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Vaping-linked lung injury cases near 1,900
according to the latest update provided by the Centers for Disease Control and Prevention. Thirty-seven deaths have been confirmed.
Deaths have occurred in 24 states and the District of Columbia: Alabama, California (3), Connecticut, Delaware, Florida, Georgia (3), Illinois (2), Indiana (3), Kansas (2), Massachusetts, Michigan, Minnesota (3), Mississippi, Missouri, Montana, Nebraska, New Jersey, New York, Oregon (2), Pennsylvania, Tennessee (2), Texas, Utah, and Virginia. As on Oct. 28, the median age of deceased patients was 49 years and ranged from 17 to 75 years.
The CDC is now doing additional testing on available samples for chemical in the bronchoalveolar lavage fluid, blood, or urine, as well as lung biopsy or autopsy specimens. It also is validating methods for aerosol emission testing of case-associated product samples from vaping products and e-liquids.
For more information and resources visit For the Public, For Healthcare Providers, and For State and Local Health Departments pages, as well as the CDC’s Publications and Resources page.
according to the latest update provided by the Centers for Disease Control and Prevention. Thirty-seven deaths have been confirmed.
Deaths have occurred in 24 states and the District of Columbia: Alabama, California (3), Connecticut, Delaware, Florida, Georgia (3), Illinois (2), Indiana (3), Kansas (2), Massachusetts, Michigan, Minnesota (3), Mississippi, Missouri, Montana, Nebraska, New Jersey, New York, Oregon (2), Pennsylvania, Tennessee (2), Texas, Utah, and Virginia. As on Oct. 28, the median age of deceased patients was 49 years and ranged from 17 to 75 years.
The CDC is now doing additional testing on available samples for chemical in the bronchoalveolar lavage fluid, blood, or urine, as well as lung biopsy or autopsy specimens. It also is validating methods for aerosol emission testing of case-associated product samples from vaping products and e-liquids.
For more information and resources visit For the Public, For Healthcare Providers, and For State and Local Health Departments pages, as well as the CDC’s Publications and Resources page.
according to the latest update provided by the Centers for Disease Control and Prevention. Thirty-seven deaths have been confirmed.
Deaths have occurred in 24 states and the District of Columbia: Alabama, California (3), Connecticut, Delaware, Florida, Georgia (3), Illinois (2), Indiana (3), Kansas (2), Massachusetts, Michigan, Minnesota (3), Mississippi, Missouri, Montana, Nebraska, New Jersey, New York, Oregon (2), Pennsylvania, Tennessee (2), Texas, Utah, and Virginia. As on Oct. 28, the median age of deceased patients was 49 years and ranged from 17 to 75 years.
The CDC is now doing additional testing on available samples for chemical in the bronchoalveolar lavage fluid, blood, or urine, as well as lung biopsy or autopsy specimens. It also is validating methods for aerosol emission testing of case-associated product samples from vaping products and e-liquids.
For more information and resources visit For the Public, For Healthcare Providers, and For State and Local Health Departments pages, as well as the CDC’s Publications and Resources page.
Macitentan produces similar results in PAH-SSc and IPAH/HPAH
NEW ORLEANS – Real-world data support the use of macitentan to treat pulmonary arterial hypertension (PAH) associated with connective tissue disease, according to a speaker at the annual meeting of the American College of Chest Physicians.
Outcomes of macitentan (Opsumit) treatment were similar in patients who had PAH associated with systemic sclerosis (PAH-SSc) and patients who had idiopathic PAH (IPAH) or heritable PAH (HPAH), Vallerie McLaughlin, MD, of the University of Michigan, Ann Arbor, said at the meeting.
“Within the limits of a real-world registry, these data add to the growing body of evidence supporting the use of macitentan for treatment in patients with CTD [connective tissue disease],” Dr. McLaughlin said.
She and her colleagues evaluated data from the prospective OPUS registry (NCT02126943) and the retrospective OrPHeUS study (NCT03197688), both of which included patients who were newly started on macitentan.
Dr. McLaughlin presented data on 2,311 patients with IPAH/HPAH and 668 patients with PAH-SSc. She also presented data on patients with PAH-systemic lupus erythematosus and PAH-mixed CTD, but numbers in these groups were small, and outcomes were similar to those in the PAH-SSc group.
Demographic and disease characteristics at the start of macitentan were similar between the IPAH/HPAH and PAH-SSc groups. The median age was 64 years in both groups. The median time from PAH diagnosis was 7.6 months in the IPAH/HPAH group and 8.5 months in the PAH-SSc group.
The median duration of macitentan exposure was 13.4 months in the IPAH/HPAH group and 14.4 months in the PAH-SSc group. The proportion of patients receiving macitentan in combination with other therapies (double or triple combinations) increased from baseline to 6 months in both groups.
Hepatic adverse events occurred in 7.4% of IPAH/HPAH patients and 7.9% of PAH-SSc patients. The most common adverse events among the IPAH/HPAH and PAH-SSc groups in the OPUS registry alone were dyspnea (19% and 26.1%, respectively), peripheral edema (9.8% and 12.4%), fatigue (6.8% and 11.7%), anemia (6.7% and 11.7%), headache (10.2% and 11%), and dizziness (6.7% and 10.7%).
About 39% of patients in both groups discontinued macitentan. Similar proportions in each group discontinued because of adverse events (17% in the IPAH/HPAH group and 18.3% in the PAH-SSc group) and hepatic adverse events (0.2% and 0.7%, respectively).
The proportion of patients with at least one hospitalization was 36.2% in the IPAH/HPAH group and 40.1% in the PAH-SSc group.
The 12-month Kaplan-Meier survival estimate was 92.9% in the IPAH/HPAH group and 91.3% in the PAH-SSc group. The 24-month estimated survival rate was 85.6% and 82.1%, respectively.
The OPUS registry and OrPHeUS study are sponsored by Actelion. Dr. McLaughlin disclosed relationships with Actelion, Acceleron, Bayer, Caremark, CiVi Biopharma, Reata, Sonovie, and United Therapeutics.
SOURCE: McLaughlin V et al. CHEST 2019. Abstract, doi: 10.1016/j.chest.2019.08.827.
NEW ORLEANS – Real-world data support the use of macitentan to treat pulmonary arterial hypertension (PAH) associated with connective tissue disease, according to a speaker at the annual meeting of the American College of Chest Physicians.
Outcomes of macitentan (Opsumit) treatment were similar in patients who had PAH associated with systemic sclerosis (PAH-SSc) and patients who had idiopathic PAH (IPAH) or heritable PAH (HPAH), Vallerie McLaughlin, MD, of the University of Michigan, Ann Arbor, said at the meeting.
“Within the limits of a real-world registry, these data add to the growing body of evidence supporting the use of macitentan for treatment in patients with CTD [connective tissue disease],” Dr. McLaughlin said.
She and her colleagues evaluated data from the prospective OPUS registry (NCT02126943) and the retrospective OrPHeUS study (NCT03197688), both of which included patients who were newly started on macitentan.
Dr. McLaughlin presented data on 2,311 patients with IPAH/HPAH and 668 patients with PAH-SSc. She also presented data on patients with PAH-systemic lupus erythematosus and PAH-mixed CTD, but numbers in these groups were small, and outcomes were similar to those in the PAH-SSc group.
Demographic and disease characteristics at the start of macitentan were similar between the IPAH/HPAH and PAH-SSc groups. The median age was 64 years in both groups. The median time from PAH diagnosis was 7.6 months in the IPAH/HPAH group and 8.5 months in the PAH-SSc group.
The median duration of macitentan exposure was 13.4 months in the IPAH/HPAH group and 14.4 months in the PAH-SSc group. The proportion of patients receiving macitentan in combination with other therapies (double or triple combinations) increased from baseline to 6 months in both groups.
Hepatic adverse events occurred in 7.4% of IPAH/HPAH patients and 7.9% of PAH-SSc patients. The most common adverse events among the IPAH/HPAH and PAH-SSc groups in the OPUS registry alone were dyspnea (19% and 26.1%, respectively), peripheral edema (9.8% and 12.4%), fatigue (6.8% and 11.7%), anemia (6.7% and 11.7%), headache (10.2% and 11%), and dizziness (6.7% and 10.7%).
About 39% of patients in both groups discontinued macitentan. Similar proportions in each group discontinued because of adverse events (17% in the IPAH/HPAH group and 18.3% in the PAH-SSc group) and hepatic adverse events (0.2% and 0.7%, respectively).
The proportion of patients with at least one hospitalization was 36.2% in the IPAH/HPAH group and 40.1% in the PAH-SSc group.
The 12-month Kaplan-Meier survival estimate was 92.9% in the IPAH/HPAH group and 91.3% in the PAH-SSc group. The 24-month estimated survival rate was 85.6% and 82.1%, respectively.
The OPUS registry and OrPHeUS study are sponsored by Actelion. Dr. McLaughlin disclosed relationships with Actelion, Acceleron, Bayer, Caremark, CiVi Biopharma, Reata, Sonovie, and United Therapeutics.
SOURCE: McLaughlin V et al. CHEST 2019. Abstract, doi: 10.1016/j.chest.2019.08.827.
NEW ORLEANS – Real-world data support the use of macitentan to treat pulmonary arterial hypertension (PAH) associated with connective tissue disease, according to a speaker at the annual meeting of the American College of Chest Physicians.
Outcomes of macitentan (Opsumit) treatment were similar in patients who had PAH associated with systemic sclerosis (PAH-SSc) and patients who had idiopathic PAH (IPAH) or heritable PAH (HPAH), Vallerie McLaughlin, MD, of the University of Michigan, Ann Arbor, said at the meeting.
“Within the limits of a real-world registry, these data add to the growing body of evidence supporting the use of macitentan for treatment in patients with CTD [connective tissue disease],” Dr. McLaughlin said.
She and her colleagues evaluated data from the prospective OPUS registry (NCT02126943) and the retrospective OrPHeUS study (NCT03197688), both of which included patients who were newly started on macitentan.
Dr. McLaughlin presented data on 2,311 patients with IPAH/HPAH and 668 patients with PAH-SSc. She also presented data on patients with PAH-systemic lupus erythematosus and PAH-mixed CTD, but numbers in these groups were small, and outcomes were similar to those in the PAH-SSc group.
Demographic and disease characteristics at the start of macitentan were similar between the IPAH/HPAH and PAH-SSc groups. The median age was 64 years in both groups. The median time from PAH diagnosis was 7.6 months in the IPAH/HPAH group and 8.5 months in the PAH-SSc group.
The median duration of macitentan exposure was 13.4 months in the IPAH/HPAH group and 14.4 months in the PAH-SSc group. The proportion of patients receiving macitentan in combination with other therapies (double or triple combinations) increased from baseline to 6 months in both groups.
Hepatic adverse events occurred in 7.4% of IPAH/HPAH patients and 7.9% of PAH-SSc patients. The most common adverse events among the IPAH/HPAH and PAH-SSc groups in the OPUS registry alone were dyspnea (19% and 26.1%, respectively), peripheral edema (9.8% and 12.4%), fatigue (6.8% and 11.7%), anemia (6.7% and 11.7%), headache (10.2% and 11%), and dizziness (6.7% and 10.7%).
About 39% of patients in both groups discontinued macitentan. Similar proportions in each group discontinued because of adverse events (17% in the IPAH/HPAH group and 18.3% in the PAH-SSc group) and hepatic adverse events (0.2% and 0.7%, respectively).
