Abstract
Summary. Anticoagulant therapy in severe COVID-19 raises bleeding risk. We considered 16 medical stories of inhospital patients with severe COVID-19 complicated with bleeding. Anticoagulant treatment with mainly low molecular weight heparins (LMWHs) in therapeutic doses was performed for all of them. Main revealed causes for hemorrhagic complications were invasive interven- tions, and tissue compression due to prone position, and an excessive anticoagulation with anti-Xa>1.0 ME/mL. Anticoagulant excess was developed because of what the creatinine clearance was not considered for LMWHs dosing. Obtained results show the thrombotic/bleeding risk ratio together with renal function should be evaluated mandatory before anticoagulant starting in patients with severe COVID-19. In such patients LMWHs doses have to be adjusted so that the anti-Xa don’t exceed 1.0 ME/mL. With caution we guess joint pharmacological and mechanical (including the intermittent pneumatic compression) antithrombotic prophylaxis is able to lower bleeding risk in patients with severe COVID-19.
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