigators, at 21.9% for sunitinib and 17.1% for placebo.

Adverse events were the most common reason for dose reduction, cited in 34.6% of cases, and for dose interruption, reported in 46.4%, they said.

Treatment discontinuations due to adverse events occurred in 28.1%, usually because of PPE.

The S-TRAC study investigators used the EORTC QLQ-C30 instrument to evaluate patient experience during treatment.

That evaluation included an analysis of global health status/quality of life score that favored placebo, with a mean difference in the overall means of –4.76. Although statistically significant (P greater than or equal to .0001), the point estimate of the difference was below the commonly accepted threshold that would indicate clinically meaningful deterioration, investigators said.

Similar patterns that were statistically significant but not clinically meaningful were seen for symptoms including fatigue and pain. However, patient-reported scores for diarrhea and loss of appetite did reach the level of a clinically meaningful difference.

But only one patient permanently discontinued sunitinib because of diarrhea, and none permanently discontinued because of loss of appetite, Dr. Staehler and his coauthors noted.

The work was sponsored by Pfizer. Dr. Staehler reported honoraria, consulting fees, and research grants from Pfizer, Bayer, GSK, Roche, BMS, Novartis, Exelixis, and AVEO. Coauthors reported disclosures related to Merck, Sanofi, Astellas, Celldex, Acerta, Janssen, and others.

SOURCE: Staehler M et al. Ann Oncol. 2018 Aug 23. doi: 10.1093/annonc/mdy329.

A proactive side-effect management strategy enabled many patients with high-risk renal cell carcinoma (RCC) to stay on adjuvant sunitinib therapy in a recent clinical trial, researchers report.

With dose interruptions, dose reductions, and supportive medical therapy, adverse events on adjuvant sunitinib were predictable, manageable, and reversible, according to their report on the S-TRAC (Sunitinib as Adjuvant Treatment for High-Risk Renal Cell Carcinoma Following Nephrectomy) trial.

Patients did report reduced health-related quality of life, but with the exception of diarrhea and loss of appetite, those changes were generally not clinically significant, the investigators wrote. The report is in Annals of Oncology.

The safety profile for sunitinib was acceptable in adjuvant RCC treatment in S-TRAC, with no safety signals observed, said Michael Staehler, MD, PhD, department of urology, Ludwig Maximilian University of Munich, and his coauthors.

“It is likely proactive management contributed to preservation of global health status and quality of life, and alleviation of treatment-related symptoms, thereby enabling patients to remain on effective adjuvant therapy,” Dr. Staehler and his coauthors said.

Sunitinib is approved by the Food and Drug Administration for adjuvant treatment of patients at high risk of recurrent RCC after nephrectomy. That was based in part on previously reported results of the phase 3 S-TRAC study, which showed a 24% reduction in risk of a disease-free survival event versus placebo.

For the 306 patients randomized to sunitinib, 71% stayed on treatment for at least 8 months, reaching cycle 6 of therapy, while 56% finished the full year of treatment, Dr. Staehler and his coauthors said in this new report on S-TRAC focused on adverse events and patient-reported outcomes.

The most common adverse events in the sunitinib arm of S-TRAC included diarrhea in 56.9%, versus 21.4% in the placebo arm, palmar-plantar erythrodysesthesia (PPE) in 50.3% versus 10.2% for placebo, and hypertension in 36.9% versus 11.8% for placebo. The frequency of serious adverse events was similar between arms, according to the investigators, at 21.9% for sunitinib and 17.1% for placebo.

Adverse events were the most common reason for dose reduction, cited in 34.6% of cases, and for dose interruption, reported in 46.4%, they said.

Treatment discontinuations due to adverse events occurred in 28.1%, usually because of PPE.

The S-TRAC study investigators used the EORTC QLQ-C30 instrument to evaluate patient experience during treatment.

That evaluation included an analysis of global health status/quality of life score that favored placebo, with a mean difference in the overall means of –4.76. Although statistically significant (P greater than or equal to .0001), the point estimate of the difference was below the commonly accepted threshold that would indicate clinically meaningful deterioration, investigators said.

Similar patterns that were statistically significant but not clinically meaningful were seen for symptoms including fatigue and pain. However, patient-reported scores for diarrhea and loss of appetite did reach the level of a clinically meaningful difference.

But only one patient permanently discontinued sunitinib because of diarrhea, and none permanently discontinued because of loss of appetite, Dr. Staehler and his coauthors noted.

The work was sponsored by Pfizer. Dr. Staehler reported honoraria, consulting fees, and research grants from Pfizer, Bayer, GSK, Roche, BMS, Novartis, Exelixis, and AVEO. Coauthors reported disclosures related to Merck, Sanofi, Astellas, Celldex, Acerta, Janssen, and others.

SOURCE: Staehler M et al. Ann Oncol. 2018 Aug 23. doi: 10.1093/annonc/mdy329.

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Key clinical point: Adverse events on adjuvant sunitinib were predictable, manageable, and reversible, while decreases in health-related quality of life were not clinically meaningful except for those related to diarrhea and loss of appetite.

Major finding: The EORTC QLQ-C30 global health status/quality of life score favored placebo, with a mean difference in the overall means of –4.76 (P greater than or equal to .0001) that did not exceed the threshold that would indicate clinically meaningful deterioration.

Study details: Analysis of adverse events and patient-reported outcomes for 306 patients treated with sunitinib in the S-TRAC (Sunitinib as Adjuvant Treatment for High-Risk Renal Cell Carcinoma Following Nephrectomy) trial.

Disclosures: Pfizer sponsored the study. The authors reported disclosures related to Pfizer, Bayer, GSK, Roche, BMS, Novartis, Exelixis, AVEO, Merck, Sanofi, Astellas, Celldex, Acerta, Janssen, and others.

Source: Staehler M et al. Ann Oncol. 2018 Aug 23. doi: 10.1093/annonc/mdy329.

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FDA approves two once-daily HIV drugs

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Two once-daily oral HIV-1 medicines have been approved by the Food and Drug Administration, according to Merck: Delstrigo, a fixed-dose combination tablet of doravirine (100 mg), lamivudine (300 mg), and tenofovir disoproxil fumarate (300 mg), and Pifeltro (doravirine, 100 mg). Both drugs are indicated for treating HIV-1 infection in adult patients with no prior antiretroviral treatment.

Pifeltro is a nonnucleoside reverse transcriptase inhibitor to be used in combination with other antiretroviral medicines. Delstrigo contains a boxed warning regarding posttreatment acute exacerbation of hepatitis B infection.

Delstrigo and Pifeltro are not curative, according to the announcement by Merck, which manufactures both drugs.

The FDA approval of Delstrigo was based on findings from the DRIVE-AHEAD trial (NCT02403674), which randomized 728 participants with no history of antiretroviral treatment to receive once daily either Delstrigo or efavirenz/emtricitabine/tenofovir disoproxil fumarate (EFV 600 mg/FTC 200 mg/TDF 300 mg). Delstrigo was associated with sustained viral suppression through 48 weeks, meeting its primary endpoint of noninferior efficacy when compared with EFV/FTC/TDF (84% vs. 81%, respectively), according to Merck.

Pifeltro was approved based on the results of the DRIVE-FORWARD trial (NCT02275780), which randomized 766 participants with no history of antiretroviral treatment to receive either Pifeltro once daily or darunavir 800 mg plus ritonavir 100 mg (DRV+r) once daily, each in combination with either emtricitabine (FTC)/TDF or abacavir (ABC)/lamivudine (3TC), as selected by the investigator. Pifeltro was associated with sustained viral suppression through 48 weeks, meeting its primary endpoint of noninferior efficacy when compared with DRV+r, each in combination with FTC/TDF or ABC/3TC (84% vs. 80%, respectively), according to the Merck announcement.

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Two once-daily oral HIV-1 medicines have been approved by the Food and Drug Administration, according to Merck: Delstrigo, a fixed-dose combination tablet of doravirine (100 mg), lamivudine (300 mg), and tenofovir disoproxil fumarate (300 mg), and Pifeltro (doravirine, 100 mg). Both drugs are indicated for treating HIV-1 infection in adult patients with no prior antiretroviral treatment.

Pifeltro is a nonnucleoside reverse transcriptase inhibitor to be used in combination with other antiretroviral medicines. Delstrigo contains a boxed warning regarding posttreatment acute exacerbation of hepatitis B infection.

Delstrigo and Pifeltro are not curative, according to the announcement by Merck, which manufactures both drugs.

The FDA approval of Delstrigo was based on findings from the DRIVE-AHEAD trial (NCT02403674), which randomized 728 participants with no history of antiretroviral treatment to receive once daily either Delstrigo or efavirenz/emtricitabine/tenofovir disoproxil fumarate (EFV 600 mg/FTC 200 mg/TDF 300 mg). Delstrigo was associated with sustained viral suppression through 48 weeks, meeting its primary endpoint of noninferior efficacy when compared with EFV/FTC/TDF (84% vs. 81%, respectively), according to Merck.

Pifeltro was approved based on the results of the DRIVE-FORWARD trial (NCT02275780), which randomized 766 participants with no history of antiretroviral treatment to receive either Pifeltro once daily or darunavir 800 mg plus ritonavir 100 mg (DRV+r) once daily, each in combination with either emtricitabine (FTC)/TDF or abacavir (ABC)/lamivudine (3TC), as selected by the investigator. Pifeltro was associated with sustained viral suppression through 48 weeks, meeting its primary endpoint of noninferior efficacy when compared with DRV+r, each in combination with FTC/TDF or ABC/3TC (84% vs. 80%, respectively), according to the Merck announcement.

Two once-daily oral HIV-1 medicines have been approved by the Food and Drug Administration, according to Merck: Delstrigo, a fixed-dose combination tablet of doravirine (100 mg), lamivudine (300 mg), and tenofovir disoproxil fumarate (300 mg), and Pifeltro (doravirine, 100 mg). Both drugs are indicated for treating HIV-1 infection in adult patients with no prior antiretroviral treatment.

Pifeltro is a nonnucleoside reverse transcriptase inhibitor to be used in combination with other antiretroviral medicines. Delstrigo contains a boxed warning regarding posttreatment acute exacerbation of hepatitis B infection.

Delstrigo and Pifeltro are not curative, according to the announcement by Merck, which manufactures both drugs.

The FDA approval of Delstrigo was based on findings from the DRIVE-AHEAD trial (NCT02403674), which randomized 728 participants with no history of antiretroviral treatment to receive once daily either Delstrigo or efavirenz/emtricitabine/tenofovir disoproxil fumarate (EFV 600 mg/FTC 200 mg/TDF 300 mg). Delstrigo was associated with sustained viral suppression through 48 weeks, meeting its primary endpoint of noninferior efficacy when compared with EFV/FTC/TDF (84% vs. 81%, respectively), according to Merck.

Pifeltro was approved based on the results of the DRIVE-FORWARD trial (NCT02275780), which randomized 766 participants with no history of antiretroviral treatment to receive either Pifeltro once daily or darunavir 800 mg plus ritonavir 100 mg (DRV+r) once daily, each in combination with either emtricitabine (FTC)/TDF or abacavir (ABC)/lamivudine (3TC), as selected by the investigator. Pifeltro was associated with sustained viral suppression through 48 weeks, meeting its primary endpoint of noninferior efficacy when compared with DRV+r, each in combination with FTC/TDF or ABC/3TC (84% vs. 80%, respectively), according to the Merck announcement.

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Dose-dense MVAC credited with better bladder cancer survival

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In patients with muscle-invasive bladder cancer, a dose-dense neoadjuvant chemotherapy regimen followed by cystectomy was associated with a higher rate of complete responses, compared with standard gemcitabine-platinum neoadjuvant chemotherapy and cystectomy, results of a retrospective analysis indicate.

Among 1,113 patients who underwent neoadjuvant chemotherapy (NAC) and cystectomy, a regimen of dose-dense methotrexate, vinblastine, doxorubicin, and cisplatin (ddMVAC) was associated with a nearly threefold greater likelihood that patients would have a complete response, compared with gemcitabine and cisplatin, reported Scott M. Gilbert, MD, of the H. Lee Moffitt Cancer Center and Research Institute in Tampa, Florida, and colleagues.

“We also found that ddMVAC was associated with longer survival intervals and a lower risk of death than the other treatments examined, although those findings did not reach statistical significance, indicating that larger comparative studies are needed to definitively answer questions regarding survival,” they wrote in JAMA Oncology.

The investigators noted that, despite clear evidence of a survival benefit associated with neoadjuvant chemotherapy followed by cystectomy, compared with cystectomy alone in patients with muscle-invasive bladder cancer, “the rates of adoption and routine use of NAC have been modest.”

Gemcitabine and cisplatin have become the de facto standard of care because of favorable toxicity profile and response rates comparable to those seen with ddMVAC. Yet there are few studies comparing disease control and survival outcomes for different neoadjuvant chemotherapy regimens, they noted, which prompted the current study.

The investigators conducted a cross-sectional analysis of data on 1,113 patients with bladder cancer treated with cystectomy at their center from January 2007 through May 2017. They compared rates of downstaging, complete responses, and overall survival with ddMVAC, compared with gemcitabine combined with either cisplatin or carboplatin, other neoadjuvant combinations (including etoposide- fluorouracil- and paclitaxel-based regimens) or no neoadjuvant chemotherapy.

Of the 1,113 patients, 824 had disease stage T2 or greater, and of this group, 332 had received neoadjuvant chemotherapy.

They found that ddMVAC was associated with a 52.2% downstaging rate, compared with 41.3% for gemcitabine-cisplatin, and 27% for gemcitabine-carboplatin. Respective pathologic complete response rates were 41.3%, 24.5%, and 9.4% (P less than .001).

Downstaging rates for patients treated with other regimens and patients who did not receive neoadjuvant chemotherapy were 42% and 25.7%, respectively. Complete response rates (downstaging to pT0N0) were 24% and 10.7%.

In a multivariable logistic regression model controlling for age, comorbidities, sex, clinical stage, and chemotherapy regimen, ddMVAC was associated with a significantly higher likelihood of pathologic complete response, with an odds ratio of 2.67 (P less than .001). Similarly, a propensity-score model weighted for clinical and demographic characteristics showed an OR for complete response with ddMVAC of 1.52 (P = .05).

The 2-year Kaplan-Meier survival probability estimate for ddMVAC was 73.3%, compared with 62% for gemcitabine-cisplatin and 34.8% for gemcitabine-carboplatin (P = .002).

Regardless of chemotherapy type, a complete pathologic response was a significant predictor for overall survival (P less than .001).

Although ddMVAC showed a trend toward better overall survival in both logistic regression and propensity score models, neither reached statistical significance.

The authors did not report survival results for patients who did not receive neoadjuvant chemotherapy.

The investigators acknowledged that the study is limited by its nonrandomized design and the relatively small sample of patients treated with ddMVAC (46 patients).

The study was supported in part by a National Cancer Institute grant to the H. Lee Moffitt Cancer Center. The authors reported having no conflicts of interest.

SOURCE: Peyton CC et al. JAMA Oncology. 2018 Aug 30. doi: 10.1001/jamaoncol.2018.3542.
 

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In patients with muscle-invasive bladder cancer, a dose-dense neoadjuvant chemotherapy regimen followed by cystectomy was associated with a higher rate of complete responses, compared with standard gemcitabine-platinum neoadjuvant chemotherapy and cystectomy, results of a retrospective analysis indicate.

