Friederich PW, Henny CP, Messelink EJ, Geerdink MG, Keller T, Kurth KH, Buller HR, Levi M, Effect of recombinant activated factor VII on perioperative blood loss in patients undergoing retropubic prostatectomy: a double-blind placebo-controlled randomised trial. Lancet 2003:18;361(9353):201-5
Because recombinant activated factor VII (factor VIIa) has prohemostatic effects in bleeding patients with coagulation abnormalities, the authors tested the hypothesis that recombinant factor VIIa could reduce perioperative blood loss in patients with normal coagulation systems. Therefore, they assessed safety and efficacy of this drug in patients undergoing retropubic prostatectomy, which is often associated with major blood loss and need for transfusion. In a double-blind, randomized placebo-controlled trial, the authors recorded blood loss and transfusion requirements in 36 patients undergoing retropubic prostatectomy, who were randomized to receive an intravenous bolus of recombinant factor VIIa (20 microg/kg or 40 microg/kg) or placebo in the early operative phase. Median perioperative blood loss was 1235 mL (IQR 1025-1407) and 1089 mL (928-1320) in groups given recombinant factor VIIa 20 microg/kg and 40 microg/kg, respectively, compared with 2688 mL (1707-3565) in the placebo group (p=0.001). Seven of twelve placebo-treated patients were transfused, whereas no patients who received 40 microg/kg recombinant factor VIIa needed transfusion. The odds ratio for receiving any blood product in patients treated with recombinant factor VIIa compared with control patients was 0 (95% CI 0.00-0.33) No adverse events arose. The authors suggest that an injection of recombinant factor VIIa can reduce perioperative blood loss and eliminate the need for transfusion in patients undergoing major surgery.
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