Table 2.

The American Society of Hematology guidelines to treat thromboembolism in COVID-19 patients.

Severity of Illness	Recommendation
Critically ill patients who do not have confirmed or suspected venous thromboembolism	Use prophylactic-intensity over intermediate-intensity anticoagulation (low certainty of evidence) Use prophylactic-intensity over therapeutic-intensity anticoagulation (conditional recommendation based on very low certainty in the evidence about effects)
Acutely ill patients who do not have confirmed or suspected venous thromboembolism or another indication for anticoagulation	Use therapeutic-intensity over prophylactic-intensity anticoagulation (conditional recommendation based on very low certainty in the evidence about effects). Use prophylactic-intensity over intermediate-intensity anticoagulation
Patients being discharged from hospital and do not have confirmed or suspected venous thromboembolism	Use outpatient anticoagulant thromboprophylaxis (conditional recommendation based on very low certainty in the evidence about effects).