PMID- 10823256 OWN - NLM STAT- MEDLINE DCOM- 20000905 LR - 20171116 IS - 0340-6245 (Print) IS - 0340-6245 (Linking) VI - 83 IP - 5 DP - 2000 May TI - Fixed-dose, body weight-independent subcutaneous LMW heparin versus adjusted dose unfractionated intravenous heparin in the initial treatment of proximal venous thrombosis. EASTERN Investigators. PG - 652-6 AB - BACKGROUND: Body weight-adjusted subcutaneous low-molecular-weight heparin (LMWH) has been proven to be at least as effective and safe as dose-adjusted intravenous unfractionated heparin (UFH) for the treatment of patients with venous thromboembolism. However, body weight-adjusted dosage of low-molecular-weight heparin may be cumbersome and could lead possibly to incorrect dosing. Therefore a fixed LMWH dose, independent of body-weight, might rationalize initial treatment for venous thromboembolism. METHODS: Patients with proven proximal deep-vein thrombosis were randomly assigned to fixed dose subcutaneous LMWH Certoparin (8,000 anti-factor Xa U b.i.d.; 265 patients) or to adjusted dose i.v. UFH (273 patients) for 12 days. Vitamin K antagonists were started between day 3 and 7 and continued for up to 6 months. The primary outcome measure was a 30 percent or greater improvement in the Marder Score, as revealed by repeated venography on day 12 (end of the initial treatment). The secondary composite outcome measure included death, recurrent venous thromboembolism and major bleeding and was assessed at day 12 and after 6 months by a blinded adjunction committee. RESULTS: The Marder score improved by 30% or more in 30.3% and 25.0% of patients assigned to LMWH (198 paired venograms) and UFH (192 paired venograms), respectively (2p = 0.26). At the end of the initial treatment, the composite outcome was observed in 4 of the 265 patients (1.5%) randomized to LMWH, as compared with 14 of the 273 patients (5.1%) randomized to UFH (2p = 0.03). At 6 months these figures were 6.8% and 12.8%, respectively (risk reduction 0.53, confidence interval 0.31-0.90, 2p = 0.02). CONCLUSION: Fixed dose subcutaneous LMWH certoparin is at least as efficacious as UFH in resolving proximal vein thrombosis. FAU - Harenberg, J AU - Harenberg J AD - Dept. of Medicine, University Hospital, Mannheim, Germany. J-Harenberg@t-online.de FAU - Schmidt, J A AU - Schmidt JA FAU - Koppenhagen, K AU - Koppenhagen K FAU - Tolle, A AU - Tolle A FAU - Huisman, M V AU - Huisman MV FAU - Buller, H R AU - Buller HR LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PL - Germany TA - Thromb Haemost JT - Thrombosis and haemostasis JID - 7608063 RN - 0 (Anticoagulants) RN - 0 (Heparin, Low-Molecular-Weight) RN - 12001-79-5 (Vitamin K) RN - 9005-49-6 (Heparin) RN - V72OT3K19I (certoparin) SB - IM MH - Acute Disease MH - Adult MH - Aged MH - Anticoagulants/*administration & dosage/adverse effects/therapeutic use MH - Body Weight MH - Cohort Studies MH - Female MH - Hemorrhage/chemically induced MH - Heparin/*administration & dosage/adverse effects/therapeutic use MH - Heparin, Low-Molecular-Weight/*administration & dosage/adverse effects/therapeutic use MH - Humans MH - Injections, Intravenous MH - Injections, Subcutaneous MH - Male MH - Middle Aged MH - Phlebography MH - Popliteal Vein MH - Postoperative Complications/diagnostic imaging/drug therapy/mortality MH - Recurrence MH - Treatment Outcome MH - Venous Thrombosis/diagnostic imaging/*drug therapy/mortality MH - Vitamin K/antagonists & inhibitors EDAT- 2000/05/24 09:00 MHDA- 2000/09/09 11:01 CRDT- 2000/05/24 09:00 PHST- 2000/05/24 09:00 [pubmed] PHST- 2000/09/09 11:01 [medline] PHST- 2000/05/24 09:00 [entrez] AID - 00050652 [pii] PST - ppublish SO - Thromb Haemost. 2000 May;83(5):652-6.