Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been associated with thrombotic phenomena in the early stages of the disease, but also, less frequently, with major bleeding between the second and third week after onset, particularly in patients treated with therapeutic anticoagulation. This article describes four cases of patients admitted to the hospital with severe SARS-CoV-2 pneumonia who had arterial bleeding as a complication while on low-molecular-weight heparin at therapeutic doses. Half of the patients were women.