High incidence of venous thromboembolic events in anticoagulated severe COVID‐19 patients

• Published in: Journal of thrombosis and haemostasis Vol. 18; no. 7; pp. 1743 - 1746
• Main Authors: Llitjos, Jean‐François, Leclerc, Maxime, Chochois, Camille, Monsallier, Jean‐Michel, Ramakers, Michel, Auvray, Malika, Merouani, Karim
• Format: Journal Article
• Language: English
• Published: England Elsevier Limited 01.07.2020; John Wiley and Sons Inc
• Subjects: Aged; Ankle; Anticoagulants - therapeutic use; anticoagulation; Betacoronavirus - pathogenicity; Blood Coagulation - drug effects; Brief Report; Coronavirus Infections - blood; Coronavirus Infections - drug therapy; Coronavirus Infections - epidemiology; Coronavirus Infections - virology; COVID-19; critical care; Embolism; Female; France - epidemiology; Health risk assessment; Host-Parasite Interactions; Humans; Hypoxemia; Incidence; Intensive care units; Male; Middle Aged; Pandemics; Pneumonia, Viral - blood; Pneumonia, Viral - drug therapy; Pneumonia, Viral - epidemiology; Pneumonia, Viral - virology; pulmonary embolism; Pulmonary Embolism - blood; Pulmonary Embolism - epidemiology; Pulmonary Embolism - prevention & control; Pulmonary Embolism - virology; Pulmonary embolisms; Retrospective Studies; Risk Factors; SARS-CoV-2; Severity of Illness Index; Thromboembolism; THROMBOSIS; Treatment Outcome; Ultrasound; venous thromboembolism; Venous Thromboembolism - blood; Venous Thromboembolism - epidemiology; Venous Thromboembolism - prevention & control; Venous Thromboembolism - virology; Venous Thrombosis - blood; Venous Thrombosis - epidemiology; Venous Thrombosis - prevention & control; Venous Thrombosis - virology; France; COVID-19; critical care; SARS-CoV-2; pulmonary embolism; venous thromboembolism; anticoagulation
• ISSN: 1538-7933; 1538-7836; 1538-7836
• DOI: 10.1111/jth.14869

Background Coagulopathy is a common abnormality in patients with COVID‐19. However, the exact incidence of venous thromboembolic event is unknown in anticoagulated, severe COVID‐19 patients. Objectives Systematic assessment of venous thromboembolism (VTE) using complete duplex ultrasound (CDU) in anticoagulated COVID‐19 patients. Patients and methods We performed a retrospective study in 2 French intensive care units (ICU) where CDU is performed as a standard of care. A CDU from thigh to ankle at selected sites with Doppler waveforms and images was performed early during ICU stay in patients admitted with COVID‐19. Anticoagulation dose was left to the discretion of the treating physician based on the individual risk of thrombosis. Patients were classified as treated with prophylactic anticoagulation or therapeutic anticoagulation. Pulmonary embolism was systematically searched in patients with persistent hypoxemia or secondary deterioration. Results From March 19 to April 11, 2020, 26 consecutive patients with severe COVID‐19 were screened for VTE. Eight patients (31%) were treated with prophylactic anticoagulation, whereas 18 patients (69%) were treated with therapeutic anticoagulation. The overall rate of VTE in patients was 69%. The proportion of VTE was significantly higher in patients treated with prophylactic anticoagulation when compared with the other group (100% vs 56%, respectively, P = .03). Surprisingly, we found a high rate of thromboembolic events in COVID‐19 patients treated with therapeutic anticoagulation, with 56% of VTE and 6 pulmonary embolisms. Conclusion Our results suggest considering both systematic screening of VTE and early therapeutic anticoagulation in severe ICU COVID‐19 patients.