Intra-amniotic urea and prostaglandin F2 alpha for midtrimester abortion: a modified regimen.

A study comparing intra-amniotic urea plus intravenous oxytocin and intra-amniotic urea with 10 mg. prostaglandin F2 alpha was completed. In addition, the results obtained with a further 150 patients receiving urea and prostaglandin are reported. Mean injection-abortion intervals ranged from 15.75 hours for urea-prostaglandin to 18.93 hours for urea-oxytocin. The advantages of urea-prostaglandin and suggested improvements are discussed. Over all, the method appears efficacious though incomplete abortions and cervical laceration are persistent problems.