• T F Baskett, V L Persad, H J Clough, and D C Young.
• Department of Obstetrics and Gynaecology, Dalhousie University, Halifax, Nova Scotia, Canada. tbaskett@ns.sympatico.ca <tbaskett@ns.sympatico.ca>
• Int J Gynaecol Obstet. 2007 Apr 1;97(1):2-5.

ObjectiveTo compare the effect of 400 mug of oral misoprostol with 5 U of intravenous oxytocin in the reduction of postpartum blood loss and prevention of postpartum hemorrhage.MethodsIn a prospective, double-blind, randomized controlled trial conducted in a tertiary maternity hospital 622 women received either 400 mug of oral misoprostol or 5 U of intravenous oxytocin after delivery of the anterior shoulder or within 1 min of delivery. The primary outcome was a hematocrit drop of 10% or greater 24 h postpartum. The secondary outcomes were a hemoglobin drop of 30 mg/L or greater, the use of additional oxytocin, an estimated blood loss greater than 1000 mL, manual removal of the placenta, a blood transfusion, and shivering and fever (>or=38 degrees C) as adverse effects of misoprostol.ResultsThere was no difference between the 2 groups regarding the primary outcome (a >or=10% hematocrit drop occurred in 3.4% and 3.7% of the participants in the oxytocin and misoprostol groups, P=0.98). The rate of use of additional oxytocin was higher in the misoprostol group (51% versus 40.5%, P=0.01). Shivering was confined to the misoprostol group (6.8%), and fever occurred in 12.5% of the women in the misoprostol group and 0.3% of the women in the oxytocin group.ConclusionThe routine use of 400 microg of oral misoprostol was no less effective than 5 U of intravenous oxytocin in reducing blood loss after delivery, as assessed by change in postpartum hematocrit. The adverse effects of misoprostol were mild and self-limiting.

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