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?:abstract
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OBJECTIVE: To better characterize COVID-19 patients most at risk for severe, outpatient thrombosis by defining patients hospitalized with COVID-19 with an arterial or venous thrombosis diagnosed at admission METHODS AND RESULTS: We conducted a single center retrospective analysis of COVID-19 patients. There was a shift in the proportions of thrombosis subtypes from 2019 to 2020, with declines in STEMI (from 22.0% to 10.1% of thrombotic events) and stroke (from 48.6% to 37.2%), and an increase in the proportion of patients with VTE (29.4% to 52.7%). COVID-associated thrombosis were younger (58 years vs. 64 years, p=0.043), trended to be less frequently female (31.3% vs. 43.9%, p =0.16), but there was no difference body mass index or major comorbidities between those with and without COVID-19. COVID-19-associted thrombosis was correlated with a higher mortality (15.2% vs. 4.3%, p=0.016). The biometric profile of patients admitted with COVID-associated thrombosis compared to regular thrombosis had significant changes in the complete blood count, liver function tests, d-dimer, c-related protein, ferritin, and coagulation panels. CONCLUSIONS: Outpatients with COVID-19 who developed thrombosis requiring hospitalization have an increased mortality over non-COVID-19 outpatients who develop thrombosis requiring hospitalization. Given the significantly higher inflammatory markers, it is possible this is related to different mechanisms of thrombotic disease in these patients. The inflammation may be a target to reduce the risk of or aid in the treatment of thrombosis. We call for more studies elucidating the role immunothrombosis maybe playing in COVID.
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