PMID: 9659650Jul 11, 1998Paper

Double-blind, randomized comparison of the effect of carbetocin and oxytocin on intraoperative blood loss and uterine tone of patients undergoing cesarean section

Journal of Perinatology : Official Journal of the California Perinatal Association
Marc BoucherW Wassenaar

Abstract

A double-blind randomized study involving pregnant women undergoing cesarean section was conducted to compare the effectiveness of a single 100 micrograms intravenous injection of the long-acting oxytocin analog, carbetocin, with that of a standard infusion of oxytocin with respect to intraoperative blood loss. The two treatments also were compared for safety and ability to maintain adequate uterine tone. The study drug was administered to 57 women during elective cesarean section after placental delivery; blood was collected until abdominal closure. Intraoperative blood loss was calculated with a sensitive colorimetric method. Position, tone of the fundus, and vital signs were assessed up to 24 hours after the operation. The need for additional uterotonic agents was recorded. A single 100 micrograms intravenous injection of carbetocin was as effective as a continuous 16 hour infusion of oxytocin in controlling intraoperative blood loss after placental delivery. Mean blood loss after carbetocin administration was 29 ml less than after oxytocin administration (p = 0.3). Subset analysis deleting two patients who received oxytocic intervention in the operating room and one extreme outlier revealed a mean blood loss of 41 ml less i...Continue Reading

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