Interception by post-coital IUD insertion.

After the development of postcoital hormonal interception, the postcoital use of IUDs to prevent pregnancy was proposed by Tatum. The major advantage of this treatment is that it avoids the use of the usual massive dose of estrogens (a very effective postcoital method) which is associated with nausea and vomiting. This is the 1st method to be effective up to 5 days after exposure, 3 days more than the estrogen treatment. It may also provide long-term contraception in women who wish to continue using the IUD. A major disadvantage of postcoital IUD use is that IUD insertion can produce serious complications if a patient has a vaginal or venereal infection or an asymptomatic cervicitis or even pelvic inflammatory disease (PID). After proper physical examination, suitable patients are selected from those requesting postcoital treatment. Cases involving rape are mostly excluded from these services; but, if they present early, proper work up and treatment can be performed within the time span of 5 days available for this method and it will still be possible to fit a postcoital IUD. The potential risk of future infertility should be considered as PID rates in nulliparous IUD users are up to 7 times higher than in nonusers. Young nulliparous, sexually active women--especially of the lower socioeconomic strata--are identified as high-risk patients. Over 70% of women requesting interception are nulliparous. Clients asking for postcoital insertion should be informed of its potential risk, as women under 25 years of age are more prone to infection. The risk of septic abortion exists if an IUD is inserted into a gravid uterus due to pregnancy resulting from unreported previous sexual intercourse. Septic abortion is a life-threatening condition. Out of several series, no pregnancies are reported in the month of treatment. The IUD preferred is the Multiload copper IUD or the copper T; the highest expulsion rate proved the Copper-7 Gravigard (Cu-7) inefficient. In suitable circumstances, the IUD can be the 1st choice in postcoital interception.