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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Double-blind comparison of carbetocin versus oxytocin in prevention of uterine atony after cesarean section.

OBJECTIVE: The goal of this study was to compare carbetocin, a long-acting oxytocin analog, with oxytocin in the prevention of uterine atony after cesarean section.Study Design: We enrolled 694 patients undergoing elective cesarean section in a Canadian multicenter, double-blind, randomized clinical trial. We compared the effect of a single 100 microg dose of carbetocin with that of a standard 8-hour infusion of oxytocin. The primary outcome was the proportion of patients requiring additional oxytocic intervention for uterine atony. A variable sample size, sequential design was used. RESULTS: The overall oxytocic intervention rate was 7.4%. The odds of treatment failure requiring oxytocic intervention was 2.03 (95% confidence interval 1.1 to 2.8) times higher in the oxytocin group compared with the carbetocin group, respectively, 32 of 318 (10.1%) versus 15 of 317 (4.7%), P <.05. CONCLUSIONS: Carbetocin, a new drug for the prevention of uterine atony, appears to be more effective than a continuous infusion of oxytocin and has a similar safety profile.[1]


  1. Double-blind comparison of carbetocin versus oxytocin in prevention of uterine atony after cesarean section. Dansereau, J., Joshi, A.K., Helewa, M.E., Doran, T.A., Lange, I.R., Luther, E.R., Farine, D., Schulz, M.L., Horbay, G.L., Griffin, P., Wassenaar, W. Am. J. Obstet. Gynecol. (1999) [Pubmed]
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