PMID- 9212354 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 - Low molecular weight heparin and unfractionated heparin for prevention of thrombo-embolism in general surgery: a meta-analysis of randomised clinical trials. PG - 65-74 AB - Low molecular weight heparin (LMWH), unfractionated heparin (UFH) and warfarin were compared with respect to efficacy and safety in the prevention of thrombo-embolism in general surgery. Meta-analysis (MA) with a priori definition of the MA protocol was used to combine the results from randomised trials with patients who underwent general surgery and deep-vein thrombosis (DVT) prophylaxis with LMWH, UFH or warfarin. Forty-four studies were identified for assessment and 33 were included, however, none for warfarin. For efficacy (DVT and pulmonary embolism) and major bleeding, no significant difference between the LMWH- and UFH-treated groups was demonstrated. The relative risk of minor bleedings for LMWH versus UFH was 0.75 (0.64-0.88; 95% confidence interval) and is significant (p < 0.05). Within the limitations of the MA, LMWH and UFH did not differ significantly in terms of prevention of thrombo-embolism, but LMWH had a significantly better safety profile. On this basis, LMWH may be preferable to UFH in the prevention of thrombo-embolism in general surgery. FAU - Palmer, A J AU - Palmer AJ AD - Institute for Medical Informatics and Biostatistics, Riehen, Switzerland. FAU - Schramm, W AU - Schramm W FAU - Kirchhof, B AU - Kirchhof B FAU - Bergemann, R AU - Bergemann R LA - eng PT - Comparative Study 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 - 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 - Postoperative Complications/*prevention & control MH - Randomized Controlled Trials as Topic MH - Thromboembolism/*prevention & control MH - Thrombophlebitis/*prevention & control 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 - 10.1159/000217436 [doi] PST - ppublish SO - Haemostasis. 1997 Mar-Apr;27(2):65-74. doi: 10.1159/000217436.