The proportion of patients with at least one hospitalization was 36.2% in the IPAH/HPAH group and 40.1% in the PAH-SSc group.
The 12-month Kaplan-Meier survival estimate was 92.9% in the IPAH/HPAH group and 91.3% in the PAH-SSc group. The 24-month estimated survival rate was 85.6% and 82.1%, respectively.
The OPUS registry and OrPHeUS study are sponsored by Actelion. Dr. McLaughlin disclosed relationships with Actelion, Acceleron, Bayer, Caremark, CiVi Biopharma, Reata, Sonovie, and United Therapeutics.
SOURCE: McLaughlin V et al. CHEST 2019. Abstract, doi: 10.1016/j.chest.2019.08.827.
REPORTING FROM CHEST 2019
Flu vaccine cuts infection severity in kids and adults
WASHINGTON –
During recent U.S. flu seasons, children and adults who contracted influenza despite vaccination had significantly fewer severe infections and infection complications, compared with unimmunized people, according to two separate reports from CDC researchers presented at an annual scientific meeting on infectious diseases.
One of the reports tracked the impact of flu vaccine in children using data that the CDC collected at seven medical centers that participated in the agency’s New Vaccine Surveillance Network, which provided information on children aged 6 months to 17 years who were hospitalized for an acute respiratory illness, including more than 1,700 children during the 2016-2017 flu season and more than 1,900 during the 2017-2018 season. Roughly 10% of these children tested positive for influenza, and the subsequent analysis focused on these cases and compared incidence rates among children who had been vaccinated during the index season and those who had remained unvaccinated.
Combined data from both seasons showed that vaccinated children were 50% less likely to have been hospitalized for an acute influenza infection, compared with unvaccinated kids, a pattern consistently seen both in children aged 6 months to 8 years and in those aged 9-17 years. The pattern of vaccine effectiveness also held regardless of which flu strain caused the infections, reported Angela P. Campbell, MD, a CDC medical officer.
“We saw a nice benefit from vaccination, both in previously healthy children and in those with an underlying medical condition,” a finding that adds to existing evidence of vaccine effectiveness, Dr. Campbell said in a video interview. The results confirmed that flu vaccination does not just prevent infections but also cuts the rate of more severe infections that lead to hospitalization, she explained.
Another CDC study looked at data collected by the agency’s Influenza Hospitalization Surveillance Network from adults at least 18 years old who were hospitalized for a laboratory-confirmed influenza infection during five flu seasons, 2013-2014 through 2017-18. The data, which came from more than 250 acute-care hospitals in 13 states, included more than 43,000 people hospitalized for an identified influenza strain and with a known vaccination history who were not institutionalized and had not received any antiviral treatment.
After propensity-weighted adjustment to create better parity between the vaccinated and unvaccinated patients, the results showed that people 18-64 years old with vaccination had statistically significant decreases in mortality of a relative 36%, need for mechanical ventilation of 34%, pneumonia of 20%, and need for ICU admission of a relative 19%, as well as an 18% drop in average ICU length of stay, Shikha Garg, MD, said at the meeting. The propensity-weighted analysis of data from people at least 65 years old showed statistically significant relative reductions linked with vaccination: 46% reduction in the need for mechanical ventilation, 28% reduction in ICU admissions, and 9% reduction in hospitalized length of stay.
Further analysis of these outcomes by the strains that caused these influenza infections showed that the statistically significant benefits from vaccination were seen only in patients infected with an H1N1 strain. Statistically significant effects on these severe outcomes were not apparent among people infected with the H3N2 or B strains, said Dr. Garg, a medical epidemiologist at the CDC.
“All adults should receive an annual flu vaccination as it can improve outcomes among those who develop influenza despite vaccination,” she concluded.
Results from a third CDC study reported at the meeting examined the importance of two vaccine doses (administered at least 4 weeks apart) given to children aged 6 months to 8 years for the first season they receive flu vaccination, which is the immunization approach for flu recommended by the CDC. The findings from a total of more than 7,500 children immunized during the 2014-2018 seasons showed a clear increment in vaccine protection among kids who received two doses during their first season vaccinated, especially in children who were 2 years old or younger. In that age group, administration of two doses produced vaccine effectiveness of 53% versus a 23% vaccine effectiveness after a single vaccine dose, reported Jessie Chung, a CDC epidemiologist.
WASHINGTON –
During recent U.S. flu seasons, children and adults who contracted influenza despite vaccination had significantly fewer severe infections and infection complications, compared with unimmunized people, according to two separate reports from CDC researchers presented at an annual scientific meeting on infectious diseases.
One of the reports tracked the impact of flu vaccine in children using data that the CDC collected at seven medical centers that participated in the agency’s New Vaccine Surveillance Network, which provided information on children aged 6 months to 17 years who were hospitalized for an acute respiratory illness, including more than 1,700 children during the 2016-2017 flu season and more than 1,900 during the 2017-2018 season. Roughly 10% of these children tested positive for influenza, and the subsequent analysis focused on these cases and compared incidence rates among children who had been vaccinated during the index season and those who had remained unvaccinated.
Combined data from both seasons showed that vaccinated children were 50% less likely to have been hospitalized for an acute influenza infection, compared with unvaccinated kids, a pattern consistently seen both in children aged 6 months to 8 years and in those aged 9-17 years. The pattern of vaccine effectiveness also held regardless of which flu strain caused the infections, reported Angela P. Campbell, MD, a CDC medical officer.
“We saw a nice benefit from vaccination, both in previously healthy children and in those with an underlying medical condition,” a finding that adds to existing evidence of vaccine effectiveness, Dr. Campbell said in a video interview. The results confirmed that flu vaccination does not just prevent infections but also cuts the rate of more severe infections that lead to hospitalization, she explained.
Another CDC study looked at data collected by the agency’s Influenza Hospitalization Surveillance Network from adults at least 18 years old who were hospitalized for a laboratory-confirmed influenza infection during five flu seasons, 2013-2014 through 2017-18. The data, which came from more than 250 acute-care hospitals in 13 states, included more than 43,000 people hospitalized for an identified influenza strain and with a known vaccination history who were not institutionalized and had not received any antiviral treatment.
After propensity-weighted adjustment to create better parity between the vaccinated and unvaccinated patients, the results showed that people 18-64 years old with vaccination had statistically significant decreases in mortality of a relative 36%, need for mechanical ventilation of 34%, pneumonia of 20%, and need for ICU admission of a relative 19%, as well as an 18% drop in average ICU length of stay, Shikha Garg, MD, said at the meeting. The propensity-weighted analysis of data from people at least 65 years old showed statistically significant relative reductions linked with vaccination: 46% reduction in the need for mechanical ventilation, 28% reduction in ICU admissions, and 9% reduction in hospitalized length of stay.
Further analysis of these outcomes by the strains that caused these influenza infections showed that the statistically significant benefits from vaccination were seen only in patients infected with an H1N1 strain. Statistically significant effects on these severe outcomes were not apparent among people infected with the H3N2 or B strains, said Dr. Garg, a medical epidemiologist at the CDC.
“All adults should receive an annual flu vaccination as it can improve outcomes among those who develop influenza despite vaccination,” she concluded.
Results from a third CDC study reported at the meeting examined the importance of two vaccine doses (administered at least 4 weeks apart) given to children aged 6 months to 8 years for the first season they receive flu vaccination, which is the immunization approach for flu recommended by the CDC. The findings from a total of more than 7,500 children immunized during the 2014-2018 seasons showed a clear increment in vaccine protection among kids who received two doses during their first season vaccinated, especially in children who were 2 years old or younger. In that age group, administration of two doses produced vaccine effectiveness of 53% versus a 23% vaccine effectiveness after a single vaccine dose, reported Jessie Chung, a CDC epidemiologist.
WASHINGTON –
During recent U.S. flu seasons, children and adults who contracted influenza despite vaccination had significantly fewer severe infections and infection complications, compared with unimmunized people, according to two separate reports from CDC researchers presented at an annual scientific meeting on infectious diseases.
One of the reports tracked the impact of flu vaccine in children using data that the CDC collected at seven medical centers that participated in the agency’s New Vaccine Surveillance Network, which provided information on children aged 6 months to 17 years who were hospitalized for an acute respiratory illness, including more than 1,700 children during the 2016-2017 flu season and more than 1,900 during the 2017-2018 season. Roughly 10% of these children tested positive for influenza, and the subsequent analysis focused on these cases and compared incidence rates among children who had been vaccinated during the index season and those who had remained unvaccinated.
Combined data from both seasons showed that vaccinated children were 50% less likely to have been hospitalized for an acute influenza infection, compared with unvaccinated kids, a pattern consistently seen both in children aged 6 months to 8 years and in those aged 9-17 years. The pattern of vaccine effectiveness also held regardless of which flu strain caused the infections, reported Angela P. Campbell, MD, a CDC medical officer.
“We saw a nice benefit from vaccination, both in previously healthy children and in those with an underlying medical condition,” a finding that adds to existing evidence of vaccine effectiveness, Dr. Campbell said in a video interview. The results confirmed that flu vaccination does not just prevent infections but also cuts the rate of more severe infections that lead to hospitalization, she explained.
Another CDC study looked at data collected by the agency’s Influenza Hospitalization Surveillance Network from adults at least 18 years old who were hospitalized for a laboratory-confirmed influenza infection during five flu seasons, 2013-2014 through 2017-18. The data, which came from more than 250 acute-care hospitals in 13 states, included more than 43,000 people hospitalized for an identified influenza strain and with a known vaccination history who were not institutionalized and had not received any antiviral treatment.
After propensity-weighted adjustment to create better parity between the vaccinated and unvaccinated patients, the results showed that people 18-64 years old with vaccination had statistically significant decreases in mortality of a relative 36%, need for mechanical ventilation of 34%, pneumonia of 20%, and need for ICU admission of a relative 19%, as well as an 18% drop in average ICU length of stay, Shikha Garg, MD, said at the meeting. The propensity-weighted analysis of data from people at least 65 years old showed statistically significant relative reductions linked with vaccination: 46% reduction in the need for mechanical ventilation, 28% reduction in ICU admissions, and 9% reduction in hospitalized length of stay.
Further analysis of these outcomes by the strains that caused these influenza infections showed that the statistically significant benefits from vaccination were seen only in patients infected with an H1N1 strain. Statistically significant effects on these severe outcomes were not apparent among people infected with the H3N2 or B strains, said Dr. Garg, a medical epidemiologist at the CDC.
“All adults should receive an annual flu vaccination as it can improve outcomes among those who develop influenza despite vaccination,” she concluded.
Results from a third CDC study reported at the meeting examined the importance of two vaccine doses (administered at least 4 weeks apart) given to children aged 6 months to 8 years for the first season they receive flu vaccination, which is the immunization approach for flu recommended by the CDC. The findings from a total of more than 7,500 children immunized during the 2014-2018 seasons showed a clear increment in vaccine protection among kids who received two doses during their first season vaccinated, especially in children who were 2 years old or younger. In that age group, administration of two doses produced vaccine effectiveness of 53% versus a 23% vaccine effectiveness after a single vaccine dose, reported Jessie Chung, a CDC epidemiologist.
REPORTING FROM ID WEEK 2019
Thromboembolic events more likely among CIDP patients with CVAD
AUSTIN, TEX. – Patients with chronic inflammatory demyelinating polyneuropathy (CIDP) who receive intravenous immunoglobulin (IVIg) appear to have an increased risk of thromboembolic events if it is administered with a central venous access device (CVAD) when compared against those without a CVAD, according to a recent study.
