BACKGROUND: Both unfractionated heparin (UFH) and low-molecular-weight heparin (LMWH) are approved for venous thromboembolism (VTE) prophylaxis. Which agent is superior remains controversial.

Low molecular weight heparin (LMWH) is an anticoagulant injected subcutaneously or intravenously and acts via activation of antithrombin III which in turn inactivates thrombin and factor Xa to ...

Risks from anticoagulation appeared highest with low-molecular-weight heparin on observational analysis. Registry study of 600-plus pregnancies represents the largest cohort of pregnant women with ...