137 cases of unfavourable outcome in IUD insertion (i.e. early removal or expulsion because of complications) were investigated as regards age, parity, previous intrauterine contraception, previous induced abortion, type of device inserted, and type of complications observed. Moreover, this group was compared for each feature mentioned with a control group of 454 women who successfully concluded the prescribed period from the insertion. All the devices were inserted with a significantly higher rate of favourable outcome in pluriparous versus nulliparous patients; age probably didn't affect the outcome, but strongly conditioned the prevalence of particular complications such as PID and abnormal bleeding. Progesterone-loaded IUD didn't show a more favourable outcome than copper devices.
PIP: The factors associated with 137 cases of IUD expulsion or early removal due to complications were investigated in a case-control study conducted at an Italian family planning clinic. The 454 controls were women who did not experience adverse IUD outcomes. Complications in the study group included: bleeding (35%), expulsion (13%), pregnancy (13%), pelvic pain (15%), and pelvic inflammatory disease (24%). The majority of complications occurred 6-12 months after IUD insertion. Previous IUD use and the type of IUD inserted were unrelated to outcome. Most significant in terms of outcome was parity. There was a statistically significant (p .001) difference between the percentage of nulliparae in the study group (34%) compared with the control group (17%). Although most of the nulliparae in the study group were under 20 years of age, age did not have a significant correlation with IUD outcome. Pelvic inflammatory disease was significantly more prevalent in women under 30 years of age, while excessive bleeding was more common in cases above this age.