Among 1,113 patients who underwent neoadjuvant chemotherapy (NAC) and cystectomy, a regimen of dose-dense methotrexate, vinblastine, doxorubicin, and cisplatin (ddMVAC) was associated with a nearly threefold greater likelihood that patients would have a complete response, compared with gemcitabine and cisplatin, reported Scott M. Gilbert, MD, of the H. Lee Moffitt Cancer Center and Research Institute in Tampa, Florida, and colleagues.

“We also found that ddMVAC was associated with longer survival intervals and a lower risk of death than the other treatments examined, although those findings did not reach statistical significance, indicating that larger comparative studies are needed to definitively answer questions regarding survival,” they wrote in JAMA Oncology.

The investigators noted that, despite clear evidence of a survival benefit associated with neoadjuvant chemotherapy followed by cystectomy, compared with cystectomy alone in patients with muscle-invasive bladder cancer, “the rates of adoption and routine use of NAC have been modest.”

Gemcitabine and cisplatin have become the de facto standard of care because of favorable toxicity profile and response rates comparable to those seen with ddMVAC. Yet there are few studies comparing disease control and survival outcomes for different neoadjuvant chemotherapy regimens, they noted, which prompted the current study.

The investigators conducted a cross-sectional analysis of data on 1,113 patients with bladder cancer treated with cystectomy at their center from January 2007 through May 2017. They compared rates of downstaging, complete responses, and overall survival with ddMVAC, compared with gemcitabine combined with either cisplatin or carboplatin, other neoadjuvant combinations (including etoposide- fluorouracil- and paclitaxel-based regimens) or no neoadjuvant chemotherapy.

Of the 1,113 patients, 824 had disease stage T2 or greater, and of this group, 332 had received neoadjuvant chemotherapy.

They found that ddMVAC was associated with a 52.2% downstaging rate, compared with 41.3% for gemcitabine-cisplatin, and 27% for gemcitabine-carboplatin. Respective pathologic complete response rates were 41.3%, 24.5%, and 9.4% (P less than .001).

Downstaging rates for patients treated with other regimens and patients who did not receive neoadjuvant chemotherapy were 42% and 25.7%, respectively. Complete response rates (downstaging to pT0N0) were 24% and 10.7%.

In a multivariable logistic regression model controlling for age, comorbidities, sex, clinical stage, and chemotherapy regimen, ddMVAC was associated with a significantly higher likelihood of pathologic complete response, with an odds ratio of 2.67 (P less than .001). Similarly, a propensity-score model weighted for clinical and demographic characteristics showed an OR for complete response with ddMVAC of 1.52 (P = .05).

The 2-year Kaplan-Meier survival probability estimate for ddMVAC was 73.3%, compared with 62% for gemcitabine-cisplatin and 34.8% for gemcitabine-carboplatin (P = .002).

Regardless of chemotherapy type, a complete pathologic response was a significant predictor for overall survival (P less than .001).

Although ddMVAC showed a trend toward better overall survival in both logistic regression and propensity score models, neither reached statistical significance.

The authors did not report survival results for patients who did not receive neoadjuvant chemotherapy.

The investigators acknowledged that the study is limited by its nonrandomized design and the relatively small sample of patients treated with ddMVAC (46 patients).

The study was supported in part by a National Cancer Institute grant to the H. Lee Moffitt Cancer Center. The authors reported having no conflicts of interest.

SOURCE: Peyton CC et al. JAMA Oncology. 2018 Aug 30. doi: 10.1001/jamaoncol.2018.3542.
 

In patients with muscle-invasive bladder cancer, a dose-dense neoadjuvant chemotherapy regimen followed by cystectomy was associated with a higher rate of complete responses, compared with standard gemcitabine-platinum neoadjuvant chemotherapy and cystectomy, results of a retrospective analysis indicate.

Among 1,113 patients who underwent neoadjuvant chemotherapy (NAC) and cystectomy, a regimen of dose-dense methotrexate, vinblastine, doxorubicin, and cisplatin (ddMVAC) was associated with a nearly threefold greater likelihood that patients would have a complete response, compared with gemcitabine and cisplatin, reported Scott M. Gilbert, MD, of the H. Lee Moffitt Cancer Center and Research Institute in Tampa, Florida, and colleagues.

“We also found that ddMVAC was associated with longer survival intervals and a lower risk of death than the other treatments examined, although those findings did not reach statistical significance, indicating that larger comparative studies are needed to definitively answer questions regarding survival,” they wrote in JAMA Oncology.

The investigators noted that, despite clear evidence of a survival benefit associated with neoadjuvant chemotherapy followed by cystectomy, compared with cystectomy alone in patients with muscle-invasive bladder cancer, “the rates of adoption and routine use of NAC have been modest.”

Gemcitabine and cisplatin have become the de facto standard of care because of favorable toxicity profile and response rates comparable to those seen with ddMVAC. Yet there are few studies comparing disease control and survival outcomes for different neoadjuvant chemotherapy regimens, they noted, which prompted the current study.

The investigators conducted a cross-sectional analysis of data on 1,113 patients with bladder cancer treated with cystectomy at their center from January 2007 through May 2017. They compared rates of downstaging, complete responses, and overall survival with ddMVAC, compared with gemcitabine combined with either cisplatin or carboplatin, other neoadjuvant combinations (including etoposide- fluorouracil- and paclitaxel-based regimens) or no neoadjuvant chemotherapy.

Of the 1,113 patients, 824 had disease stage T2 or greater, and of this group, 332 had received neoadjuvant chemotherapy.

They found that ddMVAC was associated with a 52.2% downstaging rate, compared with 41.3% for gemcitabine-cisplatin, and 27% for gemcitabine-carboplatin. Respective pathologic complete response rates were 41.3%, 24.5%, and 9.4% (P less than .001).

Downstaging rates for patients treated with other regimens and patients who did not receive neoadjuvant chemotherapy were 42% and 25.7%, respectively. Complete response rates (downstaging to pT0N0) were 24% and 10.7%.

In a multivariable logistic regression model controlling for age, comorbidities, sex, clinical stage, and chemotherapy regimen, ddMVAC was associated with a significantly higher likelihood of pathologic complete response, with an odds ratio of 2.67 (P less than .001). Similarly, a propensity-score model weighted for clinical and demographic characteristics showed an OR for complete response with ddMVAC of 1.52 (P = .05).

The 2-year Kaplan-Meier survival probability estimate for ddMVAC was 73.3%, compared with 62% for gemcitabine-cisplatin and 34.8% for gemcitabine-carboplatin (P = .002).

Regardless of chemotherapy type, a complete pathologic response was a significant predictor for overall survival (P less than .001).

Although ddMVAC showed a trend toward better overall survival in both logistic regression and propensity score models, neither reached statistical significance.

The authors did not report survival results for patients who did not receive neoadjuvant chemotherapy.

The investigators acknowledged that the study is limited by its nonrandomized design and the relatively small sample of patients treated with ddMVAC (46 patients).

The study was supported in part by a National Cancer Institute grant to the H. Lee Moffitt Cancer Center. The authors reported having no conflicts of interest.

SOURCE: Peyton CC et al. JAMA Oncology. 2018 Aug 30. doi: 10.1001/jamaoncol.2018.3542.
 

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Key clinical point: Neoadjuvant chemotherapy with dose-dense methotrexate, vinblastine, doxorubicin and cisplatin (ddMVAC) is associated with improved response and survival rates, compared with gemcitabine-based regimens.

Major finding: 2-year survival probability with ddMVAC was 73.3% vs. 62% for gemcitabine-cisplatin and 34.8% for gemcitabine-carboplatin (P = .002).

Study details: Retrospective cross-sectional analysis of data on 1,113 patients with muscle-invasive bladder cancer.

Disclosures: The study was supported in part by a National Cancer Institute grant to the H. Lee Moffitt Cancer Center. The authors reported having no conflicts of interest.

Source: Peyton CC et al. JAMA Oncology. 2018 Aug 30. doi: 10.1001/jamaoncol.2018.3542.

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Sometimes talk is useless

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“Alex, I understand that you are upset that you left your little bulldozer at home. Let’s try to think of something else you can play with here at the restaurant that is kind of like a bulldozer.”

Ambernectar 13/CC BY-ND 2.0

Sounds like a reasonable strategy to calm an unruly preschooler, and it might have been had it not been the fifth attempt in a 45-minute dialogue between a mother and her overtired, misbehaving 3-year-old. There had been a lot of “I understand how you feel” and “use your words” woven into a gag-worthy and futile effort to forge a collaborative parent-child solution to the problem of an exhausted preschooler who is up past his bedtime in a public place.

My wife and I enjoy a night out with friends and prefer a quiet dining atmosphere. However, some evenings we eat earlier and choose a restaurant we know appeals to families with young children. At those meals, we anticipate being serenaded by a loud background buzz punctuated by the occasional shriek or short bout of crying. We expect a degree of childish behavior to come with the territory, and watching the dramas unfold brings back fond “been there, done that” memories. But, listening to those behaviors being horribly mismanaged can ruin even the most tolerant adult’s appetite in less time than it takes a parent to say, “I can see you’re unhappy, and we need to talk about why.”

In an op-ed piece, a psychotherapist asks the legitimate question, and provides the correct quick answer (“Which Is Better, Rewards or Punishments? Neither,” New York Times, Aug. 21, 2018). I couldn’t agree more. In my experience, rewards have a very short half-life and can become disastrously inflationary in the blink of an eye. On the other hand, punishments can be either too heavy-handed or so irrational that the child fails to make a logical connection between his misbehavior and his sentence.

Unfortunately, many child behavior advisers, including the op-ed author, offer alternatives to rewards and punishment that are unworkable in real-world circumstances, such as the restaurant scenario my wife and I endured.

Dr. William G. Wilkoff

While it sounds very democratic to ask a 3-year-old why he is misbehaving, more often than not it should be the parent who is asking what he or she could have done differently to avoid the situation. It is likely the child has been allowed to become overtired and/or the parent may be in denial about his/her child’s intolerance for stimulating environments.

Too often the parent takes too long to realize that the water is spilling over the dam and it is time to head for shore. Children who are overtired and having a tantrum can’t participate in a rational discussion about their feelings. If that dialogue needs to happen, and that is seldom, it should be the next day after the parent has time to consider his or her own mistakes.

When it comes to managing misbehaving children, I prefer well-tailored consequences and my favorite is a humanely crafted time-out. When presented and executed properly, a time-out can break the cycle of misbehavior and give both parent and child a chance to reconsider their positions.

But at 7 p.m. on a Friday evening in a busy restaurant, neither a time-out nor philosophizing with a 3-year-old is going to work. It’s time to ask for the check and head home to bed.

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Email him at pdnews@mdedge.com.

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“Alex, I understand that you are upset that you left your little bulldozer at home. Let’s try to think of something else you can play with here at the restaurant that is kind of like a bulldozer.”

Ambernectar 13/CC BY-ND 2.0

Sounds like a reasonable strategy to calm an unruly preschooler, and it might have been had it not been the fifth attempt in a 45-minute dialogue between a mother and her overtired, misbehaving 3-year-old. There had been a lot of “I understand how you feel” and “use your words” woven into a gag-worthy and futile effort to forge a collaborative parent-child solution to the problem of an exhausted preschooler who is up past his bedtime in a public place.

My wife and I enjoy a night out with friends and prefer a quiet dining atmosphere. However, some evenings we eat earlier and choose a restaurant we know appeals to families with young children. At those meals, we anticipate being serenaded by a loud background buzz punctuated by the occasional shriek or short bout of crying. We expect a degree of childish behavior to come with the territory, and watching the dramas unfold brings back fond “been there, done that” memories. But, listening to those behaviors being horribly mismanaged can ruin even the most tolerant adult’s appetite in less time than it takes a parent to say, “I can see you’re unhappy, and we need to talk about why.”

In an op-ed piece, a psychotherapist asks the legitimate question, and provides the correct quick answer (“Which Is Better, Rewards or Punishments? Neither,” New York Times, Aug. 21, 2018). I couldn’t agree more. In my experience, rewards have a very short half-life and can become disastrously inflationary in the blink of an eye. On the other hand, punishments can be either too heavy-handed or so irrational that the child fails to make a logical connection between his misbehavior and his sentence.

Unfortunately, many child behavior advisers, including the op-ed author, offer alternatives to rewards and punishment that are unworkable in real-world circumstances, such as the restaurant scenario my wife and I endured.

Dr. William G. Wilkoff

While it sounds very democratic to ask a 3-year-old why he is misbehaving, more often than not it should be the parent who is asking what he or she could have done differently to avoid the situation. It is likely the child has been allowed to become overtired and/or the parent may be in denial about his/her child’s intolerance for stimulating environments.

Too often the parent takes too long to realize that the water is spilling over the dam and it is time to head for shore. Children who are overtired and having a tantrum can’t participate in a rational discussion about their feelings. If that dialogue needs to happen, and that is seldom, it should be the next day after the parent has time to consider his or her own mistakes.

When it comes to managing misbehaving children, I prefer well-tailored consequences and my favorite is a humanely crafted time-out. When presented and executed properly, a time-out can break the cycle of misbehavior and give both parent and child a chance to reconsider their positions.

But at 7 p.m. on a Friday evening in a busy restaurant, neither a time-out nor philosophizing with a 3-year-old is going to work. It’s time to ask for the check and head home to bed.

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Email him at pdnews@mdedge.com.

“Alex, I understand that you are upset that you left your little bulldozer at home. Let’s try to think of something else you can play with here at the restaurant that is kind of like a bulldozer.”

Ambernectar 13/CC BY-ND 2.0

Sounds like a reasonable strategy to calm an unruly preschooler, and it might have been had it not been the fifth attempt in a 45-minute dialogue between a mother and her overtired, misbehaving 3-year-old. There had been a lot of “I understand how you feel” and “use your words” woven into a gag-worthy and futile effort to forge a collaborative parent-child solution to the problem of an exhausted preschooler who is up past his bedtime in a public place.

My wife and I enjoy a night out with friends and prefer a quiet dining atmosphere. However, some evenings we eat earlier and choose a restaurant we know appeals to families with young children. At those meals, we anticipate being serenaded by a loud background buzz punctuated by the occasional shriek or short bout of crying. We expect a degree of childish behavior to come with the territory, and watching the dramas unfold brings back fond “been there, done that” memories. But, listening to those behaviors being horribly mismanaged can ruin even the most tolerant adult’s appetite in less time than it takes a parent to say, “I can see you’re unhappy, and we need to talk about why.”

In an op-ed piece, a psychotherapist asks the legitimate question, and provides the correct quick answer (“Which Is Better, Rewards or Punishments? Neither,” New York Times, Aug. 21, 2018). I couldn’t agree more. In my experience, rewards have a very short half-life and can become disastrously inflationary in the blink of an eye. On the other hand, punishments can be either too heavy-handed or so irrational that the child fails to make a logical connection between his misbehavior and his sentence.

Unfortunately, many child behavior advisers, including the op-ed author, offer alternatives to rewards and punishment that are unworkable in real-world circumstances, such as the restaurant scenario my wife and I endured.

Dr. William G. Wilkoff

While it sounds very democratic to ask a 3-year-old why he is misbehaving, more often than not it should be the parent who is asking what he or she could have done differently to avoid the situation. It is likely the child has been allowed to become overtired and/or the parent may be in denial about his/her child’s intolerance for stimulating environments.