Although CVADs can reliably deliver IVIg, they also represent an established risk factor for thromboembolic events, Ami Patel, PhD, a senior epidemiologist at CSL Behring, and colleagues noted on their poster at the annual meeting of the American Association for Neuromuscular and Electrodiagnostic Medicine.
The results suggest a need for physicians to be vigilant about patients’ potential risk factors for thromboembolic events, Dr. Patel said in an interview. Further research is planned, however, because the current study did not control for other risk factors or explore other possible confounding, she said.
Dr. Patel and her associates analyzed U.S. claims data (IBM/Truven MarketScan) from 2006 to 2018 and included all patients with a CIDP diagnosis claim and a postdiagnosis code for IVIg. A code for CVAD up to 2 months before CIDP diagnosis without removal before IVIg treatment ended determined those with CVAD exposure, and thromboembolic events included any codes related to arterial, venous, or vascular prostheses.
The researchers then compared patients in a case-control fashion, matching each one with a CVAD to five patients of similar demographics without a CVAD. Characteristics used for matching included medical insurance type, prescription data availability, sex, age, geographic region, and years enrolled in the database.
Among 7,447 patients with at least one IVIg claim, 11.8% (n = 882) had CVAD exposure and 88.2% (n = 6,565) did not. Of those without a CVAD, 3,642 patients were matched to patients with CVAD. A quarter (25.4%) of patients with a CVAD had a thromboembolic event, compared with 11.2% of matched patients without CVADs (P less than .0001).
In the year leading up to IVIg therapy, 16.9% of those with a CVAD and 10.9% of matched patients without one had a previous thromboembolic event (P less than .0001). Patients with a CVAD also had significantly higher rates of hypertension (51.9% vs. 45.0% with placebo; P less than .001) and anticoagulation therapy (7.0% vs. 5.2% with placebo; P less than .05). Differences between the groups were not significant for diabetes (26.9% vs. 24.2%) and hyperlipidemia (19.1% vs. 17.8%).
Occlusion and stenosis of the carotid artery was the most common arterial thromboembolic outcome, occurring in 5.3% of those with a CVAD and in 2.8% of those without a CVAD. The most common venous thromboembolic event was acute venous embolism and thrombosis of lower-extremity deep vessels, which occurred in 7% of those with a CVAD and in 1.8% of those without.
The researchers also compared inpatient admissions and emergency department visits among those with and without a CVAD; both rates were higher in patients with a CVAD. Visits to the emergency department occurred at a rate of 0.14 events per month for those with a CVAD (2.01 distinct months with a claim) and 0.09 events per month for those without a CVAD (0.65 distinct months with a claim). Patients with a CVAD had 1.44 months with an inpatient admissions claim, in comparison with 0.41 months among matched patients without a CVAD. Inpatient admission frequency per month was 0.14 for those with a CVAD and 0.08 for those without.
The research was funded by CSL Behring. Dr. Patel and two of the other five authors are employees of CSL Behring.
SOURCE: Patel A et al. AANEM 2019, Abstract 94.
AUSTIN, TEX. – Patients with chronic inflammatory demyelinating polyneuropathy (CIDP) who receive intravenous immunoglobulin (IVIg) appear to have an increased risk of thromboembolic events if it is administered with a central venous access device (CVAD) when compared against those without a CVAD, according to a recent study.
Although CVADs can reliably deliver IVIg, they also represent an established risk factor for thromboembolic events, Ami Patel, PhD, a senior epidemiologist at CSL Behring, and colleagues noted on their poster at the annual meeting of the American Association for Neuromuscular and Electrodiagnostic Medicine.
The results suggest a need for physicians to be vigilant about patients’ potential risk factors for thromboembolic events, Dr. Patel said in an interview. Further research is planned, however, because the current study did not control for other risk factors or explore other possible confounding, she said.
Dr. Patel and her associates analyzed U.S. claims data (IBM/Truven MarketScan) from 2006 to 2018 and included all patients with a CIDP diagnosis claim and a postdiagnosis code for IVIg. A code for CVAD up to 2 months before CIDP diagnosis without removal before IVIg treatment ended determined those with CVAD exposure, and thromboembolic events included any codes related to arterial, venous, or vascular prostheses.
The researchers then compared patients in a case-control fashion, matching each one with a CVAD to five patients of similar demographics without a CVAD. Characteristics used for matching included medical insurance type, prescription data availability, sex, age, geographic region, and years enrolled in the database.
Among 7,447 patients with at least one IVIg claim, 11.8% (n = 882) had CVAD exposure and 88.2% (n = 6,565) did not. Of those without a CVAD, 3,642 patients were matched to patients with CVAD. A quarter (25.4%) of patients with a CVAD had a thromboembolic event, compared with 11.2% of matched patients without CVADs (P less than .0001).
In the year leading up to IVIg therapy, 16.9% of those with a CVAD and 10.9% of matched patients without one had a previous thromboembolic event (P less than .0001). Patients with a CVAD also had significantly higher rates of hypertension (51.9% vs. 45.0% with placebo; P less than .001) and anticoagulation therapy (7.0% vs. 5.2% with placebo; P less than .05). Differences between the groups were not significant for diabetes (26.9% vs. 24.2%) and hyperlipidemia (19.1% vs. 17.8%).
Occlusion and stenosis of the carotid artery was the most common arterial thromboembolic outcome, occurring in 5.3% of those with a CVAD and in 2.8% of those without a CVAD. The most common venous thromboembolic event was acute venous embolism and thrombosis of lower-extremity deep vessels, which occurred in 7% of those with a CVAD and in 1.8% of those without.
The researchers also compared inpatient admissions and emergency department visits among those with and without a CVAD; both rates were higher in patients with a CVAD. Visits to the emergency department occurred at a rate of 0.14 events per month for those with a CVAD (2.01 distinct months with a claim) and 0.09 events per month for those without a CVAD (0.65 distinct months with a claim). Patients with a CVAD had 1.44 months with an inpatient admissions claim, in comparison with 0.41 months among matched patients without a CVAD. Inpatient admission frequency per month was 0.14 for those with a CVAD and 0.08 for those without.
The research was funded by CSL Behring. Dr. Patel and two of the other five authors are employees of CSL Behring.
SOURCE: Patel A et al. AANEM 2019, Abstract 94.
AUSTIN, TEX. – Patients with chronic inflammatory demyelinating polyneuropathy (CIDP) who receive intravenous immunoglobulin (IVIg) appear to have an increased risk of thromboembolic events if it is administered with a central venous access device (CVAD) when compared against those without a CVAD, according to a recent study.
Although CVADs can reliably deliver IVIg, they also represent an established risk factor for thromboembolic events, Ami Patel, PhD, a senior epidemiologist at CSL Behring, and colleagues noted on their poster at the annual meeting of the American Association for Neuromuscular and Electrodiagnostic Medicine.
The results suggest a need for physicians to be vigilant about patients’ potential risk factors for thromboembolic events, Dr. Patel said in an interview. Further research is planned, however, because the current study did not control for other risk factors or explore other possible confounding, she said.
Dr. Patel and her associates analyzed U.S. claims data (IBM/Truven MarketScan) from 2006 to 2018 and included all patients with a CIDP diagnosis claim and a postdiagnosis code for IVIg. A code for CVAD up to 2 months before CIDP diagnosis without removal before IVIg treatment ended determined those with CVAD exposure, and thromboembolic events included any codes related to arterial, venous, or vascular prostheses.
The researchers then compared patients in a case-control fashion, matching each one with a CVAD to five patients of similar demographics without a CVAD. Characteristics used for matching included medical insurance type, prescription data availability, sex, age, geographic region, and years enrolled in the database.
Among 7,447 patients with at least one IVIg claim, 11.8% (n = 882) had CVAD exposure and 88.2% (n = 6,565) did not. Of those without a CVAD, 3,642 patients were matched to patients with CVAD. A quarter (25.4%) of patients with a CVAD had a thromboembolic event, compared with 11.2% of matched patients without CVADs (P less than .0001).
In the year leading up to IVIg therapy, 16.9% of those with a CVAD and 10.9% of matched patients without one had a previous thromboembolic event (P less than .0001). Patients with a CVAD also had significantly higher rates of hypertension (51.9% vs. 45.0% with placebo; P less than .001) and anticoagulation therapy (7.0% vs. 5.2% with placebo; P less than .05). Differences between the groups were not significant for diabetes (26.9% vs. 24.2%) and hyperlipidemia (19.1% vs. 17.8%).
Occlusion and stenosis of the carotid artery was the most common arterial thromboembolic outcome, occurring in 5.3% of those with a CVAD and in 2.8% of those without a CVAD. The most common venous thromboembolic event was acute venous embolism and thrombosis of lower-extremity deep vessels, which occurred in 7% of those with a CVAD and in 1.8% of those without.
The researchers also compared inpatient admissions and emergency department visits among those with and without a CVAD; both rates were higher in patients with a CVAD. Visits to the emergency department occurred at a rate of 0.14 events per month for those with a CVAD (2.01 distinct months with a claim) and 0.09 events per month for those without a CVAD (0.65 distinct months with a claim). Patients with a CVAD had 1.44 months with an inpatient admissions claim, in comparison with 0.41 months among matched patients without a CVAD. Inpatient admission frequency per month was 0.14 for those with a CVAD and 0.08 for those without.
The research was funded by CSL Behring. Dr. Patel and two of the other five authors are employees of CSL Behring.
SOURCE: Patel A et al. AANEM 2019, Abstract 94.
REPORTING FROM AANEM 2019
CDC, FDA in hot pursuit of source of vaping lung injuries
The Centers for Disease Control and Prevention is providing frequent updates of the wide-ranging and aggressive investigation of the cases and deaths linked to vaping, and although a definitive cause remains unknown, evidence is accumulating to implicate tetrahydrocannabinol (THC)-containing devices. The investigation is being conducted in concert with the Food and Drug Administration, many state and local health departments, and public health and clinical partners.
The acronym EVALI has been developed by CDC to refer to e-cigarette, or vaping products use–associated lung injury. In a report summarizing data up to Oct. 22, CDC reported 1,604 EVALI cases and 34 deaths. These cases have occurred in all U.S. states (except Alaska), the District of Columbia, and the U.S. Virgin Islands. The CDC also published a report in the Morbidity and Mortality Weekly report on characteristics of those patients who have died from EVALI-based symptoms as of Oct. 15, 2019.
With data available for more than 867 patients with EVALI, about 86% had a history of using e-cigarette or vaping products that contained THC in the previous 90 days; 64% reported using nicotine-containing products; 34% reported exclusive use of THC-containing products, and 11% reported exclusive use of nicotine-containing products; 52% reported use of both.
In a telebriefing on Oct. 25, Anne Schuchat, MD, CDC principal deputy director, said, “The data do continue to point towards THC-containing products as the source of the vast majority of individuals’ lung injury. There are continuing cases that do not report that history. But I’d like to stress that we don’t know what the risky material or substance is. THC may be a marker for a way that cartridges were prepared or the way that the devices are producing harm. Whether there are similar activities going on with cartridges that don’t contain THC, for instance, remains to be seen. So, I think we are seeing the THC as a marker for products that are risky.”
EVALI deaths
Among the 29 deaths reported as of Oct. 15, 59% (17) were male; the median age was 45 years (range, 17-75 years), 55 years (range, 17-71 years) among males, and 43 years (range, 27-75 years) among females; the age difference between males and females was not statistically significant. Patients who died tended to be older than patients who survived. Among 19 EVALI patients who died and for whom data on substance use was available, the use of any THC-containing products was reported by patients or proxies for 84% (16), including 63% (12) who exclusively used THC-containing products. Use of any nicotine-containing products was reported for 37% (7), including 16% (3) who exclusively used nicotine-containing products. Use of both THC- and nicotine-containing products was reported in four of those who died.
