Induced Abortion and the Risk of Tubal Infertility

ObjectiveTo explore the association between induced abortion and tubal infertility in Chengdu, China.MethodsA 1:2 case-control study was designed. Infertile women with bilateral tubal occlusion in the case group compared with two control groups: infertile control group with bilateral tubal patency and pregnant control group with currently pregnancy. Data were collected using questionnaires through face-to-face interviews, covering the subjects' demographic details and histories of gynecology and obstetrics. Adjusted odds ratio was calculated as a measure of the association using stepwise multiple logistic regression analysis.ResultsInduced abortion was not found to be associated with tubal infertility in the analysis including either the infertile controls or the pregnant controls, but other risk factors were found, such as history of acute pelvic inflammatory disease (PID), lower abdominal surgeries, dysmenorrhea and pregnancy.ConclusionIt is contended that facing an increasing trend of infertile cases with tubal occlusion in China, it is emphasized that special attention should paid to the long term impact of reproductive tract infection, especially, asymptomatic ones, rather than induced abortion.