RESUMEN
The intrauterine device [IUD] is the most widely used reversible method of contraception. Discontinuation of various contraceptive methods can cause unplanned and unwanted pregnancies. The aim of this study was to determine duration use and causes of discontinuation IUD in Sarvabad in 2005-2008. This descriptive study was conducted at medical health center of Sarvabad. The study population were all women who had IUD removal from 2005-2008. Data were collected cases of IUD removal, duration of use and reasons for removal of it were analyzed. Data were analyzed by SPSS 15. At the time of IUD insertion, the mean age of the subjects was 29.14 +/- 8.1 years, number of children was 2.8 +/- 1.33, and mean duration of IUD use was 36.5 +/- 31.14 months. Continuation rates at the end of 1 month, 3 months, 6 months, 9 months, 1 year, 3 years, 5 years and 7 years were 92.7, 87, 79.2, 71.6, 65.3, 20.8 and 11.8 per 100, respectively. The reasons for removal were frequently bleeding, desire for conception and expired date. Bleeding was the common side effect of IUD which caused discontinuation [30.5%], thus lower mean duration were found among this group as comparative to other groups. The present study that high discontinuation rate of IUD and the main reason was bleeding. Therefore, more time for consulting about use of other type of IUD and prevention method is necessary