PMID- 9212355 OWN - NLM STAT- MEDLINE DCOM- 19970902 LR - 20180216 IS - 0301-0147 (Print) IS - 0301-0147 (Linking) VI - 27 IP - 2 DP - 1997 Mar-Apr TI - Efficacy and safety of low molecular weight heparin, unfractionated heparin and warfarin for thrombo-embolism prophylaxis in orthopaedic surgery: a meta-analysis of randomised clinical trials. PG - 75-84 AB - The efficacy and safety of low molecular weight heparin (LMWH), unfractionated heparin (UFH) and warfarin for prophylaxis of thrombo-embolism in orthopaedic surgery were compared using meta-analysis techniques. Twenty-two studies were included, 2 of which compared LMWH to warfarin. The mean probabilities to develop deep-vein thrombosis (DVT), pulmonary embolism and major and minor bleeding using UFH were: 0.21 (95% confidence interval, CI: 0.18-0.24); 0.01 (95% CI: 0.01-0.02); 0.05 (95% CI: 0.03-0.07), and 0.19 (95% CI: 0.17-0.22), respectively. The relative risk (RR) of DVT for LMWH vs. UFH was 0.76 (95% CI: 0.60-0.91), p < 0.05 and for LMWH vs. warfarin 0.78 (95% CI: 0.69-0.87), p < 0.05. The RR of minor bleeding for LMWH vs. UFH was 0.76 (95% CI: 0.64-0.92), p < 0.05. The RR of minor bleeding for LMWH vs. warfarin was 3.28 (95% CI: 2.21-4.70), p < 0.05. CONCLUSION: in orthopaedic surgery, LMWH is significantly superior to both UFH and warfarin in the prevention of DVT and results in significantly less minor bleeding complications when compared to UFH, but significantly more minor bleeding when compared to warfarin. FAU - Palmer, A J AU - Palmer AJ AD - Institute for Medical Informatics and Biostatistics, Riehen, Switzerland. FAU - Koppenhagen, K AU - Koppenhagen K FAU - Kirchhof, B AU - Kirchhof B FAU - Weber, U AU - Weber U FAU - Bergemann, R AU - Bergemann R LA - eng PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Haemostasis JT - Haemostasis JID - 0371574 RN - 0 (Anticoagulants) RN - 0 (Heparin, Low-Molecular-Weight) RN - 5Q7ZVV76EI (Warfarin) RN - 9005-49-6 (Heparin) SB - IM MH - Anticoagulants/adverse effects/*therapeutic use MH - Hemorrhage/chemically induced MH - Heparin/adverse effects/*therapeutic use MH - Heparin, Low-Molecular-Weight/adverse effects/*therapeutic use MH - Humans MH - *Orthopedics MH - Postoperative Complications/*prevention & control MH - Randomized Controlled Trials as Topic MH - Thromboembolism/*prevention & control MH - Warfarin/adverse effects/*therapeutic use EDAT- 1997/03/01 00:00 MHDA- 1997/03/01 00:01 CRDT- 1997/03/01 00:00 PHST- 1997/03/01 00:00 [pubmed] PHST- 1997/03/01 00:01 [medline] PHST- 1997/03/01 00:00 [entrez] AID - 10.1159/000217437 [doi] PST - ppublish SO - Haemostasis. 1997 Mar-Apr;27(2):75-84. doi: 10.1159/000217437.