Abstract
Objective: To investigate the impact of functional ovarian cysts on the time required to achieve pituitary suppression, follicular development, embryo quality, and pregnancy rates during IVF treatment. Design: Prospective observational study. Intervention(s): Daily treatment with buserelin (sc 500 μg) was initiated on day 2 of menstruation. Ultrasound and hormonal tests were performed on days 1, 7, 11, 14, and weekly thereafter until pituitary suppression was achieved. Result(s): 48 patients underwent 51 cycles of IVF treatment. A functional cyst was detected in three cycles (5.8%) with baseline ultrasound scan and in 27 cycles (52.9%) on day 7 of buserelin administration. Patients who developed a cyst required a significantly longer time to achieve pituitary suppression (21 vs. 7 days), had a significantly lower FSH level at the time of initiation of gonadotropins, required more ampules of gonadotropin (45 vs. 41 ampules), developed less follicles (13 vs. 17.5), and had lower embryo quality. However, there were no differences in the implantation (23.5% vs. 17.2%) and pregnancy rates (37.2% vs. 29.2%) between two groups. Conclusion(s): Functional cysts prolong the period to achieving pituitary suppression, increase gonadotropin requirements, and decrease follicular recruitment and embryo quality. They have, however, no negative effect on pregnancy rates.
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