Investigation update
Mitch Zeller, JD, director, Center for Tobacco Products at the Food and Drug Administration, participated in the telebriefing and provided an update on the ongoing investigation. “State of the art methods are being used to assess the presence of a broad range of chemicals including nicotine, THC, and other cannabinoids, opioids, additives, pesticides, poisons and toxins,” he said. “FDA has received or collected over 900 samples from 25 states to date. Those numbers continue to increase. The samples [were] collected directly from consumers, hospitals, and from state offices include vaping devices and products that contain liquid as well as packaging and some nearly empty containers.” He cautioned that identifying the substance is “but one piece of the puzzle and will not necessarily answer questions about causality.” He also noted that the self-reports of THC and/or nicotine could mean that there is misreported data, because reports in many cases are coming from teens and from jurisdictions in which THC is not legal.
The issue of whether EVALI has been seen in recent years but not recognized or whether EVALI is a new phenomenon was raised by a caller at the telebriefing. Dr. Schuchat responded, “We are aware of older cases that look similar to what we are seeing now. But we do not believe that this outbreak or surge in cases is due to better recognition.” She suggested that some evidence points to cutting agents being introduced to increase profits of e-cigarettes and that risky and unknown substances have been introduced into the supply chain.
A “handful” of cases of readmission have been reported, and the CDC is currently investigating whether these cases included patients who took up vaping again or had some other possible contributing factor. Dr. Schuchat cautioned recovering patients not to resume vaping because of the risk of readmission and the probability that their lungs will remain in a weakened state.
Clinical guidance update
The CDC provided detailed interim clinical guidance on evaluating and caring for patients with EVALI. The recommendations focus on patient history, lab testing, criteria for hospitalization, and follow-up for these patients.
Obtaining a detailed history of patients presenting with suspected EVALI is especially important for this patient population, given the many unknowns surrounding this condition, according to the CDC. The updated guidance states, “All health care providers evaluating patients for EVALI should ask about the use of e-cigarette or vaping products, and ideally should ask about types of substances used (e.g.,THC, cannabis [oil, dabs], nicotine, modified products or the addition of substances not intended by the manufacturer); product source, specific product brand and name; duration and frequency of use, time of last use; product delivery system and method of use (aerosolization, dabbing, or dripping).” The approach recommended for soliciting accurate information is “empathetic, nonjudgmental” and, the guidelines say, patients should be questioned in private regarding sensitive information to assure confidentiality.
A respiratory virus panel is recommended for all suspected EVALI patients, although at this time, these tests cannot be used to distinguish EVALI from infectious etiologies. All patients should be considered for urine toxicology testing, including testing for THC.
Imaging guidance for suspected EVALI patients includes chest x-ray, with additional CT scan when the x-ray result does not correlate with clinical findings or to evaluate severe or worsening disease.
Recommended criteria for hospitalization of patients with suspected EVALI are those patients with decreased O2 saturation (less than 95%) on room air, in respiratory distress, or with comorbidities that compromise pulmonary reserve. As of Oct. 8, 96% of patients with suspected EVALI reported to the CDC have been hospitalized.
As for medical treatment of these patients, corticosteroids have been found to be helpful. The statement noted, “Among 140 cases reported nationally to CDC that received corticosteroids, 82% of patients improved.”
The natural progression of this injury is not known, however, and it is possible that patients might recover without corticosteroids. Given the unknown etiology of the disease and “because the diagnosis remains one of exclusion, aggressive empiric therapy with corticosteroids, antimicrobial, and antiviral therapy might be warranted for patients with severe illness. A range of corticosteroid doses, durations, and taper plans might be considered on a case-by-case basis.”
The report concluded with a strong recommendation that patients hospitalized with EVALI are followed closely with a visit 1-2 weeks after discharge and again with additional testing 1-2 months later. Health care providers are also advised to consult medical specialists, in particular pulmonologists, who can offer further evaluation, recommend empiric treatment, and review indications for bronchoscopy.
CPT coding for EVALI
CDC has issued coding guidance to help track EVALI. The document was posted on the CDC website. The coding guidance is consistent with current clinical knowledge about EVALI-related disorders and is intended for use in conjunction with current ICD-10-CM classifications.
The following conditions associated with EVALI are covered in the new coding guidance:
- Bronchitis and pneumonitis caused by chemicals, gases, and fumes; including chemical pneumonitis; J68.0.
- Pneumonitis caused by inhalation of oils and essences; including lipoid pneumonia; J69.1.
- Acute respiratory distress syndrome; J80.
- Pulmonary eosinophilia, not elsewhere classified; J82.
- Acute interstitial pneumonitis; J84.114.
The document notes that the coding guidance has been approved by the National Center for Health Statistics, the American Health Information Management Association, the American Hospital Association, and the Centers for Medicare & Medicaid Services.
Investigation continues
Mr. Zeller cautioned that this investigation will not be concluded in the near future. He noted, “We are committed to working to [solve the mystery] just as quickly as we can, but we also recognize that it will likely take some time. Importantly, the diversity of the patients and the products or substances they have reported using and the samples being tested may mean ultimately that there are multiple causes of these injuries.”
Richard Franki and Gregory Twachtman contributed to this story.
The Centers for Disease Control and Prevention is providing frequent updates of the wide-ranging and aggressive investigation of the cases and deaths linked to vaping, and although a definitive cause remains unknown, evidence is accumulating to implicate tetrahydrocannabinol (THC)-containing devices. The investigation is being conducted in concert with the Food and Drug Administration, many state and local health departments, and public health and clinical partners.
The acronym EVALI has been developed by CDC to refer to e-cigarette, or vaping products use–associated lung injury. In a report summarizing data up to Oct. 22, CDC reported 1,604 EVALI cases and 34 deaths. These cases have occurred in all U.S. states (except Alaska), the District of Columbia, and the U.S. Virgin Islands. The CDC also published a report in the Morbidity and Mortality Weekly report on characteristics of those patients who have died from EVALI-based symptoms as of Oct. 15, 2019.
With data available for more than 867 patients with EVALI, about 86% had a history of using e-cigarette or vaping products that contained THC in the previous 90 days; 64% reported using nicotine-containing products; 34% reported exclusive use of THC-containing products, and 11% reported exclusive use of nicotine-containing products; 52% reported use of both.
In a telebriefing on Oct. 25, Anne Schuchat, MD, CDC principal deputy director, said, “The data do continue to point towards THC-containing products as the source of the vast majority of individuals’ lung injury. There are continuing cases that do not report that history. But I’d like to stress that we don’t know what the risky material or substance is. THC may be a marker for a way that cartridges were prepared or the way that the devices are producing harm. Whether there are similar activities going on with cartridges that don’t contain THC, for instance, remains to be seen. So, I think we are seeing the THC as a marker for products that are risky.”
EVALI deaths
Among the 29 deaths reported as of Oct. 15, 59% (17) were male; the median age was 45 years (range, 17-75 years), 55 years (range, 17-71 years) among males, and 43 years (range, 27-75 years) among females; the age difference between males and females was not statistically significant. Patients who died tended to be older than patients who survived. Among 19 EVALI patients who died and for whom data on substance use was available, the use of any THC-containing products was reported by patients or proxies for 84% (16), including 63% (12) who exclusively used THC-containing products. Use of any nicotine-containing products was reported for 37% (7), including 16% (3) who exclusively used nicotine-containing products. Use of both THC- and nicotine-containing products was reported in four of those who died.
Investigation update
Mitch Zeller, JD, director, Center for Tobacco Products at the Food and Drug Administration, participated in the telebriefing and provided an update on the ongoing investigation. “State of the art methods are being used to assess the presence of a broad range of chemicals including nicotine, THC, and other cannabinoids, opioids, additives, pesticides, poisons and toxins,” he said. “FDA has received or collected over 900 samples from 25 states to date. Those numbers continue to increase. The samples [were] collected directly from consumers, hospitals, and from state offices include vaping devices and products that contain liquid as well as packaging and some nearly empty containers.” He cautioned that identifying the substance is “but one piece of the puzzle and will not necessarily answer questions about causality.” He also noted that the self-reports of THC and/or nicotine could mean that there is misreported data, because reports in many cases are coming from teens and from jurisdictions in which THC is not legal.
The issue of whether EVALI has been seen in recent years but not recognized or whether EVALI is a new phenomenon was raised by a caller at the telebriefing. Dr. Schuchat responded, “We are aware of older cases that look similar to what we are seeing now. But we do not believe that this outbreak or surge in cases is due to better recognition.” She suggested that some evidence points to cutting agents being introduced to increase profits of e-cigarettes and that risky and unknown substances have been introduced into the supply chain.
A “handful” of cases of readmission have been reported, and the CDC is currently investigating whether these cases included patients who took up vaping again or had some other possible contributing factor. Dr. Schuchat cautioned recovering patients not to resume vaping because of the risk of readmission and the probability that their lungs will remain in a weakened state.
Clinical guidance update
The CDC provided detailed interim clinical guidance on evaluating and caring for patients with EVALI. The recommendations focus on patient history, lab testing, criteria for hospitalization, and follow-up for these patients.
Obtaining a detailed history of patients presenting with suspected EVALI is especially important for this patient population, given the many unknowns surrounding this condition, according to the CDC. The updated guidance states, “All health care providers evaluating patients for EVALI should ask about the use of e-cigarette or vaping products, and ideally should ask about types of substances used (e.g.,THC, cannabis [oil, dabs], nicotine, modified products or the addition of substances not intended by the manufacturer); product source, specific product brand and name; duration and frequency of use, time of last use; product delivery system and method of use (aerosolization, dabbing, or dripping).” The approach recommended for soliciting accurate information is “empathetic, nonjudgmental” and, the guidelines say, patients should be questioned in private regarding sensitive information to assure confidentiality.
A respiratory virus panel is recommended for all suspected EVALI patients, although at this time, these tests cannot be used to distinguish EVALI from infectious etiologies. All patients should be considered for urine toxicology testing, including testing for THC.
Imaging guidance for suspected EVALI patients includes chest x-ray, with additional CT scan when the x-ray result does not correlate with clinical findings or to evaluate severe or worsening disease.
Recommended criteria for hospitalization of patients with suspected EVALI are those patients with decreased O2 saturation (less than 95%) on room air, in respiratory distress, or with comorbidities that compromise pulmonary reserve. As of Oct. 8, 96% of patients with suspected EVALI reported to the CDC have been hospitalized.
As for medical treatment of these patients, corticosteroids have been found to be helpful. The statement noted, “Among 140 cases reported nationally to CDC that received corticosteroids, 82% of patients improved.”
The natural progression of this injury is not known, however, and it is possible that patients might recover without corticosteroids. Given the unknown etiology of the disease and “because the diagnosis remains one of exclusion, aggressive empiric therapy with corticosteroids, antimicrobial, and antiviral therapy might be warranted for patients with severe illness. A range of corticosteroid doses, durations, and taper plans might be considered on a case-by-case basis.”
The report concluded with a strong recommendation that patients hospitalized with EVALI are followed closely with a visit 1-2 weeks after discharge and again with additional testing 1-2 months later. Health care providers are also advised to consult medical specialists, in particular pulmonologists, who can offer further evaluation, recommend empiric treatment, and review indications for bronchoscopy.
