PMID- 19609890 OWN - NLM STAT- MEDLINE DCOM- 20100222 LR - 20211020 IS - 1932-8737 (Electronic) IS - 0160-9289 (Print) IS - 0160-9289 (Linking) VI - 32 IP - 7 DP - 2009 Jul TI - Adjunctive low molecular weight heparin during fibrinolytic therapy in acute ST-segment elevation myocardial infarction: a meta-analysis of randomized control trials. PG - 358-64 LID - 10.1002/clc.20432 [doi] AB - BACKGROUND: Recent data suggests that low molecular weight heparins (LMWHs) may be superior to unfractionated heparin (UFH) as an adjunct to fibrinolytic therapy in patients with acute ST-segment elevation myocardial infarction (STEMI). HYPOTHESIS: We evaluated cardiac outcomes and the risk of major bleeding with LMWHs vs UFH in the management of STEMI. METHODS: Seven randomized trials of patients with acute STEMI treated with fibrinolytic therapy and adjunctive LMWHs through the index hospitalization or weight-based UFH for at least 48 hours were identified. We analyzed both primary endpoints (death and nonfatal recurrent myocardial infarction through 30 days), and secondary endpoints (death, recurrent myocardial infarction, and major bleeding during index hospitalization at 7 days). Outcomes were computed using the Mantel-Haenszel fixed-effect model. A 2-sided alpha error of < 0.05 was considered significant. RESULTS: Compared to UFH, LMWH significantly reduced reinfarction (p < 0.001) during hospitalization at 7 days and the effect remained consistent at 30 d (p < 0.001). When analyzed for mortality at 7 days and 30 days follow-up, there were no statistically significant differences observed between the 2 groups. Additionally the LMWH group had higher risk of major bleeding (p < 0.001). CONCLUSIONS: The present meta-analysis suggests in patients receiving fibrinolytic therapy for STEMI, LMWHs as an adjunctive therapy is superior to UFH in reducing reinfarction during hospitalization at 7 days and at 30 days. The mortality was not significant between the 2 groups during hospitalization at 7 days and at 30 days. However, UFH is superior to LMWHs in the reduction of major bleeding at 7 days index hospitalization. FAU - Singh, Sarabjeet AU - Singh S AD - Department of Medicine, Chicago Medical School, North Chicago, Illinois 60064, USA. sarabjeetsingh_2000@yahoo.com FAU - Bahekar, Amol AU - Bahekar A FAU - Molnar, Janos AU - Molnar J FAU - Khosla, Sandeep AU - Khosla S FAU - Arora, Rohit AU - Arora R LA - eng PT - Journal Article PT - Meta-Analysis PT - Review PL - United States TA - Clin Cardiol JT - Clinical cardiology JID - 7903272 RN - 0 (Anticoagulants) RN - 0 (Fibrinolytic Agents) RN - 0 (Heparin, Low-Molecular-Weight) RN - 0 (Platelet Aggregation Inhibitors) SB - IM MH - Anticoagulants/adverse effects/*therapeutic use MH - Drug Therapy, Combination MH - Evidence-Based Medicine MH - Fibrinolytic Agents/adverse effects/*therapeutic use MH - Hemorrhage/chemically induced MH - Heparin, Low-Molecular-Weight/adverse effects/*therapeutic use MH - Hospitalization MH - Humans MH - Length of Stay MH - Myocardial Infarction/*drug therapy/mortality MH - Platelet Aggregation Inhibitors/therapeutic use MH - Randomized Controlled Trials as Topic MH - Recurrence MH - Risk Assessment MH - *Thrombolytic Therapy/adverse effects/mortality MH - Time Factors MH - Treatment Outcome PMC - PMC6653358 EDAT- 2009/07/18 09:00 MHDA- 2010/02/23 06:00 PMCR- 2009/07/16 CRDT- 2009/07/18 09:00 PHST- 2009/07/18 09:00 [entrez] PHST- 2009/07/18 09:00 [pubmed] PHST- 2010/02/23 06:00 [medline] PHST- 2009/07/16 00:00 [pmc-release] AID - CLC20432 [pii] AID - 10.1002/clc.20432 [doi] PST - ppublish SO - Clin Cardiol. 2009 Jul;32(7):358-64. doi: 10.1002/clc.20432.