Although it is well established that cervical priming before surgicall
y induced abortion reduces the incidence of complications, its use is
infrequent and confined to groups perceived to be at high risk. We com
pared the effect of prostaglandin E1 analogues, gemeprost and misopros
tol, on the cervix. Both induced clinical and histochemical changes th
at were significantly different from controls and were likely to have
therapeutic value. Misoprostol, however, is cheap, easily stored, and
associated with few side-effects. Cervical pre-dilation with misoprost
ol may be considered in all women having surgically induced abortions.