CPT coding for EVALI
CDC has issued coding guidance to help track EVALI. The document was posted on the CDC website. The coding guidance is consistent with current clinical knowledge about EVALI-related disorders and is intended for use in conjunction with current ICD-10-CM classifications.
The following conditions associated with EVALI are covered in the new coding guidance:
- Bronchitis and pneumonitis caused by chemicals, gases, and fumes; including chemical pneumonitis; J68.0.
- Pneumonitis caused by inhalation of oils and essences; including lipoid pneumonia; J69.1.
- Acute respiratory distress syndrome; J80.
- Pulmonary eosinophilia, not elsewhere classified; J82.
- Acute interstitial pneumonitis; J84.114.
The document notes that the coding guidance has been approved by the National Center for Health Statistics, the American Health Information Management Association, the American Hospital Association, and the Centers for Medicare & Medicaid Services.
Investigation continues
Mr. Zeller cautioned that this investigation will not be concluded in the near future. He noted, “We are committed to working to [solve the mystery] just as quickly as we can, but we also recognize that it will likely take some time. Importantly, the diversity of the patients and the products or substances they have reported using and the samples being tested may mean ultimately that there are multiple causes of these injuries.”
Richard Franki and Gregory Twachtman contributed to this story.
The Centers for Disease Control and Prevention is providing frequent updates of the wide-ranging and aggressive investigation of the cases and deaths linked to vaping, and although a definitive cause remains unknown, evidence is accumulating to implicate tetrahydrocannabinol (THC)-containing devices. The investigation is being conducted in concert with the Food and Drug Administration, many state and local health departments, and public health and clinical partners.
The acronym EVALI has been developed by CDC to refer to e-cigarette, or vaping products use–associated lung injury. In a report summarizing data up to Oct. 22, CDC reported 1,604 EVALI cases and 34 deaths. These cases have occurred in all U.S. states (except Alaska), the District of Columbia, and the U.S. Virgin Islands. The CDC also published a report in the Morbidity and Mortality Weekly report on characteristics of those patients who have died from EVALI-based symptoms as of Oct. 15, 2019.
With data available for more than 867 patients with EVALI, about 86% had a history of using e-cigarette or vaping products that contained THC in the previous 90 days; 64% reported using nicotine-containing products; 34% reported exclusive use of THC-containing products, and 11% reported exclusive use of nicotine-containing products; 52% reported use of both.
In a telebriefing on Oct. 25, Anne Schuchat, MD, CDC principal deputy director, said, “The data do continue to point towards THC-containing products as the source of the vast majority of individuals’ lung injury. There are continuing cases that do not report that history. But I’d like to stress that we don’t know what the risky material or substance is. THC may be a marker for a way that cartridges were prepared or the way that the devices are producing harm. Whether there are similar activities going on with cartridges that don’t contain THC, for instance, remains to be seen. So, I think we are seeing the THC as a marker for products that are risky.”
EVALI deaths
Among the 29 deaths reported as of Oct. 15, 59% (17) were male; the median age was 45 years (range, 17-75 years), 55 years (range, 17-71 years) among males, and 43 years (range, 27-75 years) among females; the age difference between males and females was not statistically significant. Patients who died tended to be older than patients who survived. Among 19 EVALI patients who died and for whom data on substance use was available, the use of any THC-containing products was reported by patients or proxies for 84% (16), including 63% (12) who exclusively used THC-containing products. Use of any nicotine-containing products was reported for 37% (7), including 16% (3) who exclusively used nicotine-containing products. Use of both THC- and nicotine-containing products was reported in four of those who died.
Investigation update
Mitch Zeller, JD, director, Center for Tobacco Products at the Food and Drug Administration, participated in the telebriefing and provided an update on the ongoing investigation. “State of the art methods are being used to assess the presence of a broad range of chemicals including nicotine, THC, and other cannabinoids, opioids, additives, pesticides, poisons and toxins,” he said. “FDA has received or collected over 900 samples from 25 states to date. Those numbers continue to increase. The samples [were] collected directly from consumers, hospitals, and from state offices include vaping devices and products that contain liquid as well as packaging and some nearly empty containers.” He cautioned that identifying the substance is “but one piece of the puzzle and will not necessarily answer questions about causality.” He also noted that the self-reports of THC and/or nicotine could mean that there is misreported data, because reports in many cases are coming from teens and from jurisdictions in which THC is not legal.
The issue of whether EVALI has been seen in recent years but not recognized or whether EVALI is a new phenomenon was raised by a caller at the telebriefing. Dr. Schuchat responded, “We are aware of older cases that look similar to what we are seeing now. But we do not believe that this outbreak or surge in cases is due to better recognition.” She suggested that some evidence points to cutting agents being introduced to increase profits of e-cigarettes and that risky and unknown substances have been introduced into the supply chain.
A “handful” of cases of readmission have been reported, and the CDC is currently investigating whether these cases included patients who took up vaping again or had some other possible contributing factor. Dr. Schuchat cautioned recovering patients not to resume vaping because of the risk of readmission and the probability that their lungs will remain in a weakened state.
Clinical guidance update
The CDC provided detailed interim clinical guidance on evaluating and caring for patients with EVALI. The recommendations focus on patient history, lab testing, criteria for hospitalization, and follow-up for these patients.
Obtaining a detailed history of patients presenting with suspected EVALI is especially important for this patient population, given the many unknowns surrounding this condition, according to the CDC. The updated guidance states, “All health care providers evaluating patients for EVALI should ask about the use of e-cigarette or vaping products, and ideally should ask about types of substances used (e.g.,THC, cannabis [oil, dabs], nicotine, modified products or the addition of substances not intended by the manufacturer); product source, specific product brand and name; duration and frequency of use, time of last use; product delivery system and method of use (aerosolization, dabbing, or dripping).” The approach recommended for soliciting accurate information is “empathetic, nonjudgmental” and, the guidelines say, patients should be questioned in private regarding sensitive information to assure confidentiality.
A respiratory virus panel is recommended for all suspected EVALI patients, although at this time, these tests cannot be used to distinguish EVALI from infectious etiologies. All patients should be considered for urine toxicology testing, including testing for THC.
Imaging guidance for suspected EVALI patients includes chest x-ray, with additional CT scan when the x-ray result does not correlate with clinical findings or to evaluate severe or worsening disease.
Recommended criteria for hospitalization of patients with suspected EVALI are those patients with decreased O2 saturation (less than 95%) on room air, in respiratory distress, or with comorbidities that compromise pulmonary reserve. As of Oct. 8, 96% of patients with suspected EVALI reported to the CDC have been hospitalized.
As for medical treatment of these patients, corticosteroids have been found to be helpful. The statement noted, “Among 140 cases reported nationally to CDC that received corticosteroids, 82% of patients improved.”
The natural progression of this injury is not known, however, and it is possible that patients might recover without corticosteroids. Given the unknown etiology of the disease and “because the diagnosis remains one of exclusion, aggressive empiric therapy with corticosteroids, antimicrobial, and antiviral therapy might be warranted for patients with severe illness. A range of corticosteroid doses, durations, and taper plans might be considered on a case-by-case basis.”
The report concluded with a strong recommendation that patients hospitalized with EVALI are followed closely with a visit 1-2 weeks after discharge and again with additional testing 1-2 months later. Health care providers are also advised to consult medical specialists, in particular pulmonologists, who can offer further evaluation, recommend empiric treatment, and review indications for bronchoscopy.
CPT coding for EVALI
CDC has issued coding guidance to help track EVALI. The document was posted on the CDC website. The coding guidance is consistent with current clinical knowledge about EVALI-related disorders and is intended for use in conjunction with current ICD-10-CM classifications.
The following conditions associated with EVALI are covered in the new coding guidance:
- Bronchitis and pneumonitis caused by chemicals, gases, and fumes; including chemical pneumonitis; J68.0.
- Pneumonitis caused by inhalation of oils and essences; including lipoid pneumonia; J69.1.
- Acute respiratory distress syndrome; J80.
- Pulmonary eosinophilia, not elsewhere classified; J82.
- Acute interstitial pneumonitis; J84.114.
The document notes that the coding guidance has been approved by the National Center for Health Statistics, the American Health Information Management Association, the American Hospital Association, and the Centers for Medicare & Medicaid Services.
Investigation continues
Mr. Zeller cautioned that this investigation will not be concluded in the near future. He noted, “We are committed to working to [solve the mystery] just as quickly as we can, but we also recognize that it will likely take some time. Importantly, the diversity of the patients and the products or substances they have reported using and the samples being tested may mean ultimately that there are multiple causes of these injuries.”
Richard Franki and Gregory Twachtman contributed to this story.
THC use reported in majority of vaping-related illnesses
(EVALI), according to the Centers for Disease Control and Prevention.
In the largest analysis to date, exclusive use of THC-containing products was reported for 34% of the 1,378 patients with confirmed or probable EVALI as of Oct. 15, 2019. Among those who died, 63% had been using THC exclusively during the 3 months preceding symptom onset, Erin D. Moritz, PhD, and associates said Oct. 28 in the Morbidity and Mortality Weekly Report.
Almost two-thirds (64%) of all EVALI patients had used nicotine-containing products at some time in the 3 months before symptom onset, and nicotine use was exclusive for 11%. Any nicotine use was reported for 37% of EVALI-related deaths, with exclusive use at 16%, the investigators reported.
“The data presented here suggest that THC-containing products are playing an important role in this outbreak,” they wrote, but “to date, no single compound or ingredient has emerged as the cause of EVALI, and there might be more than one cause.”
Dr. Moritz and associates also noted that many “patients likely did not know the content of the e-cigarette, or vaping, products they used,” which may have led to misclassification of substances.
SOURCE: Moritz ED et al. MMWR. Morbidity and mortality weekly report 2019 Oct 28;68(early release):1-4.
(EVALI), according to the Centers for Disease Control and Prevention.
In the largest analysis to date, exclusive use of THC-containing products was reported for 34% of the 1,378 patients with confirmed or probable EVALI as of Oct. 15, 2019. Among those who died, 63% had been using THC exclusively during the 3 months preceding symptom onset, Erin D. Moritz, PhD, and associates said Oct. 28 in the Morbidity and Mortality Weekly Report.
Almost two-thirds (64%) of all EVALI patients had used nicotine-containing products at some time in the 3 months before symptom onset, and nicotine use was exclusive for 11%. Any nicotine use was reported for 37% of EVALI-related deaths, with exclusive use at 16%, the investigators reported.
“The data presented here suggest that THC-containing products are playing an important role in this outbreak,” they wrote, but “to date, no single compound or ingredient has emerged as the cause of EVALI, and there might be more than one cause.”
Dr. Moritz and associates also noted that many “patients likely did not know the content of the e-cigarette, or vaping, products they used,” which may have led to misclassification of substances.
SOURCE: Moritz ED et al. MMWR. Morbidity and mortality weekly report 2019 Oct 28;68(early release):1-4.
(EVALI), according to the Centers for Disease Control and Prevention.
In the largest analysis to date, exclusive use of THC-containing products was reported for 34% of the 1,378 patients with confirmed or probable EVALI as of Oct. 15, 2019. Among those who died, 63% had been using THC exclusively during the 3 months preceding symptom onset, Erin D. Moritz, PhD, and associates said Oct. 28 in the Morbidity and Mortality Weekly Report.
