I-28: The Effect of Coasting Duration on Oocytes Retrieved in ART Cycle

Background: Coasting is one of the most common strategies which has been proposed for preventing ovarian hyperstimulation (OHSS) in overstimulated cycles. However, the debate on the effect of coasting duration (days) on ART cycles outcome is ongoing. This study aimed to assess the influence of coasting duration in oocytes number and quality and fertilization rate in patients with male factor infertility (normal female) and PCOS. Materials and Methods: In this prospective crosssectional study of IVF/ICSI cycles, using long protocol, seventy -seven patients undergoing coasting (fifty-three women with male factor infertility and twenty-four PCOS patients) were evaluated at Royan Institute between July 2011 and December 2012. Coasting started when the estradiol level was more than 3000 pg/ml in the presence of at least 15 follicles with size of 14 mm. The results were analyzed according to the coasting periods of 1 to 4 days. The Statistical comparisons were performed using one- way ANOVA, Kruskal-wallis, Chi-square and Fisher