Too often the parent takes too long to realize that the water is spilling over the dam and it is time to head for shore. Children who are overtired and having a tantrum can’t participate in a rational discussion about their feelings. If that dialogue needs to happen, and that is seldom, it should be the next day after the parent has time to consider his or her own mistakes.

When it comes to managing misbehaving children, I prefer well-tailored consequences and my favorite is a humanely crafted time-out. When presented and executed properly, a time-out can break the cycle of misbehavior and give both parent and child a chance to reconsider their positions.

But at 7 p.m. on a Friday evening in a busy restaurant, neither a time-out nor philosophizing with a 3-year-old is going to work. It’s time to ask for the check and head home to bed.

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Email him at pdnews@mdedge.com.

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Case Series Evaluating the Operative and Nonoperative Treatment of Scapular Fractures

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ABSTRACT

The injury parameters and patient characteristics that affect function after scapular fracture are poorly defined. We performed a retrospective review of 594 adult patients with a minimum 12-month follow-up after scapular fracture. Functional outcomes were prospectively assessed using the American Shoulder and Elbow Surgeons (ASES) survey in 153 patients after a mean of 62 months of follow-up. The population was 78% male, and 88% had injuries caused by a high-energy event. Only 4.6% had injuries isolated to the scapula. All fractures healed primarily and the mean ASES score was 79.3, indicating minimal functional impairment. However, 7 patients (4.6%) reported severe functional deficits. Fifteen patients (9.8%) underwent open reduction and internal fixation. These patients had a better mean ASES score than those who were treated nonoperatively (92.1 vs 77.9, P = .03). When fracture types were analyzed individually, there was an advantage to surgery in fractures involving the glenoid (96.0 vs 75.7, P < .05). Concomitant chest wall injury or the presence of adjacent fractures did not affect functional outcomes. Smokers had a worse mean score (73.3 vs 84.5, P = .01), as did patients with a history of alcohol abuse (70.3 vs 83.9, P < .05). In conclusion, mean ASES scores indicated good function overall. Patients with a history of tobacco use or alcohol abuse had worse outcome scores.

Continue to: Scapular fractures occur frequently due to high-energy trauma...

 

 

Scapular fractures occur frequently due to high-energy trauma, with concomitant injuries seen in approximately 90% of cases.1-4 As a result, treatment is often surrounded by other difficult medical decisions, and factors affecting outcomes can be multifaceted. The gaps in our understanding of long-term outcomes with current treatment modalities have recently come to light, especially when it comes to determining indications for surgery.

Specifically, there is very little literature on radiographic healing and long-term shoulder function in larger samples of scapular fractures; additionally, there is evidence that some patients do not experience full functional recovery.3,5-7 Studies assessing return of function in patients treated nonoperatively have shown decreased mobility and persistence of pain.7 Some of these findings could be due to variability in surgical indications.2,4 While the majority of fractures are treated nonoperatively, the decision to operate has recently been one of debate. Prior literature has suggested highly variable measurements of angulation and extra-articular displacement at which surgery is recommended.1 For example, indications for surgery measured by the medial displacement of extra-articular fractures range from >10 mm to >20 mm;8-11 similarly, the displacement of intra-articular fractures meriting surgery ranges from >2 mm to >5 mm, depending on the author.12-16

The current debate over surgical indications for less severe scapular fractures, as well as the potential for chronic pain and stiffness calls for a thorough examination of factors affecting functional outcomes. The purpose of this study is to determine which patient factors, fracture patterns, and treatment modalities were associated with differences in healing and return of shoulder function. We hypothesized that certain aspects of the patient’s social history (tobacco, alcohol) as well as concomitant chest wall injuries may be associated with poor outcome scores and lower levels of function. We further hypothesized that glenoid fractures would affect function more than body fractures, and we did not expect to see a significant difference in outcomes between operative and nonoperative treatment.

MATERIALS AND METHODS

This study was approved by the Institutional Review Board. A registry at our level 1 trauma center was queried to identify 663 skeletally mature patients with scapular fractures between 1999 and 2011. Forty-eight patients had died prior to the study, and 21 patients had insufficient radiography and/or clinical follow-up (Figure 1). To be included, patients were required to have at least 1 year of follow-up to assess healing. Data on patient demographics, fracture classification, etiology of injury, concomitant injuries (clavicle fractures, rib fractures, pulmonary injuries), comorbidities, alcohol use, and tobacco use were collected retrospectively for the remaining 594 patients. Patients were then prospectively contacted via telephone and mail, employing 3 Internet search engines as needed, in an attempt to obtain current contact information. Three patients declined to participate, and 438 were not reachable after multiple attempts. Outcome scores for the remaining 153 patients were determined with the Modified American Shoulder and Elbow Surgeons (ASES) Shoulder Form.17 Scores were measured out of 100, with 0 to 30 representing maximally impaired, 31 to 60 representing moderately impaired, and 61 to 100 representing minimally impaired shoulder function.18 Due to the retrospective identification of the patients, no pre-injury shoulder function scores were collected. Given that many patients were unreachable, or reachable but not living in close proximity to the hospital, patients did not routinely return for re-evaluation for this study.

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Nonoperative management consisted of sling immobilization for comfort for up to 2 weeks, during which time Codman’s exercises and elbow, forearm, wrist, and hand motion were encouraged. Active and passive shoulder mobility without restriction were also recommended progressively as tolerated. Strengthening and unrestricted lifting activities were allowed after approximately 8 to 10 weeks following the injury. Decision for surgery was at the surgeon’s discretion. Surgical indications included articular displacement and severely displaced glenoid neck fractures. Open reduction and internal fixation was performed by 1 of 4 fellowship-trained surgeons. Concomitant surgical procedures were not undertaken in the same setting. Postoperative activity consisted of sling immobilization for comfort for up to 6 weeks, during which time active and passive shoulder mobility without restriction were also recommended progressively as tolerated. Strengthening and unrestricted lifting activities were allowed after approximately 12 weeks following surgery. We considered fractures as healed if either X-rays showed healing progression to complete union or early X-rays showing signs of healing with subsequent follow-up visits indicating clinical healing (absence of pain, absence of shoulder dysfunction).

Continue to: STATISTICAL ANALYSIS...

 

 

STATISTICAL ANALYSIS

Statistical analysis was undertaken with GraphPad software. Associations were tested between positive predictive variables and functional outcomes. Variables included gender, mechanism, fracture classification, patient comorbidities, social factors, associated injuries, and type of treatment. A Mann-Whitney rank test was used to test for associations between nonparametric variables, including patient age. In all cases, P < .05 was considered significant.

RESULTS

Complete clinical and radiographic data were available for 594 patients. This included 462 men and 132 women, with a mean age of 42.8 years (range, 15-92 years). Twenty-four patients (4.0%) sustained bilateral fractures, and 31 fractures (5.0%) were open. All fractures healed primarily. A total of 153 patients completed the ASES questionnaire at a mean of 62 months after injury (Table 1). This group was similar to the entire population with respect to age, gender, and type of treatment. In all, 135 patients had been injured by a high-energy mechanism (88%), and the fracture pattern as per the Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association (AO/OTA) classification consisted of 14A (no glenoid involvement) (n = 139; 91%) and 14B/C (glenoid involvement) (n = 14; 9.2%).19 The mean ASES score for our entire sample was 79.3 (minimally functionally impaired). In all, 117 patients (76%) reported minimal functional deficit (ASES, 61-100), 29 (19%) reported moderate functional deficit (ASES, 31-60), and only 7 (4.6%) reported maximum functional deficit (ASES, 0-30). Gender and age were not associated with functional outcome scores.

Table 1. Patient Demographics and Etiology of Scapula Fractures.

 

n

Gender

 

Men

119 (77.8%)

Women

34 (22.2%)

Mechanism

 

Motorcycle crash

48 (31.4%)

Motor vehicle collision

38 (24.8%)

Fall from stand

14 (9.2%)

Fall from height

13 (8.5%)

Pedestrian vs vehicle

11 (7.2%)

Crush

7 (4.5%)

Gunshot

5 (3.3%)

Other

17 (11.1%)

Fracture Pattern

 

14A

139 (88.2%)

14B/C

14 (11.8%)

 

Fifteen patients (9.8%) were treated surgically. They had a higher mean ASES score vs non-surgically treated patients (92.1 vs 77.9; P = .03) (Table 2). However, when patients were divided into 14A and 14B/C fracture patterns, there was only a significant advantage in outcome scores for operative vs nonoperative care in the 14B/C classification (96.0 vs 75.7; P < .05); meanwhile, surgery for scapular body fractures (14A) was not associated with better outcome scores (90.2 vs 78.3; P = .14). Unfortunately, assessment of these comparisons within classification groups resulted in underpowered analyses for these small groups.

Table 2. Number of ASES Surveys Completed and Mean ASES Score for Each Treatment Type and Fracture Classification

 

n

Mean ASES

Standard Error

Surgical (total)

15

92.1a

3.5

Surgical 14A

10

90.2

4.9

Surgical 14B/C

5

96.0a

3.2

Non-surgical (total)

138

77.9a

2.1

Nonsurgical. 14A

129

78.3

2.2

Nonsurgical 14B/C

9

75.7a

6.5

aP < 0.05.

Abbreviation: ASES, American Shoulder and Elbow Surgeons.

Table 3 shows the ASES scores for patients with various types of associated chest and shoulder injuries. Only 7 patients (4.6%) had injuries isolated to the scapula. Thirty-three patients (22%) had associated clavicle fractures, and 102 patients (67%) sustained concomitant chest wall injuries, including rib fractures (n = 88) and pulmonary injuries (n = 71). Patients with associated chest wall injuries did not have worse mean ASES scores than those without chest wall injuries (80.9 vs 78.2; P = .49). Additionally, patients who had concomitant clavicle fractures did not report worse scores than those who did not (83.2 vs 78.6; P = .46).

Table 3. Concomitant Injuries and Mean American Shoulder and Elbow Surgeons (ASES) Scores

 

n

Mean ASES

Standard Error

Clavicle fracture

33 (21.6%)

83.2

3.6

No clavicle fracture

120 (78.4%)

78.6

2.2

Chest wall injury

102 (66.7%)

80.9

2.1

Rib fracture

31 (20.3%)

82.4

3.6

Lung Injury

14 (9.2%)

80.8

5.5

Rib Fracture + Lung Injury

57 (37.3%)

80.2

3.0

No chest wall injury

51 (33.3%)

78.2

3.8

Isolated scapula fracture

7 (4.6%)

92.4

6.5

 

The majority of patients were self-reported smokers (54%) and alcohol drinkers (64%) (Table 4). Aspects of social history were associated with differences in functional outcome scores. Non-smokers had a higher mean ASES score than both current smokers (84.5 vs 72.8; P = .02) and patients with any lifetime history of smoking (84.5 vs 73.3; P = .01) (Figure 2). There was no significant difference in shoulder function scores between patients identified as non-drinkers and those who reported consuming alcohol at moderate levels (83.9 vs 78.9; P = .26); however, patients who had a documented history of alcohol abuse had lower mean ASES scores than those who reported being non-drinkers (70.3 vs 83.9; P < .05).

Table 4. Substance Use and Functional Outcome Scores

 

n

Mean ASES

Standard Error

Non-smoker

57 (46.3%)

84.5a

2.9

History of smoking

66 (53.7%)

73.3a

3.0

Smoker

45 (36.6%)

72.8a

3.8

Former

21 (17.1%)

74.6

5.1

No alcohol consumption

46 (36.2%)

83.9a

3.1

Moderate alcohol use

65 (51.2%)

78.9

2.9

Alcohol abuse

16 (12.6%)

70.3a

7.3

aP < 0.05.

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Continue to: DISCUSSION...

 

 

DISCUSSION

Patients with scapular fractures often require a complex set of treatment decisions due to high rates of concomitant injuries.2,20-22 A lack of large studies on long-term scapular function, as well as evidence that some patients treated conservatively for scapular fractures experience functional deficit and pain, inspired us to investigate the recovery process after scapular fractures through radiographs and the ASES survey.7 Further, we attempted to identify any factors that may be associated with poor functional results. Our review of long-term outcomes after scapular fractures demonstrates that they not only heal well but also have a good functional outcome in most cases. Over 95% had acceptable ASES scores, with both 14A and 14B/C having similar return of function. While both operatively and nonoperatively treated patients had scores indicating minimal functional impairment, those treated surgically had better scores overall. Surprisingly, concomitant injuries, including chest wall injuries, did not portend a worse shoulder outcome in our patients. The factors that were associated with worse outcome were tobacco use and alcohol abuse.

Beyond these findings, we attempted to comment on surgical indications, which have been highly debated.2,3 For example, the medial displacement at which studies suggest extra-articular fractures merit surgery ranges from >10 mm to >20 mm;8-11 similarly, the indication for surgery based on displacement of intra-articular fractures ranges from >2 mm to >5 mm, depending on the author.12-16 Glenoid articular fractures or neck fractures are other potential indications for operative treatment. In fact, a review of 520 scapular fractures from multiple studies found that 80% of those with glenoid involvement were treated operatively, while only 52% of those with exclusive acromion and/or coracoid involvement, and 1% of those with exclusive scapular body involvement were treated operatively.5 Some reports indicate that 14B/C fractures, especially those that are displaced or complex, show good functional outcomes and low complication rates after fixation.5,23 In this study, articular fractures of the glenoid were treated operatively more often than extra-articular fractures. We attempted to determine the impact of surgical care on functional outcomes according to fracture type, but we were limited by the small number of surgical patients when reviewing the 14A and 14B/C groups. As a whole, surgical patients had better outcomes than non-surgical patients. We believe this difference is clinically relevant and suggests a potential group of patients who may benefit from fixation. Further investigation is needed to better characterize these injuries and to develop specific recommendations.

This study yielded interesting results related to substance abuse. It has previously been shown that tobacco smoking and alcohol abuse have both been associated with poor bone health.24 Studies have suggested that exposure to nicotine and other chemical components in cigarettes can lead to delayed healing, higher rates of nonunion, and decreased mechanical strength of bone.25-29 Additionally, alcohol abuse has been associated with decreased bone mass and poor bone formation.24,30,31 Although we did not measure bone density or quantitate time of healing, this study provides added insight in that the healed fractures of smokers and patients with a history of alcohol abuse showed lower levels of shoulder function, as measured by ASES scores after similar initial injuries and similar follow-up periods. These results suggest that chemical, social, or a combination of these factors affect muscular recovery, other aspects of post-fracture recovery, and/or levels of baseline physical or mental impairment beyond those detailed in previous studies of bone health and substance abuse. For example, return to work was a scored category in the ASES survey that we used to asses the return of shoulder function, and several studies have shown that factors such as education level, coping abilities, and baseline functioning (cognitive, social, and physical) all have a significant impact on rates of return to work, independently of injury type.6,32-35 It is possible, then, that other aspects of the ASES survey are affected by factors that may be more prevalent in populations engaging in substance abuse. From both perspectives, these data highlight the importance of addressing tobacco use and alcohol abuse as a part of caring for all trauma patients, including those with scapular fractures, regardless of their high rates of radiographic healing. They also provide insight for prognosticating and setting patient expectations after scapular fractures.

Continue to: This study addressed the relationship between...