Almost two-thirds (64%) of all EVALI patients had used nicotine-containing products at some time in the 3 months before symptom onset, and nicotine use was exclusive for 11%. Any nicotine use was reported for 37% of EVALI-related deaths, with exclusive use at 16%, the investigators reported.
“The data presented here suggest that THC-containing products are playing an important role in this outbreak,” they wrote, but “to date, no single compound or ingredient has emerged as the cause of EVALI, and there might be more than one cause.”
Dr. Moritz and associates also noted that many “patients likely did not know the content of the e-cigarette, or vaping, products they used,” which may have led to misclassification of substances.
SOURCE: Moritz ED et al. MMWR. Morbidity and mortality weekly report 2019 Oct 28;68(early release):1-4.
FROM MMWR
ICD-10 codes for EVALI released
The Centers for Disease Control and Prevention has issued coding guidance to help track e-cigarette, or vaping, product use–associated lung injury (EVALI).
The purpose of the coding guidelines “is to provide official diagnosis coding guidance for healthcare encounters related to the 2019 health care encounters and deaths related to” EVALI, CDC stated in a document detailing the coding update. The document was posted on the CDC website. The guidance is consistent with current clinical knowledge about e-cigarette, or vaping, related disorders.
CDC noted in the document that the guidance “is intended to be used in conjunction with current ICD-10-CM classification,” and the codes provided “are intended to provide e-cigarette, or vaping, product use coding guidance only.”
The codes are intended to track a number of areas related to EVALI, including lung-related complications, poisoning and toxicity, and substance use, abuse, and dependence.
The following conditions associated with EVALI are covered in the new coding guidance:
- Bronchitis and pneumonitis caused by chemicals, gases, and fumes.
- Bronchitis and pneumonitis caused by chemicals, gases, fumes, and vapors; includes chemical pneumonitis.
- Pneumonitis caused by inhalation of oils and essences; includes lipoid pneumonia.
- Acute respiratory distress syndrome.
- Pulmonary eosinophilia, not elsewhere classified.
- Acute interstitial pneumonitis.
The document notes that the coding guidance has been approved by the National Center for Health Statistics, the American Health Information Management Association, the American Hospital Association, and the Centers for Medicare & Medicaid Services.
The Centers for Disease Control and Prevention has issued coding guidance to help track e-cigarette, or vaping, product use–associated lung injury (EVALI).
The purpose of the coding guidelines “is to provide official diagnosis coding guidance for healthcare encounters related to the 2019 health care encounters and deaths related to” EVALI, CDC stated in a document detailing the coding update. The document was posted on the CDC website. The guidance is consistent with current clinical knowledge about e-cigarette, or vaping, related disorders.
CDC noted in the document that the guidance “is intended to be used in conjunction with current ICD-10-CM classification,” and the codes provided “are intended to provide e-cigarette, or vaping, product use coding guidance only.”
The codes are intended to track a number of areas related to EVALI, including lung-related complications, poisoning and toxicity, and substance use, abuse, and dependence.
The following conditions associated with EVALI are covered in the new coding guidance:
- Bronchitis and pneumonitis caused by chemicals, gases, and fumes.
- Bronchitis and pneumonitis caused by chemicals, gases, fumes, and vapors; includes chemical pneumonitis.
- Pneumonitis caused by inhalation of oils and essences; includes lipoid pneumonia.
- Acute respiratory distress syndrome.
- Pulmonary eosinophilia, not elsewhere classified.
- Acute interstitial pneumonitis.
The document notes that the coding guidance has been approved by the National Center for Health Statistics, the American Health Information Management Association, the American Hospital Association, and the Centers for Medicare & Medicaid Services.
The Centers for Disease Control and Prevention has issued coding guidance to help track e-cigarette, or vaping, product use–associated lung injury (EVALI).
The purpose of the coding guidelines “is to provide official diagnosis coding guidance for healthcare encounters related to the 2019 health care encounters and deaths related to” EVALI, CDC stated in a document detailing the coding update. The document was posted on the CDC website. The guidance is consistent with current clinical knowledge about e-cigarette, or vaping, related disorders.
CDC noted in the document that the guidance “is intended to be used in conjunction with current ICD-10-CM classification,” and the codes provided “are intended to provide e-cigarette, or vaping, product use coding guidance only.”
The codes are intended to track a number of areas related to EVALI, including lung-related complications, poisoning and toxicity, and substance use, abuse, and dependence.
The following conditions associated with EVALI are covered in the new coding guidance:
- Bronchitis and pneumonitis caused by chemicals, gases, and fumes.
- Bronchitis and pneumonitis caused by chemicals, gases, fumes, and vapors; includes chemical pneumonitis.
- Pneumonitis caused by inhalation of oils and essences; includes lipoid pneumonia.
- Acute respiratory distress syndrome.
- Pulmonary eosinophilia, not elsewhere classified.
- Acute interstitial pneumonitis.
The document notes that the coding guidance has been approved by the National Center for Health Statistics, the American Health Information Management Association, the American Hospital Association, and the Centers for Medicare & Medicaid Services.
Readmission for COPD exacerbation upped in-hospital mortality risk
NEW ORLEANS – Reduction of readmission rates among individuals hospitalized for an acute exacerbation of COPD could reduce mortality and health care expenditures, results of a large, retrospective study suggest.
said researcher Anand Muthu Krishnan, MBBS, an from the University of Connecticut, Farmington.
“This is not a small problem,” Dr. Krishnan said in a podium presentation at the annual meeting of the American College of Chest Physicians. “The amount of money that can be saved can be put into primary care for curbing COPD and better patient outcomes, basically, if you’re able to put in checkpoints to stop this problem.”
Bundled care interventions by interdisciplinary teams have thus far proven effective at improving quality of care and improving process measures in this setting, said Dr. Krishnan.
The retrospective cohort study by Dr. Krishnan and colleagues included 530,229 adult patients in the 2016 National Readmission Database who had a principal diagnosis of acute COPD exacerbation. The mean age of the patients was 68 years, and 58% were female.
The rates of readmission at 30 days after discharge were 16.3% for any cause and 5.4% specifically for COPD, the researchers found. Of note, the in-hospital mortality rate increased from 1.1% to 3.8% during readmission (P less than .01), Dr. Krishnan said.
Readmissions were linked to a cumulative length of stay of 458,677 days, with corresponding hospital costs of $0.97 billion and charges of $4.0 billion; the COPD-specific readmissions were associated with cumulative length of stay of 132,026 days, costs of $253 million, and charges of $1 billion, Dr. Krishnan reported.
Dr. Krishnan and coauthors disclosed no relationships relevant to their study.
SOURCE: Krishnan AM et al. CHEST 2019. Abstract, doi: 10.1016/j.chest.2019.08.229.
NEW ORLEANS – Reduction of readmission rates among individuals hospitalized for an acute exacerbation of COPD could reduce mortality and health care expenditures, results of a large, retrospective study suggest.
said researcher Anand Muthu Krishnan, MBBS, an from the University of Connecticut, Farmington.
“This is not a small problem,” Dr. Krishnan said in a podium presentation at the annual meeting of the American College of Chest Physicians. “The amount of money that can be saved can be put into primary care for curbing COPD and better patient outcomes, basically, if you’re able to put in checkpoints to stop this problem.”
Bundled care interventions by interdisciplinary teams have thus far proven effective at improving quality of care and improving process measures in this setting, said Dr. Krishnan.
The retrospective cohort study by Dr. Krishnan and colleagues included 530,229 adult patients in the 2016 National Readmission Database who had a principal diagnosis of acute COPD exacerbation. The mean age of the patients was 68 years, and 58% were female.
The rates of readmission at 30 days after discharge were 16.3% for any cause and 5.4% specifically for COPD, the researchers found. Of note, the in-hospital mortality rate increased from 1.1% to 3.8% during readmission (P less than .01), Dr. Krishnan said.
Readmissions were linked to a cumulative length of stay of 458,677 days, with corresponding hospital costs of $0.97 billion and charges of $4.0 billion; the COPD-specific readmissions were associated with cumulative length of stay of 132,026 days, costs of $253 million, and charges of $1 billion, Dr. Krishnan reported.
Dr. Krishnan and coauthors disclosed no relationships relevant to their study.
SOURCE: Krishnan AM et al. CHEST 2019. Abstract, doi: 10.1016/j.chest.2019.08.229.
NEW ORLEANS – Reduction of readmission rates among individuals hospitalized for an acute exacerbation of COPD could reduce mortality and health care expenditures, results of a large, retrospective study suggest.
said researcher Anand Muthu Krishnan, MBBS, an from the University of Connecticut, Farmington.
“This is not a small problem,” Dr. Krishnan said in a podium presentation at the annual meeting of the American College of Chest Physicians. “The amount of money that can be saved can be put into primary care for curbing COPD and better patient outcomes, basically, if you’re able to put in checkpoints to stop this problem.”
Bundled care interventions by interdisciplinary teams have thus far proven effective at improving quality of care and improving process measures in this setting, said Dr. Krishnan.
The retrospective cohort study by Dr. Krishnan and colleagues included 530,229 adult patients in the 2016 National Readmission Database who had a principal diagnosis of acute COPD exacerbation. The mean age of the patients was 68 years, and 58% were female.
The rates of readmission at 30 days after discharge were 16.3% for any cause and 5.4% specifically for COPD, the researchers found. Of note, the in-hospital mortality rate increased from 1.1% to 3.8% during readmission (P less than .01), Dr. Krishnan said.
Readmissions were linked to a cumulative length of stay of 458,677 days, with corresponding hospital costs of $0.97 billion and charges of $4.0 billion; the COPD-specific readmissions were associated with cumulative length of stay of 132,026 days, costs of $253 million, and charges of $1 billion, Dr. Krishnan reported.
Dr. Krishnan and coauthors disclosed no relationships relevant to their study.
SOURCE: Krishnan AM et al. CHEST 2019. Abstract, doi: 10.1016/j.chest.2019.08.229.
REPORTING FROM CHEST 2019
Opioids, benzodiazepines carry greater risk of COPD-related hospitalization
according to recent research from Annals of the American Thoracic Society.
In addition, the risk of hospitalization because of respiratory events for patients with chronic obstructive pulmonary disease (COPD) was greater when opioid and benzodiazepine medications were combined, compared with patients who did not take either medication, Jacques G. Baillargeon, PhD, of the department of preventive medicine and community health at the University of Texas, Galveston, and colleagues wrote.
“Patients with COPD and their physicians should judiciously assess the risks and benefits of opioids and benzodiazepines, alone and in combination, and preferentially recommend nonopioid and nonbenzodiazepine approaches for pain, sleep, and anxiety management in patients with COPD,” the investigators wrote.
The researchers performed a case-control study of 3,232 Medicare beneficiary cases of COPD patients who were aged at least 66 years. Patients were included if they experienced a hospitalization related to a COPD-related adverse event with a respiratory diagnosis in 2014 and then matched to one or two control patients (total, 6,247 patients) based on age at hospitalization, gender, COPD medication, COPD complexity, obstructive sleep apnea, and socioeconomic status. COPD complexity was assigned to three levels (low, moderate, high) and calculated using the patient’s comorbid respiratory conditions and associated medical procedures in the 12 months prior to their hospitalization.
They found that, in the 30 days before COPD-related hospitalization, use of opioids was associated with greater likelihood of hospitalization (adjusted odds ratio, 1.73; 95% confidence interval, 1.52-1.97), as was use of benzodiazepines (aOR, 1.42; 95% CI, 1.21-1.66). When patients used both opioids and benzodiazepines, they had a significantly higher risk of hospitalization, compared with patients who did not use opioids or benzodiazepines (aOR, 2.32; 95% CI, 1.94-2.77).
