Objective: To review the published literature, outline the pathogenesis of failed sterilization and discuss the currently available contraceptive options once sterilization fails.
Study design: Publications from January 1966 to October 2008 and indexed in the MEDLINE/PubMed database were reviewed. Medical search heading words sterilization, sterilization failure, sterilization methods and contraception were used to identify relevant articles. In addition, references were obtained through cross-referencing the bibliography cited in each work.
Results: Available evidence suggests that sterilization fails in 0.13-1.3% of sterilization procedures and of these, 15-33% will be ectopic pregnancies. Tubal recanalization and cornual and tuboperitoneal fistula formation are the main causes; their occurrence can be reduced by proper training and use of appropriate sterilization techniques. Following sterilization failure, hysterosalpingography can provide valuable information about the patency of the fallopian tubes.
Conclusion: Tubal sterilization is highly effective but can fail. There is a paucity of information in the literature as to what is best or most appropriate for patients when sterilization fails. Patients should be counseled at the outset about the contraceptive options that are available should sterilization fail.