 

 

This study addressed the relationship between concomitant chest wall injuries and recovery of shoulder function after scapular fracture. Previous studies have suggested that concomitant chest wall injuries, such as rib fractures, cause more pain and may adversely impact the return of function in patients who have sustained scapular body fractures.1 These results, however, occurred in the setting of a much shorter follow-up, in which Disability of Arm, Shoulder, and Hand (DASH) surveys were distributed 6 months post-injury, 12 months post-injury, and once at last follow-up (<3 years). At our significantly later average follow-up, chest wall injuries did not portend a worse return of shoulder function, in contrast to our hypothesis. Our lack of findings of a worse return of function in patients with chest wall injuries, in light of previous literature, suggests that this association could become less distinct as the initial injury becomes more remote and has had more time to heal. Farther out from injury, patients seem to function similarly, regardless of chest wall injury history.

This study was limited by several factors. First, the surgically treated group was considerably smaller than the nonoperative group, which made drawing statistically significant comparisons between them challenging. Although there were no apparent differences between the group who completed ASES surveys and those who did not, only collecting ASES data on 153 of the 663 patients introduces a possible selection bias in this analysis. Additionally, due to the retrospective nature of this study, we were not able to ascertain the specific surgical indications used by individual surgeons. Again, the nature of this study also made it implausible to separate fractures beyond the simple 14A vs 14B/C classification. For example, we did not routinely have access to computed tomography scans to provide exact measurements of displacement, angulation, or step-off; therefore, we were unable to compare our fracture parameters to those mentioned in studies with more specific surgical indications. We also did not have information regarding pre-existing shoulder dysfunction, which could negatively affect ASES scores. Finally, accurate measures of certain social history factors can be difficult to achieve; smoking, alcohol consumption, and alcohol abuse may be subject to underreporting.

CONCLUSION

We assessed parameters that may affect return of shoulder function after scapular fracture. Our results indicate that both 14A and 14B/C fractures have similarly high rates of healing and minimal functional impairment. Patients treated operatively typically had better shoulder functional outcomes. Current or past tobacco use or alcohol abuse was associated with worse functional outcome scores. This could suggest chemical, social, or a combination of these factors affecting muscular recovery and/or greater levels of baseline functional impairment. Finally, concomitant chest wall injuries may not negatively affect shoulder outcome, contrasting with data from previous studies on the more immediate post-injury period.

References

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2. Voleti PB, Namdari S, Mehta S. Fractures of the scapula. Adv Orthop. 2012;2012:903850. doi:10.1155/2012/903850.

3. Cole PA, Gauger EM, Schroder LK. Management of scapular fractures. J Am Acad Orthop Surg. 2012;20(3):130-141. doi:10.5435/JAAOS-20-03-130.

4. Salimi J, Khaji A, Karbakhsh M, Saadat S, Eftekhar B. Scapular fracture: lower severity and mortality. Sao Paulo Med J. 2008;126(3):186-189. doi:10.1590/S1516-31802008000300009.

5. Anavian J, Gauger EM, Schroder LK, Wijdicks CA, Cole PA. Surgical and functional outcomes After operative management of complex and displaced intra-articular glenoid fractures. J Bone Joint Surg Am. 2012;94(7):645-653. doi:10.2106/JBJS.J.00896.

6. Brenneman FD, Redelmeier DA, Boulanger BR, McLellan BA, Culhane JP. Long-term outcomes in blunt trauma: who goes back to work? J Trauma. 1997;42(5):778-781. doi:10.1097/00005373-199705000-00004.

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16. Schandelmaier P, Blauth M, Schneider C, Krettek C. Fractures of the glenoid treated by operation. A 5-to 23-year follow-up of 22 cases. J Bone Joint Surg Br. 2002;84(2):173-177. doi:10.1302/0301-620X.84B2.12357.

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19. Marsh JL, Slongo TF, Agel J, et al. Fracture and dislocation classification compendium-2007 - Orthopedic Trauma Association classification. Orthop Trauma. 2007;21:S1-S133.

20. Armstrong CP, Van der Spuy J. The fractured scapula: importance and management based on a series of 62 patients. Injury. 1984;15(5):324-329. doi:10.1016/0020-1383(84)90056-1.

21. McGahan JP, Rab GT, Dublin A. Fractures of the scapula. J Trauma. 1980;20(10):880-883. doi:10.1097/00005373-198010000-00011.

22. Thompson DA, Flynn TC, Miller PW, Fischer RP. The significance of scapular fractures. J Trauma. 1985;25(10):974-977. doi:10.1097/00005373-198510000-00008.

23. Zlowodzki M, Bhandari M, Zelle BA, Kregor PJ, Cole PA. Treatment of scapula fractures: systematic review of 520 fractures in 22 case series. J Orthop Trauma. 2006;20(3):230-233. doi:10.1097/00005131-200603000-00013.

24. Fini M, Giavaresi G, Salamanna F, et al. Harmful lifestyles on orthopedic implantation surgery: a descriptive review on alcohol and tobacco use. J Bone Miner Metab. 2011;29(6):633-644. doi:10.1007/s00774-011-0309-1.

25. Donigan JA, Fredericks DC, Nepola JV, Smucker JD. The effect of transdermal nicotine on fracture healing in a rabbit model. J Orthop Trauma. 2012;26(12):724-727. doi:10.1097/BOT.0b013e318270466f.

26. Harvey EJ, Agel J, Selznick HS, Chapman JR, Henley MB. Deleterious effect of smoking on healing of open tibia-shaft fractures. Am J Orthop. 2002;31(9):518-521.

27. Hernigou J, Schuind F. Smoking as a predictor of negative outcome in diaphyseal fracture healing. Int Orthop. 2013;37(5):883-887. doi:10.1007/s00264-013-1809-5.

28. Hoogendoorn JM, van der Werken C. The adverse effects of smoking on healing of open tibial fractures. Ned Tijdschr Geneeskd. 2002;146(35):1640-1644.

29. Kyrö A, Usenius JP, Aarnio M, Kunnamo I, Avikainen V. Are smokers a risk group for delayed healing of tibial shaft fractures? Ann Chir Gynaecol. 1993;82(4):254-262.

30. Farley JR, Fitzsimmons R, Taylor AK, Jorch UM, Lau KH. Direct effects of ethanol on bone resorption and formation in vitro. Arch Biochem Biophys. 1985;238(1):305-314. doi:10.1016/0003-9861(85)90169-9.

31. Turner RT. Skeletal response to alcohol. Alcoholism Clin Exp Res. 2000;24(11):1693-1701. doi:10.1111/j.1530-0277.2000.tb01971.x.

32. MacKenzie EJ, Morris JA, Jurkovich GJ, et al. Return to work following injury: the role of economic, social, and job-related factors. Am J Public Health. 1998;88(11):1630-1637. doi:10.2105/AJPH.88.11.1630.

33. Schnyder U, Moergeli H, Klaghofer R, Sensky T, Buchi S. Does patient cognition predict time off from work after life-threatening accidents? Am J Psychiatry. 2003;160(11):2025-2031. doi:10.1176/appi.ajp.160.11.2025.

34. Soberg HL, Finset A, Bautz-Holter E, Sandvik L, Roise O. Return to work after severe multiple injuries: A multidimensional approach on status 1 and 2 years postinjury. J Trauma. 2007;62(2):471-481. doi:10.1097/TA.0b013e31802e95f4.

35. Soberg HL, Roise O, Bautz-Holter E, Finset A. Returning to work after severe multiple injuries: multidimensional functioning and the trajectory from injury to work at 5 years. J Trauma. 2011;71(2):425-434. doi:10.1097/TA.0b013e3181eff54f.

Author and Disclosure Information

Authors’ Disclosure Statement: The authors report no actual or potential conflict of interest in relation to this article.

Dr. Surace is a Resident Physician, Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, Ohio. Ms. Boyd is a Researcher, Department of Orthopaedic Surgery, MetroHealth System, Cleveland, Ohio. Dr. Vallier is a Professor of Orthoepdic Surgery, Department of Orthopaedic Surgery, Case Western Reserve University, Cleveland, Ohio.

Address correspondence to: Heather A. Vallier, MD, Case Western Reserve University, Department of Orthopaedic Surgery, 2500 MetroHealth Drive, Cleveland, OH 44109 (tel, 216-778-7476; email, hvallier@metrohealth.org).

Peter A. Surace, MD Alysse J. Boyd, MA Heather A. Vallier, MD . Case Series Evaluating the Operative and Nonoperative Treatment of Scapular Fractures. Am J Orthop.

August 31, 2018

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Author and Disclosure Information

Authors’ Disclosure Statement: The authors report no actual or potential conflict of interest in relation to this article.

Dr. Surace is a Resident Physician, Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, Ohio. Ms. Boyd is a Researcher, Department of Orthopaedic Surgery, MetroHealth System, Cleveland, Ohio. Dr. Vallier is a Professor of Orthoepdic Surgery, Department of Orthopaedic Surgery, Case Western Reserve University, Cleveland, Ohio.

Address correspondence to: Heather A. Vallier, MD, Case Western Reserve University, Department of Orthopaedic Surgery, 2500 MetroHealth Drive, Cleveland, OH 44109 (tel, 216-778-7476; email, hvallier@metrohealth.org).

Peter A. Surace, MD Alysse J. Boyd, MA Heather A. Vallier, MD . Case Series Evaluating the Operative and Nonoperative Treatment of Scapular Fractures. Am J Orthop.

August 31, 2018

Author and Disclosure Information

Authors’ Disclosure Statement: The authors report no actual or potential conflict of interest in relation to this article.

Dr. Surace is a Resident Physician, Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, Ohio. Ms. Boyd is a Researcher, Department of Orthopaedic Surgery, MetroHealth System, Cleveland, Ohio. Dr. Vallier is a Professor of Orthoepdic Surgery, Department of Orthopaedic Surgery, Case Western Reserve University, Cleveland, Ohio.

Address correspondence to: Heather A. Vallier, MD, Case Western Reserve University, Department of Orthopaedic Surgery, 2500 MetroHealth Drive, Cleveland, OH 44109 (tel, 216-778-7476; email, hvallier@metrohealth.org).

Peter A. Surace, MD Alysse J. Boyd, MA Heather A. Vallier, MD . Case Series Evaluating the Operative and Nonoperative Treatment of Scapular Fractures. Am J Orthop.

August 31, 2018

ABSTRACT

The injury parameters and patient characteristics that affect function after scapular fracture are poorly defined. We performed a retrospective review of 594 adult patients with a minimum 12-month follow-up after scapular fracture. Functional outcomes were prospectively assessed using the American Shoulder and Elbow Surgeons (ASES) survey in 153 patients after a mean of 62 months of follow-up. The population was 78% male, and 88% had injuries caused by a high-energy event. Only 4.6% had injuries isolated to the scapula. All fractures healed primarily and the mean ASES score was 79.3, indicating minimal functional impairment. However, 7 patients (4.6%) reported severe functional deficits. Fifteen patients (9.8%) underwent open reduction and internal fixation. These patients had a better mean ASES score than those who were treated nonoperatively (92.1 vs 77.9, P = .03). When fracture types were analyzed individually, there was an advantage to surgery in fractures involving the glenoid (96.0 vs 75.7, P < .05). Concomitant chest wall injury or the presence of adjacent fractures did not affect functional outcomes. Smokers had a worse mean score (73.3 vs 84.5, P = .01), as did patients with a history of alcohol abuse (70.3 vs 83.9, P < .05). In conclusion, mean ASES scores indicated good function overall. Patients with a history of tobacco use or alcohol abuse had worse outcome scores.

Continue to: Scapular fractures occur frequently due to high-energy trauma...

 

 

Scapular fractures occur frequently due to high-energy trauma, with concomitant injuries seen in approximately 90% of cases.1-4 As a result, treatment is often surrounded by other difficult medical decisions, and factors affecting outcomes can be multifaceted. The gaps in our understanding of long-term outcomes with current treatment modalities have recently come to light, especially when it comes to determining indications for surgery.

Specifically, there is very little literature on radiographic healing and long-term shoulder function in larger samples of scapular fractures; additionally, there is evidence that some patients do not experience full functional recovery.3,5-7 Studies assessing return of function in patients treated nonoperatively have shown decreased mobility and persistence of pain.7 Some of these findings could be due to variability in surgical indications.2,4 While the majority of fractures are treated nonoperatively, the decision to operate has recently been one of debate. Prior literature has suggested highly variable measurements of angulation and extra-articular displacement at which surgery is recommended.1 For example, indications for surgery measured by the medial displacement of extra-articular fractures range from >10 mm to >20 mm;8-11 similarly, the displacement of intra-articular fractures meriting surgery ranges from >2 mm to >5 mm, depending on the author.12-16

The current debate over surgical indications for less severe scapular fractures, as well as the potential for chronic pain and stiffness calls for a thorough examination of factors affecting functional outcomes. The purpose of this study is to determine which patient factors, fracture patterns, and treatment modalities were associated with differences in healing and return of shoulder function. We hypothesized that certain aspects of the patient’s social history (tobacco, alcohol) as well as concomitant chest wall injuries may be associated with poor outcome scores and lower levels of function. We further hypothesized that glenoid fractures would affect function more than body fractures, and we did not expect to see a significant difference in outcomes between operative and nonoperative treatment.

MATERIALS AND METHODS

This study was approved by the Institutional Review Board. A registry at our level 1 trauma center was queried to identify 663 skeletally mature patients with scapular fractures between 1999 and 2011. Forty-eight patients had died prior to the study, and 21 patients had insufficient radiography and/or clinical follow-up (Figure 1). To be included, patients were required to have at least 1 year of follow-up to assess healing. Data on patient demographics, fracture classification, etiology of injury, concomitant injuries (clavicle fractures, rib fractures, pulmonary injuries), comorbidities, alcohol use, and tobacco use were collected retrospectively for the remaining 594 patients. Patients were then prospectively contacted via telephone and mail, employing 3 Internet search engines as needed, in an attempt to obtain current contact information. Three patients declined to participate, and 438 were not reachable after multiple attempts. Outcome scores for the remaining 153 patients were determined with the Modified American Shoulder and Elbow Surgeons (ASES) Shoulder Form.17 Scores were measured out of 100, with 0 to 30 representing maximally impaired, 31 to 60 representing moderately impaired, and 61 to 100 representing minimally impaired shoulder function.18 Due to the retrospective identification of the patients, no pre-injury shoulder function scores were collected. Given that many patients were unreachable, or reachable but not living in close proximity to the hospital, patients did not routinely return for re-evaluation for this study.

vallier0818_f1

Nonoperative management consisted of sling immobilization for comfort for up to 2 weeks, during which time Codman’s exercises and elbow, forearm, wrist, and hand motion were encouraged. Active and passive shoulder mobility without restriction were also recommended progressively as tolerated. Strengthening and unrestricted lifting activities were allowed after approximately 8 to 10 weeks following the injury. Decision for surgery was at the surgeon’s discretion. Surgical indications included articular displacement and severely displaced glenoid neck fractures. Open reduction and internal fixation was performed by 1 of 4 fellowship-trained surgeons. Concomitant surgical procedures were not undertaken in the same setting. Postoperative activity consisted of sling immobilization for comfort for up to 6 weeks, during which time active and passive shoulder mobility without restriction were also recommended progressively as tolerated. Strengthening and unrestricted lifting activities were allowed after approximately 12 weeks following surgery. We considered fractures as healed if either X-rays showed healing progression to complete union or early X-rays showing signs of healing with subsequent follow-up visits indicating clinical healing (absence of pain, absence of shoulder dysfunction).

