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Extension of the clomiphene citrate stair-step protocol to gonadotropin treatment in women with clomiphene resistant polycystic ovarian syndrome.

Our objective was to evaluate the safety and efficacy of direct initiation of gonadotropin ovarian stimulation without prior withdrawal bleeding in anovulatory clomiphene citrate (CC) resistant polycystic ovarian syndrome (PCOS) patients. Eighteen PCOS patients underwent ovulation induction with CC using a stair-step regimen. Patients who failed to respond to the maximal dose of CC initiated gonadotropin stimulation without inducing withdrawal bleeding, using the chronic low dose regimen. The primary outcome measure was the time to ovulation from the beginning of CC treatment until the day of ovulatory trigger. This was compared with the time to ovulation calculated according to the traditional approach, which includes inducing progesterone withdrawal bleeding between each CC dose increment and before gonadotropin therapy. The time to ovulation in the study group was 67.0 ± 6.8 days. The estimated time to ovulation according to the traditional approach was approximately 110 days. The clinical pregnancy rate was 44% (8/18), and all pregnancies were singletons. One patient miscarried; hence the live birth rate was 38.9% (7/18). Direct initiation of gonadotropin therapy without prior induction of withdrawal bleeding in clomiphene resistant PCOS patients results in considerable reduction of the time to ovulation and is both safe and efficacious.

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