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Am J Obstet Gynecol. 1999 Mar;180(3 Pt 1):670-6.

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

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  • 1British Columbia Women's Hospital, University of British Columbia, Vancouver, British Columbia.

Abstract

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.

PMID:
10076146
[PubMed - indexed for MEDLINE]
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