Table 1.

Thromboprophylaxis Regimes from Studies Reporting the Incidence of VTE in Patients with COVID-19 Infection

Study	Heparin	Dose	Patient Cohort
Tang and colleagues (4)	Enoxaparin	40–60 mg once daily	ITU
	UFH	10–15,000 u once daily
Klok and colleagues (5)	Nadroparin	2,850 IU once daily* increased in some to 5,700 IU twice daily later in study†	ITU
Helms and colleagues (6)	Not stated	Prophylactic/therapeutic	ITU
Middeldorp and colleagues (7)	Nadroparin	2,850 IU once daily increased to twice daily later in study*	ITU
	Nadroparin	2,850 IU once daily	Ward

Definition of abbreviations: COVID-19 = coronavirus disease; ITU = intensive therapy unit; UFH = unfractionated heparin; VTE = venous thromboembolism.

^*5,700 IU once daily for patients weighing more than 100 kg.

^†For patients weighing more than 100 kg, the dose was increased to 5,700 IU twice daily.