Unfractionated Heparin in COVID-19 and Non-COVID-19 Patients

The majority of ICU patients with COVID-19 show profound activation of coagulation, potentially resulting in thromboembolic events. In the treatment of these thromboembolic events it seemed that very high dosages of unfractionated heparin were necessary to achieve therapeutic values of aPTT and anti-Xa levels. The aim of this study is to explore whether heparin dosages are higher in COVID-19 patients compared to non-COVID-19 patients, to determine the correlation between aPTT and anti-Xa values and to explore possible causes for non-correlating aPTT and anti-Xa, including CRP and AT plasma levels.