Continue to: STATISTICAL ANALYSIS...

 

 

STATISTICAL ANALYSIS

Statistical analysis was undertaken with GraphPad software. Associations were tested between positive predictive variables and functional outcomes. Variables included gender, mechanism, fracture classification, patient comorbidities, social factors, associated injuries, and type of treatment. A Mann-Whitney rank test was used to test for associations between nonparametric variables, including patient age. In all cases, P < .05 was considered significant.

RESULTS

Complete clinical and radiographic data were available for 594 patients. This included 462 men and 132 women, with a mean age of 42.8 years (range, 15-92 years). Twenty-four patients (4.0%) sustained bilateral fractures, and 31 fractures (5.0%) were open. All fractures healed primarily. A total of 153 patients completed the ASES questionnaire at a mean of 62 months after injury (Table 1). This group was similar to the entire population with respect to age, gender, and type of treatment. In all, 135 patients had been injured by a high-energy mechanism (88%), and the fracture pattern as per the Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association (AO/OTA) classification consisted of 14A (no glenoid involvement) (n = 139; 91%) and 14B/C (glenoid involvement) (n = 14; 9.2%).19 The mean ASES score for our entire sample was 79.3 (minimally functionally impaired). In all, 117 patients (76%) reported minimal functional deficit (ASES, 61-100), 29 (19%) reported moderate functional deficit (ASES, 31-60), and only 7 (4.6%) reported maximum functional deficit (ASES, 0-30). Gender and age were not associated with functional outcome scores.

Table 1. Patient Demographics and Etiology of Scapula Fractures.

 

n

Gender

 

Men

119 (77.8%)

Women

34 (22.2%)

Mechanism

 

Motorcycle crash

48 (31.4%)

Motor vehicle collision

38 (24.8%)

Fall from stand

14 (9.2%)

Fall from height

13 (8.5%)

Pedestrian vs vehicle

11 (7.2%)

Crush

7 (4.5%)

Gunshot

5 (3.3%)

Other

17 (11.1%)

Fracture Pattern

 

14A

139 (88.2%)

14B/C

14 (11.8%)

 

Fifteen patients (9.8%) were treated surgically. They had a higher mean ASES score vs non-surgically treated patients (92.1 vs 77.9; P = .03) (Table 2). However, when patients were divided into 14A and 14B/C fracture patterns, there was only a significant advantage in outcome scores for operative vs nonoperative care in the 14B/C classification (96.0 vs 75.7; P < .05); meanwhile, surgery for scapular body fractures (14A) was not associated with better outcome scores (90.2 vs 78.3; P = .14). Unfortunately, assessment of these comparisons within classification groups resulted in underpowered analyses for these small groups.

Table 2. Number of ASES Surveys Completed and Mean ASES Score for Each Treatment Type and Fracture Classification

 

n

Mean ASES

Standard Error

Surgical (total)

15

92.1a

3.5

Surgical 14A

10

90.2

4.9

Surgical 14B/C

5

96.0a

3.2

Non-surgical (total)

138

77.9a

2.1

Nonsurgical. 14A

129

78.3

2.2

Nonsurgical 14B/C

9

75.7a

6.5

aP < 0.05.

Abbreviation: ASES, American Shoulder and Elbow Surgeons.

Table 3 shows the ASES scores for patients with various types of associated chest and shoulder injuries. Only 7 patients (4.6%) had injuries isolated to the scapula. Thirty-three patients (22%) had associated clavicle fractures, and 102 patients (67%) sustained concomitant chest wall injuries, including rib fractures (n = 88) and pulmonary injuries (n = 71). Patients with associated chest wall injuries did not have worse mean ASES scores than those without chest wall injuries (80.9 vs 78.2; P = .49). Additionally, patients who had concomitant clavicle fractures did not report worse scores than those who did not (83.2 vs 78.6; P = .46).

Table 3. Concomitant Injuries and Mean American Shoulder and Elbow Surgeons (ASES) Scores

 

n

Mean ASES

Standard Error

Clavicle fracture

33 (21.6%)

83.2

3.6

No clavicle fracture

120 (78.4%)

78.6

2.2

Chest wall injury

102 (66.7%)

80.9

2.1

Rib fracture

31 (20.3%)

82.4

3.6

Lung Injury

14 (9.2%)

80.8

5.5

Rib Fracture + Lung Injury

57 (37.3%)

80.2

3.0

No chest wall injury

51 (33.3%)

78.2

3.8

Isolated scapula fracture

7 (4.6%)

92.4

6.5

 

The majority of patients were self-reported smokers (54%) and alcohol drinkers (64%) (Table 4). Aspects of social history were associated with differences in functional outcome scores. Non-smokers had a higher mean ASES score than both current smokers (84.5 vs 72.8; P = .02) and patients with any lifetime history of smoking (84.5 vs 73.3; P = .01) (Figure 2). There was no significant difference in shoulder function scores between patients identified as non-drinkers and those who reported consuming alcohol at moderate levels (83.9 vs 78.9; P = .26); however, patients who had a documented history of alcohol abuse had lower mean ASES scores than those who reported being non-drinkers (70.3 vs 83.9; P < .05).

Table 4. Substance Use and Functional Outcome Scores

 

n

Mean ASES

Standard Error

Non-smoker

57 (46.3%)

84.5a

2.9

History of smoking

66 (53.7%)

73.3a

3.0

Smoker

45 (36.6%)

72.8a

3.8

Former

21 (17.1%)

74.6

5.1

No alcohol consumption

46 (36.2%)

83.9a

3.1

Moderate alcohol use

65 (51.2%)

78.9

2.9

Alcohol abuse

16 (12.6%)

70.3a

7.3

aP < 0.05.

vallier0818_f2_0

Continue to: DISCUSSION...

 

 

DISCUSSION

Patients with scapular fractures often require a complex set of treatment decisions due to high rates of concomitant injuries.2,20-22 A lack of large studies on long-term scapular function, as well as evidence that some patients treated conservatively for scapular fractures experience functional deficit and pain, inspired us to investigate the recovery process after scapular fractures through radiographs and the ASES survey.7 Further, we attempted to identify any factors that may be associated with poor functional results. Our review of long-term outcomes after scapular fractures demonstrates that they not only heal well but also have a good functional outcome in most cases. Over 95% had acceptable ASES scores, with both 14A and 14B/C having similar return of function. While both operatively and nonoperatively treated patients had scores indicating minimal functional impairment, those treated surgically had better scores overall. Surprisingly, concomitant injuries, including chest wall injuries, did not portend a worse shoulder outcome in our patients. The factors that were associated with worse outcome were tobacco use and alcohol abuse.

Beyond these findings, we attempted to comment on surgical indications, which have been highly debated.2,3 For example, the medial displacement at which studies suggest extra-articular fractures merit surgery ranges from >10 mm to >20 mm;8-11 similarly, the indication for surgery based on displacement of intra-articular fractures ranges from >2 mm to >5 mm, depending on the author.12-16 Glenoid articular fractures or neck fractures are other potential indications for operative treatment. In fact, a review of 520 scapular fractures from multiple studies found that 80% of those with glenoid involvement were treated operatively, while only 52% of those with exclusive acromion and/or coracoid involvement, and 1% of those with exclusive scapular body involvement were treated operatively.5 Some reports indicate that 14B/C fractures, especially those that are displaced or complex, show good functional outcomes and low complication rates after fixation.5,23 In this study, articular fractures of the glenoid were treated operatively more often than extra-articular fractures. We attempted to determine the impact of surgical care on functional outcomes according to fracture type, but we were limited by the small number of surgical patients when reviewing the 14A and 14B/C groups. As a whole, surgical patients had better outcomes than non-surgical patients. We believe this difference is clinically relevant and suggests a potential group of patients who may benefit from fixation. Further investigation is needed to better characterize these injuries and to develop specific recommendations.

This study yielded interesting results related to substance abuse. It has previously been shown that tobacco smoking and alcohol abuse have both been associated with poor bone health.24 Studies have suggested that exposure to nicotine and other chemical components in cigarettes can lead to delayed healing, higher rates of nonunion, and decreased mechanical strength of bone.25-29 Additionally, alcohol abuse has been associated with decreased bone mass and poor bone formation.24,30,31 Although we did not measure bone density or quantitate time of healing, this study provides added insight in that the healed fractures of smokers and patients with a history of alcohol abuse showed lower levels of shoulder function, as measured by ASES scores after similar initial injuries and similar follow-up periods. These results suggest that chemical, social, or a combination of these factors affect muscular recovery, other aspects of post-fracture recovery, and/or levels of baseline physical or mental impairment beyond those detailed in previous studies of bone health and substance abuse. For example, return to work was a scored category in the ASES survey that we used to asses the return of shoulder function, and several studies have shown that factors such as education level, coping abilities, and baseline functioning (cognitive, social, and physical) all have a significant impact on rates of return to work, independently of injury type.6,32-35 It is possible, then, that other aspects of the ASES survey are affected by factors that may be more prevalent in populations engaging in substance abuse. From both perspectives, these data highlight the importance of addressing tobacco use and alcohol abuse as a part of caring for all trauma patients, including those with scapular fractures, regardless of their high rates of radiographic healing. They also provide insight for prognosticating and setting patient expectations after scapular fractures.

Continue to: This study addressed the relationship between...

 

 

This study addressed the relationship between concomitant chest wall injuries and recovery of shoulder function after scapular fracture. Previous studies have suggested that concomitant chest wall injuries, such as rib fractures, cause more pain and may adversely impact the return of function in patients who have sustained scapular body fractures.1 These results, however, occurred in the setting of a much shorter follow-up, in which Disability of Arm, Shoulder, and Hand (DASH) surveys were distributed 6 months post-injury, 12 months post-injury, and once at last follow-up (<3 years). At our significantly later average follow-up, chest wall injuries did not portend a worse return of shoulder function, in contrast to our hypothesis. Our lack of findings of a worse return of function in patients with chest wall injuries, in light of previous literature, suggests that this association could become less distinct as the initial injury becomes more remote and has had more time to heal. Farther out from injury, patients seem to function similarly, regardless of chest wall injury history.

This study was limited by several factors. First, the surgically treated group was considerably smaller than the nonoperative group, which made drawing statistically significant comparisons between them challenging. Although there were no apparent differences between the group who completed ASES surveys and those who did not, only collecting ASES data on 153 of the 663 patients introduces a possible selection bias in this analysis. Additionally, due to the retrospective nature of this study, we were not able to ascertain the specific surgical indications used by individual surgeons. Again, the nature of this study also made it implausible to separate fractures beyond the simple 14A vs 14B/C classification. For example, we did not routinely have access to computed tomography scans to provide exact measurements of displacement, angulation, or step-off; therefore, we were unable to compare our fracture parameters to those mentioned in studies with more specific surgical indications. We also did not have information regarding pre-existing shoulder dysfunction, which could negatively affect ASES scores. Finally, accurate measures of certain social history factors can be difficult to achieve; smoking, alcohol consumption, and alcohol abuse may be subject to underreporting.

CONCLUSION

We assessed parameters that may affect return of shoulder function after scapular fracture. Our results indicate that both 14A and 14B/C fractures have similarly high rates of healing and minimal functional impairment. Patients treated operatively typically had better shoulder functional outcomes. Current or past tobacco use or alcohol abuse was associated with worse functional outcome scores. This could suggest chemical, social, or a combination of these factors affecting muscular recovery and/or greater levels of baseline functional impairment. Finally, concomitant chest wall injuries may not negatively affect shoulder outcome, contrasting with data from previous studies on the more immediate post-injury period.

ABSTRACT

The injury parameters and patient characteristics that affect function after scapular fracture are poorly defined. We performed a retrospective review of 594 adult patients with a minimum 12-month follow-up after scapular fracture. Functional outcomes were prospectively assessed using the American Shoulder and Elbow Surgeons (ASES) survey in 153 patients after a mean of 62 months of follow-up. The population was 78% male, and 88% had injuries caused by a high-energy event. Only 4.6% had injuries isolated to the scapula. All fractures healed primarily and the mean ASES score was 79.3, indicating minimal functional impairment. However, 7 patients (4.6%) reported severe functional deficits. Fifteen patients (9.8%) underwent open reduction and internal fixation. These patients had a better mean ASES score than those who were treated nonoperatively (92.1 vs 77.9, P = .03). When fracture types were analyzed individually, there was an advantage to surgery in fractures involving the glenoid (96.0 vs 75.7, P < .05). Concomitant chest wall injury or the presence of adjacent fractures did not affect functional outcomes. Smokers had a worse mean score (73.3 vs 84.5, P = .01), as did patients with a history of alcohol abuse (70.3 vs 83.9, P < .05). In conclusion, mean ASES scores indicated good function overall. Patients with a history of tobacco use or alcohol abuse had worse outcome scores.

Continue to: Scapular fractures occur frequently due to high-energy trauma...

 

 

Scapular fractures occur frequently due to high-energy trauma, with concomitant injuries seen in approximately 90% of cases.1-4 As a result, treatment is often surrounded by other difficult medical decisions, and factors affecting outcomes can be multifaceted. The gaps in our understanding of long-term outcomes with current treatment modalities have recently come to light, especially when it comes to determining indications for surgery.

Specifically, there is very little literature on radiographic healing and long-term shoulder function in larger samples of scapular fractures; additionally, there is evidence that some patients do not experience full functional recovery.3,5-7 Studies assessing return of function in patients treated nonoperatively have shown decreased mobility and persistence of pain.7 Some of these findings could be due to variability in surgical indications.2,4 While the majority of fractures are treated nonoperatively, the decision to operate has recently been one of debate. Prior literature has suggested highly variable measurements of angulation and extra-articular displacement at which surgery is recommended.1 For example, indications for surgery measured by the medial displacement of extra-articular fractures range from >10 mm to >20 mm;8-11 similarly, the displacement of intra-articular fractures meriting surgery ranges from >2 mm to >5 mm, depending on the author.12-16

The current debate over surgical indications for less severe scapular fractures, as well as the potential for chronic pain and stiffness calls for a thorough examination of factors affecting functional outcomes. The purpose of this study is to determine which patient factors, fracture patterns, and treatment modalities were associated with differences in healing and return of shoulder function. We hypothesized that certain aspects of the patient’s social history (tobacco, alcohol) as well as concomitant chest wall injuries may be associated with poor outcome scores and lower levels of function. We further hypothesized that glenoid fractures would affect function more than body fractures, and we did not expect to see a significant difference in outcomes between operative and nonoperative treatment.

