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[Pregnancy and the intrauterine device].


 The possibility of pregnancy with the use of IUDs is surveyed. The occurrence of pregnancy during the use of an IUD is examined 1st. The efficiency of IUDs is not 100%. The ratio of pregnancy varieswith the type of the device, the population under consideration (age, parity, race), the technique of insertion, and the degree of surveillance. Pregnancy can be both normal and abnormal, including observations of abdominal and ectopic pregnancies. Caution should be given to the possibiity of spontaneous abortion in the presence of an IUD. Patterns of behavior and therapeutic techniques for these possibilities are discussed. In insertion of an IUD after pregnancy, caution must be given in regard to the tendency toward spontaneous expulsion of the device. There appears to be an increased danger of uterine perforation during the postpartum period. The risk is acknowledged of pregnancy after the insertion of an IUD, but considering the efficiency and reversibility of this method, it is judged to be an effective method of contraception.
