PMID- 11668421 OWN - NLM STAT- MEDLINE DCOM- 20020305 LR - 20171116 IS - 0094-6176 (Print) IS - 0094-6176 (Linking) VI - 27 IP - 5 DP - 2001 Oct TI - Reduction in thrombus extension and clinical end points in patients after initial treatment for deep vein thrombosis with the fixed-dose body weight-independent low molecular weight heparin certoparin. PG - 513-8 AB - Low molecular weight heparin (LMWH) is effective in the treatment of acute deep vein thrombosis (DVT) in adults. This has not been demonstrated for one LMWH alone. The relationship between venographic changes due to LMWH therapy and clinical outcome in the initial treatment period has not been reported. A pooled analysis of two clinical trials was performed. The trials compared a fixed-dose, body weight-independent, subcutaneous LMWH, certoparin (8000 antifactor Xa [aXa] U twice a day [b.i.d.]), with an adjusted-dose intravenous unfractionated heparin (UFH) with respect to venographic changes expressed as Marder score and occurrence of recurrent venous thromboembolism, major bleeding, and mortality. The Marder score was 23.2 +/- 8.4 in patients randomized to LMWH (n = 299 paired phlebograms) and 23.9 +/- 8.9 in patients allocated to UFH (n = 297 paired phlebograms) at entry (2p = 0.23) and 18.9 +/- 9.7 and 20.5 +/- 9.9 at the end of the initial therapy (2p = 0.04), respectively. The composite outcome of recurrent venous thromboembolism, major bleeding, and mortality occurred less frequently during treatment with LMWH (n = 393) than it did with UFH (n = 404, 1.3% versus 5.0%, risk reduction [RR] 0.26, 95% confidence interval [CI] 0.11 to 0.63, 2p = 0.004). Single events of recurrent thromboembolism (2p = 0.12), major bleeding (2p = 0.03), and mortality (2p = 0.12) were observed less frequently with LMWH. A trend toward a lack of regression of thrombus size was observed in recurrent venous thromboembolism (2p = 0.08). Body weight-independent LMWH significantly reduces thrombus size and the incidence of composite outcome during the initial treatment of acute proximal venous thrombosis compared with adjusted dose intravenous UFH. The data indicate a relation between an unimproved Marder score and a recurrent venous thromboembolism. FAU - Harenberg, J AU - Harenberg J AD - j-harenberg@t-online.deDepartment of Medicine, University Hospital Mannheim, Ruprecht-Karls University Heidelberg, Mannheim, German. FAU - Huisman, M V AU - Huisman MV FAU - Tolle, A R AU - Tolle AR FAU - Breddin, H K AU - Breddin HK FAU - Kirchmaier, C M AU - Kirchmaier CM LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PL - United States TA - Semin Thromb Hemost JT - Seminars in thrombosis and hemostasis JID - 0431155 RN - 0 (Heparin, Low-Molecular-Weight) RN - V72OT3K19I (certoparin) SB - IM MH - Aged MH - Dose-Response Relationship, Drug MH - Female MH - Hemorrhage/chemically induced MH - Heparin, Low-Molecular-Weight/*administration & dosage/adverse effects MH - Humans MH - Male MH - Middle Aged MH - Phlebography MH - Recurrence MH - Survival Rate MH - Treatment Outcome MH - Venous Thrombosis/complications/*drug therapy/mortality EDAT- 2001/10/23 10:00 MHDA- 2002/03/07 10:01 CRDT- 2001/10/23 10:00 PHST- 2001/10/23 10:00 [pubmed] PHST- 2002/03/07 10:01 [medline] PHST- 2001/10/23 10:00 [entrez] AID - 10.1055/s-2001-17953 [doi] PST - ppublish SO - Semin Thromb Hemost. 2001 Oct;27(5):513-8. doi: 10.1055/s-2001-17953.