MATERIALS AND METHODS

This study was approved by the Institutional Review Board. A registry at our level 1 trauma center was queried to identify 663 skeletally mature patients with scapular fractures between 1999 and 2011. Forty-eight patients had died prior to the study, and 21 patients had insufficient radiography and/or clinical follow-up (Figure 1). To be included, patients were required to have at least 1 year of follow-up to assess healing. Data on patient demographics, fracture classification, etiology of injury, concomitant injuries (clavicle fractures, rib fractures, pulmonary injuries), comorbidities, alcohol use, and tobacco use were collected retrospectively for the remaining 594 patients. Patients were then prospectively contacted via telephone and mail, employing 3 Internet search engines as needed, in an attempt to obtain current contact information. Three patients declined to participate, and 438 were not reachable after multiple attempts. Outcome scores for the remaining 153 patients were determined with the Modified American Shoulder and Elbow Surgeons (ASES) Shoulder Form.17 Scores were measured out of 100, with 0 to 30 representing maximally impaired, 31 to 60 representing moderately impaired, and 61 to 100 representing minimally impaired shoulder function.18 Due to the retrospective identification of the patients, no pre-injury shoulder function scores were collected. Given that many patients were unreachable, or reachable but not living in close proximity to the hospital, patients did not routinely return for re-evaluation for this study.

vallier0818_f1

Nonoperative management consisted of sling immobilization for comfort for up to 2 weeks, during which time Codman’s exercises and elbow, forearm, wrist, and hand motion were encouraged. Active and passive shoulder mobility without restriction were also recommended progressively as tolerated. Strengthening and unrestricted lifting activities were allowed after approximately 8 to 10 weeks following the injury. Decision for surgery was at the surgeon’s discretion. Surgical indications included articular displacement and severely displaced glenoid neck fractures. Open reduction and internal fixation was performed by 1 of 4 fellowship-trained surgeons. Concomitant surgical procedures were not undertaken in the same setting. Postoperative activity consisted of sling immobilization for comfort for up to 6 weeks, during which time active and passive shoulder mobility without restriction were also recommended progressively as tolerated. Strengthening and unrestricted lifting activities were allowed after approximately 12 weeks following surgery. We considered fractures as healed if either X-rays showed healing progression to complete union or early X-rays showing signs of healing with subsequent follow-up visits indicating clinical healing (absence of pain, absence of shoulder dysfunction).

Continue to: STATISTICAL ANALYSIS...

 

 

STATISTICAL ANALYSIS

Statistical analysis was undertaken with GraphPad software. Associations were tested between positive predictive variables and functional outcomes. Variables included gender, mechanism, fracture classification, patient comorbidities, social factors, associated injuries, and type of treatment. A Mann-Whitney rank test was used to test for associations between nonparametric variables, including patient age. In all cases, P < .05 was considered significant.

RESULTS

Complete clinical and radiographic data were available for 594 patients. This included 462 men and 132 women, with a mean age of 42.8 years (range, 15-92 years). Twenty-four patients (4.0%) sustained bilateral fractures, and 31 fractures (5.0%) were open. All fractures healed primarily. A total of 153 patients completed the ASES questionnaire at a mean of 62 months after injury (Table 1). This group was similar to the entire population with respect to age, gender, and type of treatment. In all, 135 patients had been injured by a high-energy mechanism (88%), and the fracture pattern as per the Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association (AO/OTA) classification consisted of 14A (no glenoid involvement) (n = 139; 91%) and 14B/C (glenoid involvement) (n = 14; 9.2%).19 The mean ASES score for our entire sample was 79.3 (minimally functionally impaired). In all, 117 patients (76%) reported minimal functional deficit (ASES, 61-100), 29 (19%) reported moderate functional deficit (ASES, 31-60), and only 7 (4.6%) reported maximum functional deficit (ASES, 0-30). Gender and age were not associated with functional outcome scores.

Table 1. Patient Demographics and Etiology of Scapula Fractures.

 

n

Gender

 

Men

119 (77.8%)

Women

34 (22.2%)

Mechanism

 

Motorcycle crash

48 (31.4%)

Motor vehicle collision

38 (24.8%)

Fall from stand

14 (9.2%)

Fall from height

13 (8.5%)

Pedestrian vs vehicle

11 (7.2%)

Crush

7 (4.5%)

Gunshot

5 (3.3%)

Other

17 (11.1%)

Fracture Pattern

 

14A

139 (88.2%)

14B/C

14 (11.8%)

 

Fifteen patients (9.8%) were treated surgically. They had a higher mean ASES score vs non-surgically treated patients (92.1 vs 77.9; P = .03) (Table 2). However, when patients were divided into 14A and 14B/C fracture patterns, there was only a significant advantage in outcome scores for operative vs nonoperative care in the 14B/C classification (96.0 vs 75.7; P < .05); meanwhile, surgery for scapular body fractures (14A) was not associated with better outcome scores (90.2 vs 78.3; P = .14). Unfortunately, assessment of these comparisons within classification groups resulted in underpowered analyses for these small groups.

Table 2. Number of ASES Surveys Completed and Mean ASES Score for Each Treatment Type and Fracture Classification

 

n

Mean ASES

Standard Error

Surgical (total)

15

92.1a

3.5

Surgical 14A

10

90.2

4.9

Surgical 14B/C

5

96.0a

3.2

Non-surgical (total)

138

77.9a

2.1

Nonsurgical. 14A

129

78.3

2.2

Nonsurgical 14B/C

9

75.7a

6.5

aP < 0.05.

Abbreviation: ASES, American Shoulder and Elbow Surgeons.

Table 3 shows the ASES scores for patients with various types of associated chest and shoulder injuries. Only 7 patients (4.6%) had injuries isolated to the scapula. Thirty-three patients (22%) had associated clavicle fractures, and 102 patients (67%) sustained concomitant chest wall injuries, including rib fractures (n = 88) and pulmonary injuries (n = 71). Patients with associated chest wall injuries did not have worse mean ASES scores than those without chest wall injuries (80.9 vs 78.2; P = .49). Additionally, patients who had concomitant clavicle fractures did not report worse scores than those who did not (83.2 vs 78.6; P = .46).

Table 3. Concomitant Injuries and Mean American Shoulder and Elbow Surgeons (ASES) Scores

 

n

Mean ASES

Standard Error

Clavicle fracture

33 (21.6%)

83.2

3.6

No clavicle fracture

120 (78.4%)

78.6

2.2

Chest wall injury

102 (66.7%)

80.9

2.1

Rib fracture

31 (20.3%)

82.4

3.6

Lung Injury

14 (9.2%)

80.8

5.5

Rib Fracture + Lung Injury

57 (37.3%)

80.2

3.0

No chest wall injury

51 (33.3%)

78.2

3.8

Isolated scapula fracture

7 (4.6%)

92.4

6.5

 

The majority of patients were self-reported smokers (54%) and alcohol drinkers (64%) (Table 4). Aspects of social history were associated with differences in functional outcome scores. Non-smokers had a higher mean ASES score than both current smokers (84.5 vs 72.8; P = .02) and patients with any lifetime history of smoking (84.5 vs 73.3; P = .01) (Figure 2). There was no significant difference in shoulder function scores between patients identified as non-drinkers and those who reported consuming alcohol at moderate levels (83.9 vs 78.9; P = .26); however, patients who had a documented history of alcohol abuse had lower mean ASES scores than those who reported being non-drinkers (70.3 vs 83.9; P < .05).

Table 4. Substance Use and Functional Outcome Scores

 

n

Mean ASES

Standard Error

Non-smoker

57 (46.3%)

84.5a

2.9

History of smoking

66 (53.7%)

73.3a

3.0

Smoker

45 (36.6%)

72.8a

3.8

Former

21 (17.1%)

74.6

5.1

No alcohol consumption

46 (36.2%)

83.9a

3.1

Moderate alcohol use

65 (51.2%)

78.9

2.9

Alcohol abuse

16 (12.6%)

70.3a

7.3

aP < 0.05.

vallier0818_f2_0

Continue to: DISCUSSION...

 

 

DISCUSSION

Patients with scapular fractures often require a complex set of treatment decisions due to high rates of concomitant injuries.2,20-22 A lack of large studies on long-term scapular function, as well as evidence that some patients treated conservatively for scapular fractures experience functional deficit and pain, inspired us to investigate the recovery process after scapular fractures through radiographs and the ASES survey.7 Further, we attempted to identify any factors that may be associated with poor functional results. Our review of long-term outcomes after scapular fractures demonstrates that they not only heal well but also have a good functional outcome in most cases. Over 95% had acceptable ASES scores, with both 14A and 14B/C having similar return of function. While both operatively and nonoperatively treated patients had scores indicating minimal functional impairment, those treated surgically had better scores overall. Surprisingly, concomitant injuries, including chest wall injuries, did not portend a worse shoulder outcome in our patients. The factors that were associated with worse outcome were tobacco use and alcohol abuse.

Beyond these findings, we attempted to comment on surgical indications, which have been highly debated.2,3 For example, the medial displacement at which studies suggest extra-articular fractures merit surgery ranges from >10 mm to >20 mm;8-11 similarly, the indication for surgery based on displacement of intra-articular fractures ranges from >2 mm to >5 mm, depending on the author.12-16 Glenoid articular fractures or neck fractures are other potential indications for operative treatment. In fact, a review of 520 scapular fractures from multiple studies found that 80% of those with glenoid involvement were treated operatively, while only 52% of those with exclusive acromion and/or coracoid involvement, and 1% of those with exclusive scapular body involvement were treated operatively.5 Some reports indicate that 14B/C fractures, especially those that are displaced or complex, show good functional outcomes and low complication rates after fixation.5,23 In this study, articular fractures of the glenoid were treated operatively more often than extra-articular fractures. We attempted to determine the impact of surgical care on functional outcomes according to fracture type, but we were limited by the small number of surgical patients when reviewing the 14A and 14B/C groups. As a whole, surgical patients had better outcomes than non-surgical patients. We believe this difference is clinically relevant and suggests a potential group of patients who may benefit from fixation. Further investigation is needed to better characterize these injuries and to develop specific recommendations.

This study yielded interesting results related to substance abuse. It has previously been shown that tobacco smoking and alcohol abuse have both been associated with poor bone health.24 Studies have suggested that exposure to nicotine and other chemical components in cigarettes can lead to delayed healing, higher rates of nonunion, and decreased mechanical strength of bone.25-29 Additionally, alcohol abuse has been associated with decreased bone mass and poor bone formation.24,30,31 Although we did not measure bone density or quantitate time of healing, this study provides added insight in that the healed fractures of smokers and patients with a history of alcohol abuse showed lower levels of shoulder function, as measured by ASES scores after similar initial injuries and similar follow-up periods. These results suggest that chemical, social, or a combination of these factors affect muscular recovery, other aspects of post-fracture recovery, and/or levels of baseline physical or mental impairment beyond those detailed in previous studies of bone health and substance abuse. For example, return to work was a scored category in the ASES survey that we used to asses the return of shoulder function, and several studies have shown that factors such as education level, coping abilities, and baseline functioning (cognitive, social, and physical) all have a significant impact on rates of return to work, independently of injury type.6,32-35 It is possible, then, that other aspects of the ASES survey are affected by factors that may be more prevalent in populations engaging in substance abuse. From both perspectives, these data highlight the importance of addressing tobacco use and alcohol abuse as a part of caring for all trauma patients, including those with scapular fractures, regardless of their high rates of radiographic healing. They also provide insight for prognosticating and setting patient expectations after scapular fractures.

Continue to: This study addressed the relationship between...

 

 

This study addressed the relationship between concomitant chest wall injuries and recovery of shoulder function after scapular fracture. Previous studies have suggested that concomitant chest wall injuries, such as rib fractures, cause more pain and may adversely impact the return of function in patients who have sustained scapular body fractures.1 These results, however, occurred in the setting of a much shorter follow-up, in which Disability of Arm, Shoulder, and Hand (DASH) surveys were distributed 6 months post-injury, 12 months post-injury, and once at last follow-up (<3 years). At our significantly later average follow-up, chest wall injuries did not portend a worse return of shoulder function, in contrast to our hypothesis. Our lack of findings of a worse return of function in patients with chest wall injuries, in light of previous literature, suggests that this association could become less distinct as the initial injury becomes more remote and has had more time to heal. Farther out from injury, patients seem to function similarly, regardless of chest wall injury history.

This study was limited by several factors. First, the surgically treated group was considerably smaller than the nonoperative group, which made drawing statistically significant comparisons between them challenging. Although there were no apparent differences between the group who completed ASES surveys and those who did not, only collecting ASES data on 153 of the 663 patients introduces a possible selection bias in this analysis. Additionally, due to the retrospective nature of this study, we were not able to ascertain the specific surgical indications used by individual surgeons. Again, the nature of this study also made it implausible to separate fractures beyond the simple 14A vs 14B/C classification. For example, we did not routinely have access to computed tomography scans to provide exact measurements of displacement, angulation, or step-off; therefore, we were unable to compare our fracture parameters to those mentioned in studies with more specific surgical indications. We also did not have information regarding pre-existing shoulder dysfunction, which could negatively affect ASES scores. Finally, accurate measures of certain social history factors can be difficult to achieve; smoking, alcohol consumption, and alcohol abuse may be subject to underreporting.

CONCLUSION

We assessed parameters that may affect return of shoulder function after scapular fracture. Our results indicate that both 14A and 14B/C fractures have similarly high rates of healing and minimal functional impairment. Patients treated operatively typically had better shoulder functional outcomes. Current or past tobacco use or alcohol abuse was associated with worse functional outcome scores. This could suggest chemical, social, or a combination of these factors affecting muscular recovery and/or greater levels of baseline functional impairment. Finally, concomitant chest wall injuries may not negatively affect shoulder outcome, contrasting with data from previous studies on the more immediate post-injury period.

References

1. Dimitroulias A, Molinero KG, Krenk DE, Muffly MT, Altman DT, Altman GT. Outcomes of nonoperatively treated displaced scapular body fractures. Clin Orthop Relat Res. 2011;469(5):1459-1465. doi:10.1007/s11999-010-1670-4.

2. Voleti PB, Namdari S, Mehta S. Fractures of the scapula. Adv Orthop. 2012;2012:903850. doi:10.1155/2012/903850.

3. Cole PA, Gauger EM, Schroder LK. Management of scapular fractures. J Am Acad Orthop Surg. 2012;20(3):130-141. doi:10.5435/JAAOS-20-03-130.

4. Salimi J, Khaji A, Karbakhsh M, Saadat S, Eftekhar B. Scapular fracture: lower severity and mortality. Sao Paulo Med J. 2008;126(3):186-189. doi:10.1590/S1516-31802008000300009.

5. Anavian J, Gauger EM, Schroder LK, Wijdicks CA, Cole PA. Surgical and functional outcomes After operative management of complex and displaced intra-articular glenoid fractures. J Bone Joint Surg Am. 2012;94(7):645-653. doi:10.2106/JBJS.J.00896.

6. Brenneman FD, Redelmeier DA, Boulanger BR, McLellan BA, Culhane JP. Long-term outcomes in blunt trauma: who goes back to work? J Trauma. 1997;42(5):778-781. doi:10.1097/00005373-199705000-00004.

7. Schofer MD, Sehrt AC, Timmesfeld N, Störmer S, Kortmann HR. Fractures of the scapula: long-term results after conservative treatment. Arch Orthop Trauma Surg. 2009;129(11):1511-1519. doi:10.1007/s00402-009-0855-3.

8. Ada JR, Miller ME. Scapular fractures - analysis of 113 cases. Clin Orthop Relat Res. 1991:174-180.

9. Herrera DA, Anavian J, Tarkin IS, Armitage BA, Schroder LK, Cole PA. Delayed operative management of fractures of the scapula. J Bone Joint Surg Br. 2009;91(5):619-626. doi:10.1302/0301-620X.91B5.22158.

10. Jones CB, Sietsema DL. Analysis of operative versus nonoperative treatment of displaced scapular fractures. Clin Orthop Relat Res. 2011;469(12):3379-3389. doi:10.1007/s11999-011-2016-6.

