Summary
Pulmonary embolism (PE) remains a major clinical problem associated with considerable
mortality and morbidity. In patients with PE, appropriate anticoagulant therapy has
been shown to significantly reduce both recurrence and mortality. Low-molecular- weight
heparin (LMWH) is at least as effective as unfractionated heparin (UFH) in the treatment
of PE,with a similar risk of bleeding. Furthermore, LMWH offers more predictable pharmacokinetics
and anticoagulant effects. As a result, current guidelines from both the American
College of Chest Physicians and the joint American College of Physicians/American
Academy of Family Physicians recommend the use of LMWH over UFH (in patients with
submassive PE). Outpatient treatment with LMWH has been shown to be feasible in many
patients,and offers the potential for cost-savings and improvements in healthrelated
quality of life. Further data are needed to support an evidence- based recommendation
for the use of LMWH in the outpatient treatment of PE.
Keywords
Anticoagulants - low-molecular-weight heparin - pulmonary embolism - thromboembolism