In the 60 days prior to hospitalization, there was also a greater likelihood of hospitalization among COPD patients who used opioids (aOR, 1.66; 95% CI, 1.47-1.88), benzodiazepines (aOR, 1.44; 95% CI, 1.24-1.67), and both opioids and benzodiazepines (aOR, 2.27; 95% CI, 1.93-2.67); at 90 days, this higher risk of hospitalization persisted among COPD patients taking opioids (aOR, 1.58; 95% CI, 1.40-1.78), benzodiazepines (aOR, 1.40; 95% CI, 1.20-1.63), and both opioids and benzodiazepines (aOR, 2.21; 95% CI, 1.88-2.59).
The researchers acknowledged that one potential limitation in the study was how COPD diagnoses were obtained through coding performed by clinicians instead of from laboratory testing. Confounding by COPD indication and severity; use of over-the-counter medication or opioids and benzodiazepines received illegally; and lack of analyses of potential confounders such as diet, alcohol use, smoking status and herbal supplement use were other limitations.
This study was supported by an award from the National Center for Advancing Translational Sciences and National Institutes of Health. Dr. Baillargeon had no disclosures.
SOURCE: Baillargeon JG et al. Ann Am Thorac Soc. 2019 Oct 1. doi: 10.1513/AnnalsATS.201901-024OC.
according to recent research from Annals of the American Thoracic Society.
In addition, the risk of hospitalization because of respiratory events for patients with chronic obstructive pulmonary disease (COPD) was greater when opioid and benzodiazepine medications were combined, compared with patients who did not take either medication, Jacques G. Baillargeon, PhD, of the department of preventive medicine and community health at the University of Texas, Galveston, and colleagues wrote.
“Patients with COPD and their physicians should judiciously assess the risks and benefits of opioids and benzodiazepines, alone and in combination, and preferentially recommend nonopioid and nonbenzodiazepine approaches for pain, sleep, and anxiety management in patients with COPD,” the investigators wrote.
The researchers performed a case-control study of 3,232 Medicare beneficiary cases of COPD patients who were aged at least 66 years. Patients were included if they experienced a hospitalization related to a COPD-related adverse event with a respiratory diagnosis in 2014 and then matched to one or two control patients (total, 6,247 patients) based on age at hospitalization, gender, COPD medication, COPD complexity, obstructive sleep apnea, and socioeconomic status. COPD complexity was assigned to three levels (low, moderate, high) and calculated using the patient’s comorbid respiratory conditions and associated medical procedures in the 12 months prior to their hospitalization.
They found that, in the 30 days before COPD-related hospitalization, use of opioids was associated with greater likelihood of hospitalization (adjusted odds ratio, 1.73; 95% confidence interval, 1.52-1.97), as was use of benzodiazepines (aOR, 1.42; 95% CI, 1.21-1.66). When patients used both opioids and benzodiazepines, they had a significantly higher risk of hospitalization, compared with patients who did not use opioids or benzodiazepines (aOR, 2.32; 95% CI, 1.94-2.77).
In the 60 days prior to hospitalization, there was also a greater likelihood of hospitalization among COPD patients who used opioids (aOR, 1.66; 95% CI, 1.47-1.88), benzodiazepines (aOR, 1.44; 95% CI, 1.24-1.67), and both opioids and benzodiazepines (aOR, 2.27; 95% CI, 1.93-2.67); at 90 days, this higher risk of hospitalization persisted among COPD patients taking opioids (aOR, 1.58; 95% CI, 1.40-1.78), benzodiazepines (aOR, 1.40; 95% CI, 1.20-1.63), and both opioids and benzodiazepines (aOR, 2.21; 95% CI, 1.88-2.59).
The researchers acknowledged that one potential limitation in the study was how COPD diagnoses were obtained through coding performed by clinicians instead of from laboratory testing. Confounding by COPD indication and severity; use of over-the-counter medication or opioids and benzodiazepines received illegally; and lack of analyses of potential confounders such as diet, alcohol use, smoking status and herbal supplement use were other limitations.
This study was supported by an award from the National Center for Advancing Translational Sciences and National Institutes of Health. Dr. Baillargeon had no disclosures.
SOURCE: Baillargeon JG et al. Ann Am Thorac Soc. 2019 Oct 1. doi: 10.1513/AnnalsATS.201901-024OC.
according to recent research from Annals of the American Thoracic Society.
In addition, the risk of hospitalization because of respiratory events for patients with chronic obstructive pulmonary disease (COPD) was greater when opioid and benzodiazepine medications were combined, compared with patients who did not take either medication, Jacques G. Baillargeon, PhD, of the department of preventive medicine and community health at the University of Texas, Galveston, and colleagues wrote.
“Patients with COPD and their physicians should judiciously assess the risks and benefits of opioids and benzodiazepines, alone and in combination, and preferentially recommend nonopioid and nonbenzodiazepine approaches for pain, sleep, and anxiety management in patients with COPD,” the investigators wrote.
The researchers performed a case-control study of 3,232 Medicare beneficiary cases of COPD patients who were aged at least 66 years. Patients were included if they experienced a hospitalization related to a COPD-related adverse event with a respiratory diagnosis in 2014 and then matched to one or two control patients (total, 6,247 patients) based on age at hospitalization, gender, COPD medication, COPD complexity, obstructive sleep apnea, and socioeconomic status. COPD complexity was assigned to three levels (low, moderate, high) and calculated using the patient’s comorbid respiratory conditions and associated medical procedures in the 12 months prior to their hospitalization.
They found that, in the 30 days before COPD-related hospitalization, use of opioids was associated with greater likelihood of hospitalization (adjusted odds ratio, 1.73; 95% confidence interval, 1.52-1.97), as was use of benzodiazepines (aOR, 1.42; 95% CI, 1.21-1.66). When patients used both opioids and benzodiazepines, they had a significantly higher risk of hospitalization, compared with patients who did not use opioids or benzodiazepines (aOR, 2.32; 95% CI, 1.94-2.77).
In the 60 days prior to hospitalization, there was also a greater likelihood of hospitalization among COPD patients who used opioids (aOR, 1.66; 95% CI, 1.47-1.88), benzodiazepines (aOR, 1.44; 95% CI, 1.24-1.67), and both opioids and benzodiazepines (aOR, 2.27; 95% CI, 1.93-2.67); at 90 days, this higher risk of hospitalization persisted among COPD patients taking opioids (aOR, 1.58; 95% CI, 1.40-1.78), benzodiazepines (aOR, 1.40; 95% CI, 1.20-1.63), and both opioids and benzodiazepines (aOR, 2.21; 95% CI, 1.88-2.59).
The researchers acknowledged that one potential limitation in the study was how COPD diagnoses were obtained through coding performed by clinicians instead of from laboratory testing. Confounding by COPD indication and severity; use of over-the-counter medication or opioids and benzodiazepines received illegally; and lack of analyses of potential confounders such as diet, alcohol use, smoking status and herbal supplement use were other limitations.
This study was supported by an award from the National Center for Advancing Translational Sciences and National Institutes of Health. Dr. Baillargeon had no disclosures.
SOURCE: Baillargeon JG et al. Ann Am Thorac Soc. 2019 Oct 1. doi: 10.1513/AnnalsATS.201901-024OC.
FROM ANNALS OF THE AMERICAN THORACIC SOCIETY
Adolescent lung inflammation may trigger later MS
STOCKHOLM – Scott Montgomery, PhD, said at the annual congress of the European Committee for Treatment and Research in Multiple Sclerosis.
This is speculative, he readily acknowledged, but it is a hypothesis supported by multiple lines of evidence provided by separate Swedish national health care registry studies he has led that showed associations between pneumonia or infectious mononucleosis occurring in early adolescence and increased risk of later MS.
These findings are consistent with the well-established observations that two other causes of lung irritation – cigarette smoking and exposure to organic solvents – are also linked to increased risk of MS (Neurology. 2018 Jul 31;91[5]:e455-62), noted Dr. Montgomery, head of the clinical epidemiology research group at Örebro (Sweden) University.
Moreover, he and his coinvestigators also found in yet another Swedish national registry cohort study that one concussion during adolescence was independently associated with a statistically significant 1.22-fold increased risk of later MS, while two or more were linked to a 2.33-fold increased risk. In contrast, concussions occurring before age 11 years were not associated with any increased risk of MS, which suggests an age-defined period of susceptibility (Ann Neurol. 2017 Oct;82[4]:554-61).
“There seems to be greater brain resilience in childhood as compared to adolescence,” Dr. Montgomery commented.
The new Swedish registry pneumonia study included 6,109 Swedish MS patients and 49,479 controls matched for age, gender, and locale. In an analysis adjusted for education level and history of infectious mononucleosis, history of having pneumonia at age 11-15 years was independently associated with a 2.8-fold increased risk of subsequent MS. Pneumonia occurring at age 16-20 years was associated with a more modest 1.38-fold increased risk, which did not achieve statistical significance, while pneumonia up to age 5 years or at age 6-10 years conferred no increased risk. The investigators restricted their analysis to cases of pneumonia occurring up to age 20 years because that is younger than the typical age of MS onset. The age restriction sidestepped the potential for confounding by reverse causation since it is known that pneumonia occurs with increased frequency in patients with MS.
Because MS patients also have an increased risk of urinary tract infections, Dr. Montgomery and coinvestigators also analyzed the same pediatric data set for UTI rates broken down by 5-year age groups. Rates were similar in individuals who later developed MS and in controls, which suggests that the observed increase in MS risk associated with pneumonia in early adolescence was not an expression of an MS prodromal illness, he explained.
The investigators focused on pneumonia in childhood and adolescence as a potential trigger for MS because pneumonia results in more profound and prolonged inflammation than do other common respiratory illnesses. For example, pneumonia has been shown to be linked to increased risks of cardiovascular disease and chronic kidney disease for up to 5 years after the infection.
Developmentally, age 11-15 years is a period defined by peripubertal reorganization and synaptogenesis, while synaptic pruning and axonal myelination are on the agenda at age 16-20 years, Dr. Montgomery observed.
The study of infectious mononucleosis as a potential risk factor for MS included 4,527 Swedish MS patients and 3.2 million controls, all born during 1970-2000 and followed until 2014. In this analysis, infectious mononucleosis occurring at age 11-15 years was associated with the greatest risk of subsequent MS, with an associated 3.47-fold greater risk of the neurologic disease versus that seen in patients who did not have infectious mononucleosis at age 11-15 years
“It does look like a causal association between Epstein-Barr virus infection and subsequent MS,” according to Dr. Montgomery.
He noted that a plausible mechanism by which lung inflammation could predispose future MS has been put forth by German investigators. Using an animal model, they demonstrated that autoreactive T cells are prepared in bronchus-associated lymphoid tissue and attain a migratory profile allowing them to cross the blood-brain barrier and induce CNS autoimmune disease (Nature. 2012 Aug 30;488[7413]:675-9).
All of this, as Dr. Montgomery emphasized, is speculative at this point in regard to MS pathogenesis. What is not speculative, he continued, is the solid evidence that infection-related mortality after diagnosis of MS has gone down substantially in the current era of newer disease-modifying treatments, as he and his coinvestigators have demonstrated (Neurology. 2017 Aug 8;89[6]:555-62).
“People with MS, compared to the general population, are still at increased risk, but not nearly as much as the infection-related mortality risk present back in the 1960s-80s. So things have improved somewhat,” Dr. Montgomery said.
