Abstract
The present use and potential uses of prostaglandins as abortifacients are summarized. Pertinent history, chemistry, prostaglandins' possible role in physiologic and pathologic processes and pharmacologic actions are discussed. The results of natural prostaglandins and their analogues by systemic and intrauterine administration for the purposes of postcoital contraception, menstrual regulation, first- and second-trimester abortion, preoperative dilatation of the cervix, and delivery of patients with death in utero are presented. The only approved method of induction of abortion with prostaglandins, prostaglandin F2α by the intra-amniotic route for the induction of midtrimester abortion, is evaluated and compared to other methods of midtrimester abortion. It was concluded that: (1) the present use of prostaglandins is an important addition to the obstetrician's armamentarium, (2) more effective and/or convenient methods that are useful in patients over a wider gestational age appear to have been defined, and (3) the routine use of prostaglandins for postcoital contraception, menstrual regulation, and first-trimester abortion will require the development of analogues that are more specific as to their abortifacient actions than the natural prostaglandins and/or the development of improved delivery systems.
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