• Lene Russell, Sarah Weihe, Emilie Kabel Madsen, Christine Lodberg Hvas, Jens Wolfgang Leistner, Jens Michelsen, Anne Craveiro Brøchner, Anders Bastiansen, NielsenFrederik MølgaardFM0000-0002-0071-1203Department of Anaesthesiology and Intensive Care, Aalborg University Hospital, Aalborg, Denmark., Nick Meier, Anne Sofie Andreasen, Niels-Erik Ribergaard, Bodil Steen Rasmussen, Christoffer Grant Sølling, David Levarett Buck, Helle Bundgaard, Helle Scharling Pedersen, Iben Strøm Darfelt, Lone Musaeus Poulsen, Michael Ibsen, Ronni R Plovsing, Sigurdur T Sigurdsson, Susanne Iversen, Thomas Hildebrandt, Thomas Mohr, Ulrick Skipper Espelund, Vibeke Jørgensen, Nicolai Haase, and Anders Perner.
• Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
• Acta Anaesthesiol Scand. 2023 Jan 1; 67 (1): 768576-85.

BackgroundIntensive care unit (ICU) patients with Coronavirus disease 2019 (COVID-19) have an increased risk of thromboembolic complications. We describe the occurrence of thromboembolic and bleeding events in all ICU patients with COVID-19 in Denmark during the first and second waves of the pandemic.MethodsThis was a sub-study of the Danish Intensive Care Covid database, in which all patients with SARS-CoV-2 admitted to Danish ICUs from 10th March 2020 to 30th June 2021 were included. We registered coagulation variables at admission, and all thromboembolic and bleeding events, and the use of heparins during ICU stay. Variables associated with thrombosis and bleeding and any association with 90-day mortality were estimated using Cox regression analyses.ResultsWe included 1369 patients in this sub-study; 158 (12%, 95% confidence interval 10-13) had a thromboembolic event in ICU and 309 (23%, 20-25) had a bleeding event, among whom 81 patients (6%, 4.8-7.3) had major bleeding. We found that mechanical ventilation and increased D-dimer were associated with thrombosis and mechanical ventilation, low platelet count and presence of haematological malignancy were associated with bleeding. Most patients (76%) received increased doses of thromboprophylaxis during their ICU stay. Thromboembolic events were not associated with mortality in adjusted analysis (hazard ratio 1.35 [0.91-2.01, p = .14], whereas bleeding events were 1.55 [1.18-2.05, p = .002]).ConclusionsBoth thromboembolic and bleeding events frequently occurred in ICU patients with COVID-19. Based on these data, it is not apparent that increased doses of thromboprophylaxis were beneficial.© 2022 The Authors. Acta Anaesthesiologica Scandinavica published by John Wiley & Sons Ltd on behalf of Acta Anaesthesiologica Scandinavica Foundation.

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