Journal
AMERICAN HEART JOURNAL
Volume 231, Issue -, Pages 93-95Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.ahj.2020.10.075
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Funding
- National Heart, Lung, And Blood Institute of the National Institutes of Health [K23HL150315]
- National Heart and Lung Blood Institute of the National Institute of Health [R01HL139909, R35HL144993]
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The study compared the incidence of thrombosis in patients hospitalized with non-COVID-19 acute viral respiratory illnesses from 2012 to 2014 to those hospitalized with COVID-19 in a large health system in New York. It was found that the risk of thrombosis was lower in patients with viral respiratory illnesses compared to those with COVID-19. Further investigations into thrombosis mechanisms and risk reduction strategies in viral respiratory infections are needed.
We evaluated the incidence of thrombosis in patients hospitalized with non-COVID-19 acute viral respiratory illnesses nationwide from 2012 to 2014 and compared this to the incidence among patients hospitalized with COVID-19 at a large health system in New York. Non-COVID-19 viral respiratory illness was complicated by acute MI in 2.8% of hospitalizations, VTE in 1.6%, ischemic stroke in 0.7%, and other systemic embolism in 0.1%. The proportion of hospitalizations complicated by thrombosis was lower in patients with viral respiratory illness in 2002-2014 than in COVID-19 (5% vs 16%; P < .001). Background Thrombosis is a prominent feature of the novel Coronavirus disease 2019 (COVID-19). The incidence of thrombosis during hospitalization for non-COVID-19 viral respiratory infections is uncertain. We evaluated the incidence of thrombosis in patients hospitalized with non-COVID-19 acute viral respiratory illnesses compared to COVID-19. Methods Adults age > 18 years hospitalized with a non-COVID-19 viral respiratory illness between 2002 and 2014 were identified. The primary study outcome was a composite of venous and arterial thrombotic events, including myocardial infarction (MI), acute ischemic stroke, and venous thromboembolism (VTE), as defined by ICD-9 codes. The incidence of thrombosis in non-COVID-19 viral respiratory illnesses was compared to the recently published incidence of thrombosis in COVID-19 from 3,334 patients hospitalized in New York in 2020. Results Among 954,521 hospitalizations with viral pneumonia from 2002 to 2014 (mean age 62.3 years, 57.1% female), the combined incidence of arterial and venous thrombosis was 5.0%. Acute MI occurred in 2.8% of hospitalizations, VTE in 1.6%, ischemic stroke in 0.7%, and other systemic embolism in 0.1%. Patients with thrombosis had higher in-hospital mortality (14.9% vs 3.3%, P < .001) than those without thrombosis. The proportion of hospitalizations complicated by thrombosis was lower in patients with viral respiratory illness in 2002-2014 than in COVID-19 (median age 64; 39.6% female) in 2020 (5% vs 16%; P < .001) Conclusion In a nationwide analysis of hospitalizations for viral pneumonias, thrombosis risk was lower than that observed in patients with COVID-19. Investigations into mechanisms of thrombosis and risk reduction strategies in COVID-19 and other viral respiratory infections are necessary.
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