ADAMTS13 activity to von Willebrand factor antigen ratio predicts acute kidney injury in patients with COVID‐19: Evidence of SARS‐CoV‐2 induced secondary thrombotic microangiopathy

Severe COVID-19 is often compounded by a prothrombotic state that is associated with poor outcomes. In this investigation, we aimed to evaluate ADAMTS13 activity, von Willebrand factor level (VWF:Ag), and the corresponding ADAMTS13 activity/VWF:Ag ratio, in patients with COVID-19 and for associations with disease progression and acute kidney injury (AKI).Patients presenting to the emergency department (ED) with COVID-19 were enrolled in this...