PMID- 18574082 OWN - NLM STAT- MEDLINE DCOM- 20080708 LR - 20220419 IS - 1538-3679 (Electronic) IS - 0003-9926 (Linking) VI - 168 IP - 12 DP - 2008 Jun 23 TI - Low-molecular-weight heparin vs unfractionated heparin for perioperative thromboprophylaxis in patients with cancer: a systematic review and meta-analysis. PG - 1261-9 LID - 10.1001/archinte.168.12.1261 [doi] AB - BACKGROUND: The relative benefits and harms of low-molecular-weight heparin (LMWH) and unfractionated heparin (UFH) are required for judgments regarding the appropriate perioperative thromboprophylaxis in patients with cancer. We systematically reviewed the literature to quantify these effects. METHODS: The comprehensive searches included (1) an electronic search of MEDLINE, EMBASE, ISI the Web of Science, and CENTRAL (The Cochrane Central Register of Controlled Trials); (2) a hand search of relevant conference proceedings; (3) a reference check of included trials; and (4) use of the PubMed "Related Articles" feature. Outcomes of interest included mortality, deep venous thrombosis, pulmonary embolism, bleeding complications, and thrombocytopenia. RESULTS: Of 3986 identified citations, we included 14 randomized clinical trials in the meta-analysis (all using preoperative prophylactic anticoagulation). The overall methodological quality was moderate. The meta-analysis showed no differences in mortality in patients receiving LMWH compared with UFH (relative risk [RR], 0.89; 95% confidence interval [CI], 0.61-1.28) or in clinically suspected deep venous thrombosis (RR, 0.73; 95% CI, 0.23-2.28). In a post hoc analysis including all studies assessing deep venous thrombosis, irrespective of the diagnostic strategy used, LMWH was superior to UFH (RR, 0.72; 95% CI, 0.55-0.94). There were no differences in rates of pulmonary embolism (RR, 0.60; 95% CI, 0.22-1.64), minor bleeding (RR, 0.88; 95% CI, 0.47-1.66), or major bleeding (RR, 0.95; 95% CI, 0.51-1.77). CONCLUSIONS: We found no differences in mortality in patients with cancer receiving perioperative thromboprophylaxis with LMWH vs UFH. Further trials are needed to more carefully evaluate the benefits and harms of different heparin thromboprophylaxis strategies in this population. FAU - Akl, Elie A AU - Akl EA AD - Department of Medicine, State University of New York at Buffalo, Erie County Medical Center CC-142, 462 Grider St, Buffalo, NY 14215, USA. elieakl@buffalo.edu FAU - Terrenato, Irene AU - Terrenato I FAU - Barba, Maddalena AU - Barba M FAU - Sperati, Francesca AU - Sperati F FAU - Sempos, Elena V AU - Sempos EV FAU - Muti, Paola AU - Muti P FAU - Cook, Deborah J AU - Cook DJ FAU - Schunemann, Holger J AU - Schunemann HJ LA - eng PT - Comparative Study PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PT - Review PT - Systematic Review PL - United States TA - Arch Intern Med JT - Archives of internal medicine JID - 0372440 RN - 0 (Anticoagulants) RN - 0 (Heparin, Low-Molecular-Weight) RN - 9005-49-6 (Heparin) SB - IM CIN - ACP J Club. 2008 Dec 16;149(6):11. PMID: 19071877 MH - Anticoagulants/*therapeutic use MH - Heparin MH - Heparin, Low-Molecular-Weight MH - Humans MH - Neoplasms/*complications MH - Perioperative Care MH - Thrombosis/etiology/*prevention & control RF - 47 EDAT- 2008/06/25 09:00 MHDA- 2008/07/09 09:00 CRDT- 2008/06/25 09:00 PHST- 2008/06/25 09:00 [pubmed] PHST- 2008/07/09 09:00 [medline] PHST- 2008/06/25 09:00 [entrez] AID - 168/12/1261 [pii] AID - 10.1001/archinte.168.12.1261 [doi] PST - ppublish SO - Arch Intern Med. 2008 Jun 23;168(12):1261-9. doi: 10.1001/archinte.168.12.1261.