Which MS patients are at increased risk for mortality caused by infection? His Swedish national registry research demonstrates that the risk is essentially confined to patients with secondary or primary progressive MS or an Expanded Disability Status Scale score of 6 or more.
Another new study he presented at the meeting focused on the types of infections that are more common in a contemporary MS population than in MS-free individuals. This Swedish national cohort study included 6,602 patients diagnosed with MS during 2008-2016 and 61,828 age-, sex-, and location-matched controls. Infections serious enough to have resulted in hospitalization occurred 2.59 times more frequently in the MS population. The risk of meningitis and encephalitis was increased 6.16-fold, opportunistic infections were 2.72-fold more frequent, the risk of urinary tract and kidney infections was increased 2.44-fold, herpes virus infections were increased 2.32-fold, and the combined rate of pneumonia and influenza was roughly double that seen in the matched general population.
Dr. Montgomery reported receiving research funding from F. Hoffmann–La Roche, Novartis, and AstraZeneca and serving on an advisory board for IQVIA.
SOURCE: Montgomery S. ECTRIMS 2019, Abstract 270.
STOCKHOLM – Scott Montgomery, PhD, said at the annual congress of the European Committee for Treatment and Research in Multiple Sclerosis.
This is speculative, he readily acknowledged, but it is a hypothesis supported by multiple lines of evidence provided by separate Swedish national health care registry studies he has led that showed associations between pneumonia or infectious mononucleosis occurring in early adolescence and increased risk of later MS.
These findings are consistent with the well-established observations that two other causes of lung irritation – cigarette smoking and exposure to organic solvents – are also linked to increased risk of MS (Neurology. 2018 Jul 31;91[5]:e455-62), noted Dr. Montgomery, head of the clinical epidemiology research group at Örebro (Sweden) University.
Moreover, he and his coinvestigators also found in yet another Swedish national registry cohort study that one concussion during adolescence was independently associated with a statistically significant 1.22-fold increased risk of later MS, while two or more were linked to a 2.33-fold increased risk. In contrast, concussions occurring before age 11 years were not associated with any increased risk of MS, which suggests an age-defined period of susceptibility (Ann Neurol. 2017 Oct;82[4]:554-61).
“There seems to be greater brain resilience in childhood as compared to adolescence,” Dr. Montgomery commented.
The new Swedish registry pneumonia study included 6,109 Swedish MS patients and 49,479 controls matched for age, gender, and locale. In an analysis adjusted for education level and history of infectious mononucleosis, history of having pneumonia at age 11-15 years was independently associated with a 2.8-fold increased risk of subsequent MS. Pneumonia occurring at age 16-20 years was associated with a more modest 1.38-fold increased risk, which did not achieve statistical significance, while pneumonia up to age 5 years or at age 6-10 years conferred no increased risk. The investigators restricted their analysis to cases of pneumonia occurring up to age 20 years because that is younger than the typical age of MS onset. The age restriction sidestepped the potential for confounding by reverse causation since it is known that pneumonia occurs with increased frequency in patients with MS.
Because MS patients also have an increased risk of urinary tract infections, Dr. Montgomery and coinvestigators also analyzed the same pediatric data set for UTI rates broken down by 5-year age groups. Rates were similar in individuals who later developed MS and in controls, which suggests that the observed increase in MS risk associated with pneumonia in early adolescence was not an expression of an MS prodromal illness, he explained.
The investigators focused on pneumonia in childhood and adolescence as a potential trigger for MS because pneumonia results in more profound and prolonged inflammation than do other common respiratory illnesses. For example, pneumonia has been shown to be linked to increased risks of cardiovascular disease and chronic kidney disease for up to 5 years after the infection.
Developmentally, age 11-15 years is a period defined by peripubertal reorganization and synaptogenesis, while synaptic pruning and axonal myelination are on the agenda at age 16-20 years, Dr. Montgomery observed.
The study of infectious mononucleosis as a potential risk factor for MS included 4,527 Swedish MS patients and 3.2 million controls, all born during 1970-2000 and followed until 2014. In this analysis, infectious mononucleosis occurring at age 11-15 years was associated with the greatest risk of subsequent MS, with an associated 3.47-fold greater risk of the neurologic disease versus that seen in patients who did not have infectious mononucleosis at age 11-15 years
“It does look like a causal association between Epstein-Barr virus infection and subsequent MS,” according to Dr. Montgomery.
He noted that a plausible mechanism by which lung inflammation could predispose future MS has been put forth by German investigators. Using an animal model, they demonstrated that autoreactive T cells are prepared in bronchus-associated lymphoid tissue and attain a migratory profile allowing them to cross the blood-brain barrier and induce CNS autoimmune disease (Nature. 2012 Aug 30;488[7413]:675-9).
All of this, as Dr. Montgomery emphasized, is speculative at this point in regard to MS pathogenesis. What is not speculative, he continued, is the solid evidence that infection-related mortality after diagnosis of MS has gone down substantially in the current era of newer disease-modifying treatments, as he and his coinvestigators have demonstrated (Neurology. 2017 Aug 8;89[6]:555-62).
“People with MS, compared to the general population, are still at increased risk, but not nearly as much as the infection-related mortality risk present back in the 1960s-80s. So things have improved somewhat,” Dr. Montgomery said.
Which MS patients are at increased risk for mortality caused by infection? His Swedish national registry research demonstrates that the risk is essentially confined to patients with secondary or primary progressive MS or an Expanded Disability Status Scale score of 6 or more.
Another new study he presented at the meeting focused on the types of infections that are more common in a contemporary MS population than in MS-free individuals. This Swedish national cohort study included 6,602 patients diagnosed with MS during 2008-2016 and 61,828 age-, sex-, and location-matched controls. Infections serious enough to have resulted in hospitalization occurred 2.59 times more frequently in the MS population. The risk of meningitis and encephalitis was increased 6.16-fold, opportunistic infections were 2.72-fold more frequent, the risk of urinary tract and kidney infections was increased 2.44-fold, herpes virus infections were increased 2.32-fold, and the combined rate of pneumonia and influenza was roughly double that seen in the matched general population.
Dr. Montgomery reported receiving research funding from F. Hoffmann–La Roche, Novartis, and AstraZeneca and serving on an advisory board for IQVIA.
SOURCE: Montgomery S. ECTRIMS 2019, Abstract 270.
STOCKHOLM – Scott Montgomery, PhD, said at the annual congress of the European Committee for Treatment and Research in Multiple Sclerosis.
This is speculative, he readily acknowledged, but it is a hypothesis supported by multiple lines of evidence provided by separate Swedish national health care registry studies he has led that showed associations between pneumonia or infectious mononucleosis occurring in early adolescence and increased risk of later MS.
These findings are consistent with the well-established observations that two other causes of lung irritation – cigarette smoking and exposure to organic solvents – are also linked to increased risk of MS (Neurology. 2018 Jul 31;91[5]:e455-62), noted Dr. Montgomery, head of the clinical epidemiology research group at Örebro (Sweden) University.
Moreover, he and his coinvestigators also found in yet another Swedish national registry cohort study that one concussion during adolescence was independently associated with a statistically significant 1.22-fold increased risk of later MS, while two or more were linked to a 2.33-fold increased risk. In contrast, concussions occurring before age 11 years were not associated with any increased risk of MS, which suggests an age-defined period of susceptibility (Ann Neurol. 2017 Oct;82[4]:554-61).
“There seems to be greater brain resilience in childhood as compared to adolescence,” Dr. Montgomery commented.
The new Swedish registry pneumonia study included 6,109 Swedish MS patients and 49,479 controls matched for age, gender, and locale. In an analysis adjusted for education level and history of infectious mononucleosis, history of having pneumonia at age 11-15 years was independently associated with a 2.8-fold increased risk of subsequent MS. Pneumonia occurring at age 16-20 years was associated with a more modest 1.38-fold increased risk, which did not achieve statistical significance, while pneumonia up to age 5 years or at age 6-10 years conferred no increased risk. The investigators restricted their analysis to cases of pneumonia occurring up to age 20 years because that is younger than the typical age of MS onset. The age restriction sidestepped the potential for confounding by reverse causation since it is known that pneumonia occurs with increased frequency in patients with MS.
Because MS patients also have an increased risk of urinary tract infections, Dr. Montgomery and coinvestigators also analyzed the same pediatric data set for UTI rates broken down by 5-year age groups. Rates were similar in individuals who later developed MS and in controls, which suggests that the observed increase in MS risk associated with pneumonia in early adolescence was not an expression of an MS prodromal illness, he explained.
The investigators focused on pneumonia in childhood and adolescence as a potential trigger for MS because pneumonia results in more profound and prolonged inflammation than do other common respiratory illnesses. For example, pneumonia has been shown to be linked to increased risks of cardiovascular disease and chronic kidney disease for up to 5 years after the infection.
Developmentally, age 11-15 years is a period defined by peripubertal reorganization and synaptogenesis, while synaptic pruning and axonal myelination are on the agenda at age 16-20 years, Dr. Montgomery observed.
The study of infectious mononucleosis as a potential risk factor for MS included 4,527 Swedish MS patients and 3.2 million controls, all born during 1970-2000 and followed until 2014. In this analysis, infectious mononucleosis occurring at age 11-15 years was associated with the greatest risk of subsequent MS, with an associated 3.47-fold greater risk of the neurologic disease versus that seen in patients who did not have infectious mononucleosis at age 11-15 years
“It does look like a causal association between Epstein-Barr virus infection and subsequent MS,” according to Dr. Montgomery.
He noted that a plausible mechanism by which lung inflammation could predispose future MS has been put forth by German investigators. Using an animal model, they demonstrated that autoreactive T cells are prepared in bronchus-associated lymphoid tissue and attain a migratory profile allowing them to cross the blood-brain barrier and induce CNS autoimmune disease (Nature. 2012 Aug 30;488[7413]:675-9).
All of this, as Dr. Montgomery emphasized, is speculative at this point in regard to MS pathogenesis. What is not speculative, he continued, is the solid evidence that infection-related mortality after diagnosis of MS has gone down substantially in the current era of newer disease-modifying treatments, as he and his coinvestigators have demonstrated (Neurology. 2017 Aug 8;89[6]:555-62).
“People with MS, compared to the general population, are still at increased risk, but not nearly as much as the infection-related mortality risk present back in the 1960s-80s. So things have improved somewhat,” Dr. Montgomery said.
Which MS patients are at increased risk for mortality caused by infection? His Swedish national registry research demonstrates that the risk is essentially confined to patients with secondary or primary progressive MS or an Expanded Disability Status Scale score of 6 or more.
Another new study he presented at the meeting focused on the types of infections that are more common in a contemporary MS population than in MS-free individuals. This Swedish national cohort study included 6,602 patients diagnosed with MS during 2008-2016 and 61,828 age-, sex-, and location-matched controls. Infections serious enough to have resulted in hospitalization occurred 2.59 times more frequently in the MS population. The risk of meningitis and encephalitis was increased 6.16-fold, opportunistic infections were 2.72-fold more frequent, the risk of urinary tract and kidney infections was increased 2.44-fold, herpes virus infections were increased 2.32-fold, and the combined rate of pneumonia and influenza was roughly double that seen in the matched general population.
Dr. Montgomery reported receiving research funding from F. Hoffmann–La Roche, Novartis, and AstraZeneca and serving on an advisory board for IQVIA.
SOURCE: Montgomery S. ECTRIMS 2019, Abstract 270.
REPORTING FROM ECTRIMS 2019