COVID-19 Clinical Trial
Official title:
Intermediate or Prophylactic-Dose Anticoagulation for Venous or Arterial Thromboembolism in Severe COVID-19: A Cluster Based Randomized Selection Trial (IMPROVE-COVID)
This study is being conducted to assess the effectiveness of intermediate versus prophylactic doses of anticoagulation (blood thinners) in patients critically ill with COVID-19 in the intensive care units (ICUs) throughout the hospital. Anticoagulation is part of the patient's usual standard of care but determining the dose of anticoagulation is based on physician preference. The investigators are conducting this study (a randomized trial with adaptive design employing cluster randomization) with the support of all of the ICUs to collect data in order to determine what should be the standard of care in terms of anticoagulation in these critically ill patients. The patients care will not be altered other than the choice of anticoagulation (both approved and used throughout the hospital as standard of care) based on the ICU bed they are assigned. Patient data will be collected until discharge.
Hemostatic, biomarker, and inflammatory changes are common in severe manifestations of coronavirus disease 2019 (COVID-19).Such factors, as well as the bedridden status and critical illness may constitute a prothrombotic milieu, predisposing to venous and arterial thrombosis. However, the optimal antithrombotic regimen for patients with COVID-19, especially those with severe disease, remains uncertain and is currently an area of active clinical interest. Prophylactic-dose anticoagulation is generally recommended for acutely ill hospitalized patients. However, given the hemostatic abnormalities of severe COVID-19 illness, it is unknown whether more intensive anticoagulation is preferred to reduce the risk of thrombotic events, potentially mitigating microvascular and macrovascular thrombi and even disseminated intravascular coagulation (DIC). Further, the risks of therapeutic dose anticoagulation must be weighed against the bleeding risks inherent to this approach. To address this critical gap in knowledge in an area of clinical equipoise, the investigators plan to conduct a cluster-randomized trial in patients admitted to intensive care units (ICUs) in a large volume academic medical center to select the best anticoagulation intervention. ;
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