Factors affecting the outcome of laparoscopic ovarian drilling for polycystic ovarian syndrome in women with anovulatory infertility

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Abstract
Objective To describe and analyse the factors affecting the pregnancy rate of laparoscopic ovarian drilling for polycystic ovarian syndrome in women with anovulatory infertility.Design A retrospective study.Setting A specialist infertility clinic based at a teaching hospital in England.Population One hundred and eighteen women, for whom hospital records and follow up data were available, with polycystic ovarian syndrome who underwent laparoscopic ovarian surgery for anovulatory infertility over a five year period, between January 1991 and December 1995.Main Outcome measures Ovulation and pregnancy rate.Results The cumulative conception rate 12 months after the treatment was 54%. Women who conceived following the surgery had a shorter duration of infertility, were treated with diathermy (rather than laser), had higher pre‐operative luteinising hormone levels, were younger and were more likely to have ultrasonographic evidence of polycystic ovarian disease. Logistic multiple regression analysis showed that the duration of infertility, modality used in treatment (laser or diathermy) and the preoperative levels were the main determinants of the outcome.Conclusion Women with polycystic ovarian syndrome respond favourably to laparoscopic ovarian drilling. The success rate in women with infertility duration of less than three years, treated with diathermy, in whom the pre‐operative level was more than 10 IU/L reached 79%.