RESUMO
The aim of this study was to compare the frequency of asymptomatic bacteriuria in women who use intrauterine devices [lUDs] as contraceptive method with subjects who use tubal ligation [TL]. A cohort study was conducted on women who were candidates for IUD insertion or TL [control]. The patients were followed for three months, and urine cultures were assessed for bacteriuria at the end of study. Overall, 131 women [mean age, 31.9 +/- 4.25 years] in the IUD group and 78 [mean age, 32.1 +/- 4.0 years] in the control group were studied. The parity score was 2 or more in 72% of the women in the IUD group and in 74% of the controls. The average intercourse frequency was twice per week in 82% of IUD users and 80% of controls. Fifty-seven percent of the women in IUD group and 55%ofthe women in the control group had graduated from secondary school [high school]. Asymptomatic bacteriuria was detected in 13 IUD users [9.9%] and in 1 woman [1.3%] in the control group [risk ratio = 7.74, confidence interval: 1.03 to 58.03; P =.019]. The detected microorganism in the urine culture was Escherichia coli in 12 IUD users and in 1 patient in control group. Klebsiella was found in 1 IUD user. Use of an IUD is a risk factor for urinary tract infection and should be considered, especially in women with recurrent urinary tract infections