11. Khallaf F, Mikami A, Al-Akkad M. The use of surgery in displaced scapular neck fractures. Med Princ Pract. 2006;15(6):443-448. doi:10.1159/000095491.

12. Adam FF. Surgical treatment of displaced fractures of the glenoid cavity. Int Orthop. 2002;26(3):150-153. doi:10.1007/s00264-002-0342-8.

13. Kavanagh BF, Bradway JK, Cofield RH. Open reduction and internal fixation of displaced intraarticular fractures of the glenoid fossa. J Bone Joint Surg Am. 1993;75(4):479-484.

14. Leung KS, Lam TP, Poon KM. Operative treatment of displaced intra-articular glenoid fractures. Injury. 1993;24(5):324-328. doi:10.1016/0020-1383(93)90056-C.

15. Mayo KA, Benirschke SK, Mast JW. Displaced fractures of the glenoid fossa. Results of open reduction and internal fixation. Clin Orthop Relat Res. 1998:122-130. doi:10.1097/00003086-199802000-00015.

16. Schandelmaier P, Blauth M, Schneider C, Krettek C. Fractures of the glenoid treated by operation. A 5-to 23-year follow-up of 22 cases. J Bone Joint Surg Br. 2002;84(2):173-177. doi:10.1302/0301-620X.84B2.12357.

17. Beaton D, Richards RR. Assessing the reliability and responsiveness of 5 shoulder questionnaires. J Shoulder Elbow Surg. 1998;7(6):565-572. doi:10.1016/S1058-2746(98)90002-7.

18. Michener LA, McClure PW, Sennett BJ. American shoulder and elbow surgeons standardized shoulder assessment form patient self-report section: reliability, validity, and responsiveness. J Shoulder Elbow Surg. 2002;11(6):587-594. doi:10.1067/mse.2002.127096.

19. Marsh JL, Slongo TF, Agel J, et al. Fracture and dislocation classification compendium-2007 - Orthopedic Trauma Association classification. Orthop Trauma. 2007;21:S1-S133.

20. Armstrong CP, Van der Spuy J. The fractured scapula: importance and management based on a series of 62 patients. Injury. 1984;15(5):324-329. doi:10.1016/0020-1383(84)90056-1.

21. McGahan JP, Rab GT, Dublin A. Fractures of the scapula. J Trauma. 1980;20(10):880-883. doi:10.1097/00005373-198010000-00011.

22. Thompson DA, Flynn TC, Miller PW, Fischer RP. The significance of scapular fractures. J Trauma. 1985;25(10):974-977. doi:10.1097/00005373-198510000-00008.

23. Zlowodzki M, Bhandari M, Zelle BA, Kregor PJ, Cole PA. Treatment of scapula fractures: systematic review of 520 fractures in 22 case series. J Orthop Trauma. 2006;20(3):230-233. doi:10.1097/00005131-200603000-00013.

24. Fini M, Giavaresi G, Salamanna F, et al. Harmful lifestyles on orthopedic implantation surgery: a descriptive review on alcohol and tobacco use. J Bone Miner Metab. 2011;29(6):633-644. doi:10.1007/s00774-011-0309-1.

25. Donigan JA, Fredericks DC, Nepola JV, Smucker JD. The effect of transdermal nicotine on fracture healing in a rabbit model. J Orthop Trauma. 2012;26(12):724-727. doi:10.1097/BOT.0b013e318270466f.

26. Harvey EJ, Agel J, Selznick HS, Chapman JR, Henley MB. Deleterious effect of smoking on healing of open tibia-shaft fractures. Am J Orthop. 2002;31(9):518-521.

27. Hernigou J, Schuind F. Smoking as a predictor of negative outcome in diaphyseal fracture healing. Int Orthop. 2013;37(5):883-887. doi:10.1007/s00264-013-1809-5.

28. Hoogendoorn JM, van der Werken C. The adverse effects of smoking on healing of open tibial fractures. Ned Tijdschr Geneeskd. 2002;146(35):1640-1644.

29. Kyrö A, Usenius JP, Aarnio M, Kunnamo I, Avikainen V. Are smokers a risk group for delayed healing of tibial shaft fractures? Ann Chir Gynaecol. 1993;82(4):254-262.

30. Farley JR, Fitzsimmons R, Taylor AK, Jorch UM, Lau KH. Direct effects of ethanol on bone resorption and formation in vitro. Arch Biochem Biophys. 1985;238(1):305-314. doi:10.1016/0003-9861(85)90169-9.

31. Turner RT. Skeletal response to alcohol. Alcoholism Clin Exp Res. 2000;24(11):1693-1701. doi:10.1111/j.1530-0277.2000.tb01971.x.

32. MacKenzie EJ, Morris JA, Jurkovich GJ, et al. Return to work following injury: the role of economic, social, and job-related factors. Am J Public Health. 1998;88(11):1630-1637. doi:10.2105/AJPH.88.11.1630.

33. Schnyder U, Moergeli H, Klaghofer R, Sensky T, Buchi S. Does patient cognition predict time off from work after life-threatening accidents? Am J Psychiatry. 2003;160(11):2025-2031. doi:10.1176/appi.ajp.160.11.2025.

34. Soberg HL, Finset A, Bautz-Holter E, Sandvik L, Roise O. Return to work after severe multiple injuries: A multidimensional approach on status 1 and 2 years postinjury. J Trauma. 2007;62(2):471-481. doi:10.1097/TA.0b013e31802e95f4.

35. Soberg HL, Roise O, Bautz-Holter E, Finset A. Returning to work after severe multiple injuries: multidimensional functioning and the trajectory from injury to work at 5 years. J Trauma. 2011;71(2):425-434. doi:10.1097/TA.0b013e3181eff54f.

References

1. Dimitroulias A, Molinero KG, Krenk DE, Muffly MT, Altman DT, Altman GT. Outcomes of nonoperatively treated displaced scapular body fractures. Clin Orthop Relat Res. 2011;469(5):1459-1465. doi:10.1007/s11999-010-1670-4.

2. Voleti PB, Namdari S, Mehta S. Fractures of the scapula. Adv Orthop. 2012;2012:903850. doi:10.1155/2012/903850.

3. Cole PA, Gauger EM, Schroder LK. Management of scapular fractures. J Am Acad Orthop Surg. 2012;20(3):130-141. doi:10.5435/JAAOS-20-03-130.

4. Salimi J, Khaji A, Karbakhsh M, Saadat S, Eftekhar B. Scapular fracture: lower severity and mortality. Sao Paulo Med J. 2008;126(3):186-189. doi:10.1590/S1516-31802008000300009.

5. Anavian J, Gauger EM, Schroder LK, Wijdicks CA, Cole PA. Surgical and functional outcomes After operative management of complex and displaced intra-articular glenoid fractures. J Bone Joint Surg Am. 2012;94(7):645-653. doi:10.2106/JBJS.J.00896.

6. Brenneman FD, Redelmeier DA, Boulanger BR, McLellan BA, Culhane JP. Long-term outcomes in blunt trauma: who goes back to work? J Trauma. 1997;42(5):778-781. doi:10.1097/00005373-199705000-00004.

7. Schofer MD, Sehrt AC, Timmesfeld N, Störmer S, Kortmann HR. Fractures of the scapula: long-term results after conservative treatment. Arch Orthop Trauma Surg. 2009;129(11):1511-1519. doi:10.1007/s00402-009-0855-3.

8. Ada JR, Miller ME. Scapular fractures - analysis of 113 cases. Clin Orthop Relat Res. 1991:174-180.

9. Herrera DA, Anavian J, Tarkin IS, Armitage BA, Schroder LK, Cole PA. Delayed operative management of fractures of the scapula. J Bone Joint Surg Br. 2009;91(5):619-626. doi:10.1302/0301-620X.91B5.22158.

10. Jones CB, Sietsema DL. Analysis of operative versus nonoperative treatment of displaced scapular fractures. Clin Orthop Relat Res. 2011;469(12):3379-3389. doi:10.1007/s11999-011-2016-6.

11. Khallaf F, Mikami A, Al-Akkad M. The use of surgery in displaced scapular neck fractures. Med Princ Pract. 2006;15(6):443-448. doi:10.1159/000095491.

12. Adam FF. Surgical treatment of displaced fractures of the glenoid cavity. Int Orthop. 2002;26(3):150-153. doi:10.1007/s00264-002-0342-8.

13. Kavanagh BF, Bradway JK, Cofield RH. Open reduction and internal fixation of displaced intraarticular fractures of the glenoid fossa. J Bone Joint Surg Am. 1993;75(4):479-484.

14. Leung KS, Lam TP, Poon KM. Operative treatment of displaced intra-articular glenoid fractures. Injury. 1993;24(5):324-328. doi:10.1016/0020-1383(93)90056-C.

15. Mayo KA, Benirschke SK, Mast JW. Displaced fractures of the glenoid fossa. Results of open reduction and internal fixation. Clin Orthop Relat Res. 1998:122-130. doi:10.1097/00003086-199802000-00015.

16. Schandelmaier P, Blauth M, Schneider C, Krettek C. Fractures of the glenoid treated by operation. A 5-to 23-year follow-up of 22 cases. J Bone Joint Surg Br. 2002;84(2):173-177. doi:10.1302/0301-620X.84B2.12357.

17. Beaton D, Richards RR. Assessing the reliability and responsiveness of 5 shoulder questionnaires. J Shoulder Elbow Surg. 1998;7(6):565-572. doi:10.1016/S1058-2746(98)90002-7.

18. Michener LA, McClure PW, Sennett BJ. American shoulder and elbow surgeons standardized shoulder assessment form patient self-report section: reliability, validity, and responsiveness. J Shoulder Elbow Surg. 2002;11(6):587-594. doi:10.1067/mse.2002.127096.

19. Marsh JL, Slongo TF, Agel J, et al. Fracture and dislocation classification compendium-2007 - Orthopedic Trauma Association classification. Orthop Trauma. 2007;21:S1-S133.

20. Armstrong CP, Van der Spuy J. The fractured scapula: importance and management based on a series of 62 patients. Injury. 1984;15(5):324-329. doi:10.1016/0020-1383(84)90056-1.

21. McGahan JP, Rab GT, Dublin A. Fractures of the scapula. J Trauma. 1980;20(10):880-883. doi:10.1097/00005373-198010000-00011.

22. Thompson DA, Flynn TC, Miller PW, Fischer RP. The significance of scapular fractures. J Trauma. 1985;25(10):974-977. doi:10.1097/00005373-198510000-00008.

23. Zlowodzki M, Bhandari M, Zelle BA, Kregor PJ, Cole PA. Treatment of scapula fractures: systematic review of 520 fractures in 22 case series. J Orthop Trauma. 2006;20(3):230-233. doi:10.1097/00005131-200603000-00013.

24. Fini M, Giavaresi G, Salamanna F, et al. Harmful lifestyles on orthopedic implantation surgery: a descriptive review on alcohol and tobacco use. J Bone Miner Metab. 2011;29(6):633-644. doi:10.1007/s00774-011-0309-1.

25. Donigan JA, Fredericks DC, Nepola JV, Smucker JD. The effect of transdermal nicotine on fracture healing in a rabbit model. J Orthop Trauma. 2012;26(12):724-727. doi:10.1097/BOT.0b013e318270466f.

26. Harvey EJ, Agel J, Selznick HS, Chapman JR, Henley MB. Deleterious effect of smoking on healing of open tibia-shaft fractures. Am J Orthop. 2002;31(9):518-521.

27. Hernigou J, Schuind F. Smoking as a predictor of negative outcome in diaphyseal fracture healing. Int Orthop. 2013;37(5):883-887. doi:10.1007/s00264-013-1809-5.

28. Hoogendoorn JM, van der Werken C. The adverse effects of smoking on healing of open tibial fractures. Ned Tijdschr Geneeskd. 2002;146(35):1640-1644.

29. Kyrö A, Usenius JP, Aarnio M, Kunnamo I, Avikainen V. Are smokers a risk group for delayed healing of tibial shaft fractures? Ann Chir Gynaecol. 1993;82(4):254-262.

30. Farley JR, Fitzsimmons R, Taylor AK, Jorch UM, Lau KH. Direct effects of ethanol on bone resorption and formation in vitro. Arch Biochem Biophys. 1985;238(1):305-314. doi:10.1016/0003-9861(85)90169-9.

31. Turner RT. Skeletal response to alcohol. Alcoholism Clin Exp Res. 2000;24(11):1693-1701. doi:10.1111/j.1530-0277.2000.tb01971.x.

32. MacKenzie EJ, Morris JA, Jurkovich GJ, et al. Return to work following injury: the role of economic, social, and job-related factors. Am J Public Health. 1998;88(11):1630-1637. doi:10.2105/AJPH.88.11.1630.

33. Schnyder U, Moergeli H, Klaghofer R, Sensky T, Buchi S. Does patient cognition predict time off from work after life-threatening accidents? Am J Psychiatry. 2003;160(11):2025-2031. doi:10.1176/appi.ajp.160.11.2025.

34. Soberg HL, Finset A, Bautz-Holter E, Sandvik L, Roise O. Return to work after severe multiple injuries: A multidimensional approach on status 1 and 2 years postinjury. J Trauma. 2007;62(2):471-481. doi:10.1097/TA.0b013e31802e95f4.

35. Soberg HL, Roise O, Bautz-Holter E, Finset A. Returning to work after severe multiple injuries: multidimensional functioning and the trajectory from injury to work at 5 years. J Trauma. 2011;71(2):425-434. doi:10.1097/TA.0b013e3181eff54f.

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TAKE-HOME POINTS

  • The majority of patients with scapula fractures are multiply-injured.
  • Despite being multiply-injured, most heal with minimal functional shoulder impairment.
  • While concomitant injuries do not appear to affect shoulder function scores, tobacco use and alcohol abuse are associated with worse outcomes after scapula fractures.
  • Most scapula fractures can be treated successfully without surgery.
  • Although patients had higher average function scores after open reduction and internal fixation, further research should be done to define indications for fixation.
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September 2018 Question 2

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Q2. Correct Answer: D 
 
Rationale  
This patient is on nadolol, a nonselective beta-blocker, for the primary prophylaxis of large esophageal varices. The dose of nonselective beta-blockers should be increased in a stepwise manner until the maximum tolerated dose or until a resting heart rate of 50-55/min is met. Since this patient is already at target heart rate, there is no indication to increase the dose. Repeat endoscopy is not indicated to assess change in size of varices once initiated on nonselective beta-blockers and at target heart rate. The choice between beta-blockers or endoscopic variceal ligation depends on local resources and expertise, patient preference and characteristics, side effects, and contraindications. Carvedilol, a nonselective beta-blocker with vasodilatory properties, is a promising alternative therapy that deserves further evaluation. However, given that nadolol has achieved target heart rate and patient is tolerating it, there is no indication to change management. 
 
