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  • Title: Anticoagulation with prostaglandins and unfractionated heparin during continuous venovenous haemofiltration: a randomized controlled trial.
    Author: Kozek-Langenecker SA, Spiss CK, Gamsjäger T, Domenig C, Zimpfer M.
    Journal: Wien Klin Wochenschr; 2002 Feb 15; 114(3):96-101. PubMed ID: 12060975.
    Abstract:
    BACKGROUND: The objective of this prospective, randomized, controlled clinical study was to compare efficacy, safety, and costs of fixed-dose prostaglandins with adjusted-dose unfractionated heparin as anticoagulants for continuous venovenous haemofiltration. PATIENTS AND METHODS: Perioperative critically ill patients requiring continuous haemofiltration for acute renal failure received unfractionated heparin anticoagulation titrated to achieve an activated clotting time in the extracorporeal system of > 120 s. Patients were randomly assigned to receive a test infusion containing either prostaglandin I2 (5 ng/kg/min; group I; n = 15; 75 filters), prostaglandin E1 (5 ng/kg/min; group E; n = 18; 72 filters), or placebo (group H; n = 17; 63 filters). Heparin and test solutions were infused into the extracorporeal circuit before the haemofilter. All AN69-surface hollow fiber filters were primed with normal saline containing 5.000 IU heparin. RESULTS: The primary outcome measure--adequate haemofilter life span > 24 h--was compared by using Cochran's Q test. There was a significant difference in the frequencies of adequate haemofilter life span between the groups (36% group H, 65% group I, 59% group E; P < 0.05 versus group H). There were 6 bleeding episodes in group H, 2 in group E, and only 1 trivial bleeding episode in group I (P < 0.05 versus group H). Daily costs of haemofiltration were 61% higher in group I and 23% higher in group E than in group H (P < 0.05 versus group H). A heparin-sparing effect of prostaglandins was observed. CONCLUSIONS: Fixed-dose prostaglandins I2 and E1 reduced the incidence of haemofilter failure and bleeding when compared with adjusted-dose unfractionated heparin. There was no significant difference between the two prostaglandin groups. The increase in daily costs for haemofiltration treatment under prostaglandins is not clinically relevant.
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