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Low molecular weight heparin for the prevention of hepatic veno-occlusive disease (VOD) after hematopoietic stem cell transplantation: a prospective phase II study.

Abstract
We evaluated 40 patients undergoing high-dose chemo/radiotherapy (HDCT) and hematopoietic stem cell transplantation (HSCT) (allogeneic (22), autologous (18)) to determine the safety and feasibility of administering low molecular weight heparin (LMWH) as hepatic veno-occlusive disease (VOD) prophylaxis. Patients received a once daily subcutaneous injection of dalteparin 2500 anti-Xa i.u. commencing the day prior to starting HDCT, and continuing until day +30 post HSCT or hospital discharge, whichever came first. Dosage adjustments were made for patients developing renal failure. All bleeding episodes were recorded and graded and VOD was diagnosed and graded according to Seattle criteria. At 100 days of follow-up, the overall survival and probability of regimen-related mortality were 85 and 15%, respectively. Nine patients developed VOD. The probability of developing VOD post allogeneic and autologous HSCT was 28% (95% CI, 6-45) and 17% (95% CI, 0-32), respectively. VOD was graded as moderate (n=8) and severe (n=1). VOD resolved in all cases except for one patient who died secondary to severe VOD and multiorgan failure. Clinically significant bleeding episodes occurred in three patients; 24 patients developed minor bleeding not requiring specific therapy. All bleeding episodes resolved. These results suggest that LMWH for VOD prophylaxis is safe with a low incidence of serious bleeding events. Whether it is superior to unfractionated heparin, however, is unknown and should be addressed within the context of a randomized controlled trial.
AuthorsD L Forrest, K Thompson, V G Dorcas, S H Couban, R Pierce
JournalBone marrow transplantation (Bone Marrow Transplant) Vol. 31 Issue 12 Pg. 1143-9 (Jun 2003) ISSN: 0268-3369 [Print] England
PMID12796794 (Publication Type: Clinical Trial, Clinical Trial, Phase II, Journal Article)
Chemical References
  • Dalteparin
Topics
  • Adolescent
  • Adult
  • Dalteparin (administration & dosage, adverse effects)
  • Female
  • Hematopoietic Stem Cell Transplantation (adverse effects)
  • Hemorrhage (chemically induced)
  • Hepatic Veno-Occlusive Disease (etiology, prevention & control)
  • Humans
  • Injections, Subcutaneous
  • Male
  • Middle Aged
  • Prospective Studies
  • Safety
  • Transplantation, Autologous
  • Transplantation, Homologous

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