Reference  
1. Garcia-Tsao G., Sanyal A.J., Grace N.D., Carey W.. Prevention and management of gastroesophageal varices and variceal hemorrhage in cirrhosis. Hepatology. 2007;46(3):922-38.  
2. Tripathi D., Ferguson J.W., Kochar N., et al. Randomized controlled trial of carvedilol versus variceal band ligation for the prevention of the first variceal bleed. Hepatology. 2009;50(3):825-33. 
 
ginews@gastro.org

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Q2. Correct Answer: D 
 
Rationale  
This patient is on nadolol, a nonselective beta-blocker, for the primary prophylaxis of large esophageal varices. The dose of nonselective beta-blockers should be increased in a stepwise manner until the maximum tolerated dose or until a resting heart rate of 50-55/min is met. Since this patient is already at target heart rate, there is no indication to increase the dose. Repeat endoscopy is not indicated to assess change in size of varices once initiated on nonselective beta-blockers and at target heart rate. The choice between beta-blockers or endoscopic variceal ligation depends on local resources and expertise, patient preference and characteristics, side effects, and contraindications. Carvedilol, a nonselective beta-blocker with vasodilatory properties, is a promising alternative therapy that deserves further evaluation. However, given that nadolol has achieved target heart rate and patient is tolerating it, there is no indication to change management. 
 
Reference  
1. Garcia-Tsao G., Sanyal A.J., Grace N.D., Carey W.. Prevention and management of gastroesophageal varices and variceal hemorrhage in cirrhosis. Hepatology. 2007;46(3):922-38.  
2. Tripathi D., Ferguson J.W., Kochar N., et al. Randomized controlled trial of carvedilol versus variceal band ligation for the prevention of the first variceal bleed. Hepatology. 2009;50(3):825-33. 
 
ginews@gastro.org

Q2. Correct Answer: D 
 
Rationale  
This patient is on nadolol, a nonselective beta-blocker, for the primary prophylaxis of large esophageal varices. The dose of nonselective beta-blockers should be increased in a stepwise manner until the maximum tolerated dose or until a resting heart rate of 50-55/min is met. Since this patient is already at target heart rate, there is no indication to increase the dose. Repeat endoscopy is not indicated to assess change in size of varices once initiated on nonselective beta-blockers and at target heart rate. The choice between beta-blockers or endoscopic variceal ligation depends on local resources and expertise, patient preference and characteristics, side effects, and contraindications. Carvedilol, a nonselective beta-blocker with vasodilatory properties, is a promising alternative therapy that deserves further evaluation. However, given that nadolol has achieved target heart rate and patient is tolerating it, there is no indication to change management. 
 
Reference  
1. Garcia-Tsao G., Sanyal A.J., Grace N.D., Carey W.. Prevention and management of gastroesophageal varices and variceal hemorrhage in cirrhosis. Hepatology. 2007;46(3):922-38.  
2. Tripathi D., Ferguson J.W., Kochar N., et al. Randomized controlled trial of carvedilol versus variceal band ligation for the prevention of the first variceal bleed. Hepatology. 2009;50(3):825-33. 
 
ginews@gastro.org

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Q2. A 63-year-old man presents to your clinic for follow-up of his known cirrhosis. He had an upper endoscopy 1 month ago, where he was found to have large varices with no high-risk stigmata. The patient was placed on nadolol 20 mg daily, and is tolerating it without side effects. On physical exam, he has no clinical ascites. His vitals are as  follows: temperature, 98.4º F; blood pressure, 114/75 mm Hg; heart rate 55 beats/minute. 
 
What is the next most appropriate step to manage these varices?

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September 2018 Question 1

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Q1. Correct Answer: D 
 
Rationale
 
There is a risk of perineal trauma with vaginal delivery, and therefore, patients with active perianal Crohn's disease should undergo cesarean delivery to avoid exacerbation of disease. Patients without a history of perianal disease or those with inactive perianal disease have a low rate of relapse, and cesarean delivery is not warranted. Aside from patients with active perineal disease, the mode of delivery should be left to the discretion of the obstetrician. None of the other choices above, including ileal pouch-anal anastomosis, justify the decision to perform cesarean section.

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Q1. Correct Answer: D 
 
Rationale
 
There is a risk of perineal trauma with vaginal delivery, and therefore, patients with active perianal Crohn's disease should undergo cesarean delivery to avoid exacerbation of disease. Patients without a history of perianal disease or those with inactive perianal disease have a low rate of relapse, and cesarean delivery is not warranted. Aside from patients with active perineal disease, the mode of delivery should be left to the discretion of the obstetrician. None of the other choices above, including ileal pouch-anal anastomosis, justify the decision to perform cesarean section.

Q1. Correct Answer: D 
 
Rationale
 
There is a risk of perineal trauma with vaginal delivery, and therefore, patients with active perianal Crohn's disease should undergo cesarean delivery to avoid exacerbation of disease. Patients without a history of perianal disease or those with inactive perianal disease have a low rate of relapse, and cesarean delivery is not warranted. Aside from patients with active perineal disease, the mode of delivery should be left to the discretion of the obstetrician. None of the other choices above, including ileal pouch-anal anastomosis, justify the decision to perform cesarean section.

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A 28-year-old woman with a history of Crohn's disease is 29 weeks pregnant. She has had an ileocolonic resection and continues to have a small enterocutaneous fistula. She is otherwise doing well, and is maintained on infliximab therapy. She is asking about the mode of delivery of her baby. She wants to know if she should have an elective cesarean delivery. 
 
In which of the following clinical scenarios would a cesarean delivery be recommended?

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What's your diagnosis? - September 2018

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Endovascular walled-off pancreatic necrosis complicating a pancreatic duct-portal vein fistula 


Pancreatic fistula occurs primarily as a result of abdominal trauma, pancreatic surgery, or disruption of the pancreatic duct. In the vast majority of the cases, the latter is encountered in the context of chronic pancreatitis, and results in chronic pancreatic or peripancreatic fluid or necrotic collections. Rarely, such ductal disruption leads to a direct communication between the ruptured duct and the portal vein lumen. Such pancreas-portal venous fistulas are extremely rare, with less than 20 cases reported in published literature.1 The location of the fistula is within the head of the pancreas in most cases, and it is associated with intrapancreatic necrotic collection in close proximity to the portal vein, as in the present case. The intravascular flow of pancreatic enzymes leads to local and progressively extensive portal vein thrombosis. Importantly, most portal vein thromboses in the context of acute or chronic pancreatitis do not result from pancreas-portal venous fistula, and are explained by local vascular compression by the inflammatory pancreatic head, and acquired coagulation abnormalities owing to the pancreatitis. In case of fistula, the resulting high blood level of the pancreatic enzymes may lead to a range of clinical presentations, from vague abdominal pain to disseminated fat necrosis. Painful erythematous lesions on the lower extremities and arthritis have also been described. The present case is an exceptional complication of pancreatic duct-portal vein fistula, with endovascular organization of walled-off pancreatic necrosis.2 The direct visualization of the fistula is difficult, endoscopic retrograde or, more frequently, magnetic resonance cholangiopancreatography being the most useful technique.3 
Ultrasound imaging can be useful by showing the heterogeneous yet hypoechoic content of the portal venous system. Percutaneous transhepatic puncture has also been described, and is performed, as in our case, to obtain fluid sample and to perform evacuation of fluid/drainage if necessary. Percutaneous puncture may also provide precise extension of the portal venous invasion. The management of patients with pancreatic-portal vein fistula is poorly codified and relies on individual clinical and imaging analysis. Early surgical intervention has been described in patients with disseminated fat necrosis to limit morbidity and prevent mortality. Later in the evolution of the disease, surgery can be performed if the fistula remains active to alleviate the patient's symptoms and prevent future complications. Finally, conservative treatment can be proposed in selected patients with dried up fistula, as in the present report. 
 
References 
1. Brown A., Malden E., Kugelmas M., et al. Diagnosis of pancreatic duct-portal vein fistula; A case report and review of the literature. J Radiol Case Rep. 2014;8:31-8. 
2. Banks P.A., Bollen T.L., Dervenis C., et al. Classification of acute pancreatitis-2012: Revision of the Atlanta classification and definitions by international consensus. Gut. 2013;62:102-11. 
3. Yoon S.E., Lee Y.H., Yoon K.H., et al. Spontaneous pancreatic pseudocyst-portal vein fistula presenting with pancreatic ascites: Strength of MR cholangiopancreatography. Br J Radiol. 2008;81:e13-6. 
 

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Endovascular walled-off pancreatic necrosis complicating a pancreatic duct-portal vein fistula 


Pancreatic fistula occurs primarily as a result of abdominal trauma, pancreatic surgery, or disruption of the pancreatic duct. In the vast majority of the cases, the latter is encountered in the context of chronic pancreatitis, and results in chronic pancreatic or peripancreatic fluid or necrotic collections. Rarely, such ductal disruption leads to a direct communication between the ruptured duct and the portal vein lumen. Such pancreas-portal venous fistulas are extremely rare, with less than 20 cases reported in published literature.1 The location of the fistula is within the head of the pancreas in most cases, and it is associated with intrapancreatic necrotic collection in close proximity to the portal vein, as in the present case. The intravascular flow of pancreatic enzymes leads to local and progressively extensive portal vein thrombosis. Importantly, most portal vein thromboses in the context of acute or chronic pancreatitis do not result from pancreas-portal venous fistula, and are explained by local vascular compression by the inflammatory pancreatic head, and acquired coagulation abnormalities owing to the pancreatitis. In case of fistula, the resulting high blood level of the pancreatic enzymes may lead to a range of clinical presentations, from vague abdominal pain to disseminated fat necrosis. Painful erythematous lesions on the lower extremities and arthritis have also been described. The present case is an exceptional complication of pancreatic duct-portal vein fistula, with endovascular organization of walled-off pancreatic necrosis.2 The direct visualization of the fistula is difficult, endoscopic retrograde or, more frequently, magnetic resonance cholangiopancreatography being the most useful technique.3 
Ultrasound imaging can be useful by showing the heterogeneous yet hypoechoic content of the portal venous system. Percutaneous transhepatic puncture has also been described, and is performed, as in our case, to obtain fluid sample and to perform evacuation of fluid/drainage if necessary. Percutaneous puncture may also provide precise extension of the portal venous invasion. The management of patients with pancreatic-portal vein fistula is poorly codified and relies on individual clinical and imaging analysis. Early surgical intervention has been described in patients with disseminated fat necrosis to limit morbidity and prevent mortality. Later in the evolution of the disease, surgery can be performed if the fistula remains active to alleviate the patient's symptoms and prevent future complications. Finally, conservative treatment can be proposed in selected patients with dried up fistula, as in the present report. 
 
References 
1. Brown A., Malden E., Kugelmas M., et al. Diagnosis of pancreatic duct-portal vein fistula; A case report and review of the literature. J Radiol Case Rep. 2014;8:31-8. 
2. Banks P.A., Bollen T.L., Dervenis C., et al. Classification of acute pancreatitis-2012: Revision of the Atlanta classification and definitions by international consensus. Gut. 2013;62:102-11. 
3. Yoon S.E., Lee Y.H., Yoon K.H., et al. Spontaneous pancreatic pseudocyst-portal vein fistula presenting with pancreatic ascites: Strength of MR cholangiopancreatography. Br J Radiol. 2008;81:e13-6. 
 

Endovascular walled-off pancreatic necrosis complicating a pancreatic duct-portal vein fistula 


Pancreatic fistula occurs primarily as a result of abdominal trauma, pancreatic surgery, or disruption of the pancreatic duct. In the vast majority of the cases, the latter is encountered in the context of chronic pancreatitis, and results in chronic pancreatic or peripancreatic fluid or necrotic collections. Rarely, such ductal disruption leads to a direct communication between the ruptured duct and the portal vein lumen. Such pancreas-portal venous fistulas are extremely rare, with less than 20 cases reported in published literature.1 The location of the fistula is within the head of the pancreas in most cases, and it is associated with intrapancreatic necrotic collection in close proximity to the portal vein, as in the present case. The intravascular flow of pancreatic enzymes leads to local and progressively extensive portal vein thrombosis. Importantly, most portal vein thromboses in the context of acute or chronic pancreatitis do not result from pancreas-portal venous fistula, and are explained by local vascular compression by the inflammatory pancreatic head, and acquired coagulation abnormalities owing to the pancreatitis. In case of fistula, the resulting high blood level of the pancreatic enzymes may lead to a range of clinical presentations, from vague abdominal pain to disseminated fat necrosis. Painful erythematous lesions on the lower extremities and arthritis have also been described. The present case is an exceptional complication of pancreatic duct-portal vein fistula, with endovascular organization of walled-off pancreatic necrosis.2 The direct visualization of the fistula is difficult, endoscopic retrograde or, more frequently, magnetic resonance cholangiopancreatography being the most useful technique.3 
Ultrasound imaging can be useful by showing the heterogeneous yet hypoechoic content of the portal venous system. Percutaneous transhepatic puncture has also been described, and is performed, as in our case, to obtain fluid sample and to perform evacuation of fluid/drainage if necessary. Percutaneous puncture may also provide precise extension of the portal venous invasion. The management of patients with pancreatic-portal vein fistula is poorly codified and relies on individual clinical and imaging analysis. Early surgical intervention has been described in patients with disseminated fat necrosis to limit morbidity and prevent mortality. Later in the evolution of the disease, surgery can be performed if the fistula remains active to alleviate the patient's symptoms and prevent future complications. Finally, conservative treatment can be proposed in selected patients with dried up fistula, as in the present report. 
 
References 
1. Brown A., Malden E., Kugelmas M., et al. Diagnosis of pancreatic duct-portal vein fistula; A case report and review of the literature. J Radiol Case Rep. 2014;8:31-8. 
2. Banks P.A., Bollen T.L., Dervenis C., et al. Classification of acute pancreatitis-2012: Revision of the Atlanta classification and definitions by international consensus. Gut. 2013;62:102-11. 
3. Yoon S.E., Lee Y.H., Yoon K.H., et al. Spontaneous pancreatic pseudocyst-portal vein fistula presenting with pancreatic ascites: Strength of MR cholangiopancreatography. Br J Radiol. 2008;81:e13-6. 
 

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A 51-year-old man with a history of chronic pancreatitis presented with fatigue, weight loss, and right abdominal pain. He reported excessive alcohol consumption (> 200 g of alcohol per day during the past 35 years), active tobacco smoking (70 pack-years), and diabetes mellitus treated by insulin therapy. He had suffered from recurrent epigastric pain, left unexplored, for several weeks. Abdominal examination revealed no anomaly. Laboratory test results showed serum lipase 146 U/L (normal, < 78), alkaline phosphatase 477 U/L (normal, < 130), gamma-glutamyl transpeptidase 503 U/L (normal, < 55), albumin 23 g/L (normal, 40-49), and prealbumin 0.11 g/L (normal, 0.22-0.39).  

 

 

 

 

Contrast-enhanced computed tomography scanning showed features of chronic pancreatitis including pancreatic atrophy, parenchymal calcifications, marked peripancreatic fat stranding, and cephalic hypoattenuating well-delineated collection (Figure A).

 

 

 

 

There was a chronic obstruction of the portal vein that was surrounded by numerous tortuous venous channels (Figure B). The entire intrahepatic portal branches were occluded, the right and left portal branches showed marked dilatation with a lumen filled with fluid-like material (mean density, 18 Hounsfield units), and no contrast uptake (Figure C).

 

 

 

 

Portal vein walls were thickened and showed contrast enhancement (Figure D). The superior mesenteric vein was also thrombosed, whereas the splenic vein remained patent. Bile ducts were unnoticeable.

 

 

 

 

Ultrasound-guided transhepatic puncture of the left portal branch was performed and allowed for the aspiration of a brown fluid. Analysis showed lipase 89,990 UI/dL and amylase 43,125 UI/dL. The patient was treated by parenteral nutrition, anticoagulation therapy, and somatostatin analogues. The patient is doing well at the 6-month follow-up.

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