PMID- 11981112 OWN - NLM STAT- MEDLINE DCOM- 20020607 LR - 20191105 IS - 0929-5305 (Print) IS - 0929-5305 (Linking) VI - 12 IP - 3 DP - 2001 Dec TI - Low molecular weight heparin and unfractionated heparin in the early pharmacologic management of acute coronary syndromes: a meta-analysis of randomized clinical trials. PG - 289-95 AB - BACKGROUND: The standard of care in Acute Coronary Syndromes (ACS) includes a full complement of antischemic and antithrombotic therapy. Although aspirin is used widely and concomitant anticoagulation is recommended, the comparative benefits of low molecular weight heparin (LMWH) and unfractionated heparin (UFH) have not been defined. METHODS/RESULTS: A meta-analysis including all randomized clinical trials comparing LMWH and UFH for the treatment of non-ST segment elevation acute coronary syndromes was performed. Risk ratios (RR), using the DerSimonian-Laird Model, were calculated from a total of 13,320 patients. Death (RR 0.98, 95% CI 0.73-1.31), death and myocardial infarction (MI) (RR 0.86, 95% CI 0.74-1.01), death, MI, recurrent angina or revascularization (RR 0.89, 95% CI 0.74-1.07) and major hemorrhage (RR 1.01, 95% CI 0.81-1.25) occurred with similar frequencies for the anticoagulant-based strategies. CONCLUSIONS: Fixed dose LMWH therapy given subcutaneously compares favorably with UFH titrated to a target level of anticoagulation and should be considered a safe, effective, and clinically acceptable alternative in the early management of patients with non-ST segment elevation ACS. The superiority of LMWH preparations characterized by high in vitro factor Xa to thrombin inhibitory capacity is supported by clinic trial data but requires further investigation. FAU - Le Nguyen, M T AU - Le Nguyen MT AD - Cardiovascular Thrombosis Research Center, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01655, USA. FAU - Spencer, F A AU - Spencer FA LA - eng PT - Comparative Study PT - Journal Article PT - Meta-Analysis PL - Netherlands TA - J Thromb Thrombolysis JT - Journal of thrombosis and thrombolysis JID - 9502018 RN - 0 (Heparin, Low-Molecular-Weight) RN - 9005-49-6 (Heparin) SB - IM MH - Acute Disease MH - Angina, Unstable/drug therapy/prevention & control MH - Coronary Disease/complications/*drug therapy/mortality MH - Disease Management MH - Heparin/*administration & dosage MH - Heparin, Low-Molecular-Weight/*administration & dosage MH - Humans MH - Myocardial Infarction/drug therapy/prevention & control MH - Myocardial Revascularization/statistics & numerical data MH - Odds Ratio MH - Randomized Controlled Trials as Topic MH - Syndrome EDAT- 2002/05/01 10:00 MHDA- 2002/06/12 10:01 CRDT- 2002/05/01 10:00 PHST- 2002/05/01 10:00 [pubmed] PHST- 2002/06/12 10:01 [medline] PHST- 2002/05/01 10:00 [entrez] AID - 10.1023/a:1015287311065 [doi] PST - ppublish SO - J Thromb Thrombolysis. 2001 Dec;12(3):289-95. doi: 10.1023/a:1015287311065.