Venous Thromboembolism Prevention with LMWHs in Medical and Orthopedic Surgery Patients
2003
OBJECTIVE:To discuss the role of low-molecular-weight heparins (LMWHs) in the prevention of venous thromboembolism (VTE) in medical and orthopedic surgery patients. VTE prophylaxis trials in these practice settings establishing the current use of LMWHs marketed in the US are included. An overview is also provided of VTE incidence, risk factors, and prophylaxis consensus guidelines.DATA SOURCES AND STUDY SELECTION:Clinical trials, review articles, and meta-analyses for Food and Drug Administration–approved LMWHs were identified from a MEDLINE search (1980–March 2002). Search terms included dalteparin, enoxaparin, internal medicine, low-molecular-weight heparin, orthopedic surgery, risk factors, tinzaparin, and venous thromboembolism.DATA SYNTHESIS:Consensus guidelines are useful as an initial guide to appropriate VTE prophylaxis; however, a review of the primary literature is needed to identify optimal agents, regimens, or interventions. LMWHs have demonstrated sound efficacy in VTE prevention; however, th...
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