Abstract:Despite the wide utilization of gonadotropin-releasing hormone analogs, progesterone elevation (P4E) in the late follicular phase occurs in 5 to 30% of all ovarian stimulation (OS) cycles. Although the detrimental effect of P4E on pregnancy rates in fresh in vitro fertilization cycles is valid in all subsets of cases, higher levels of P4 and a longer duration of P4E may be needed in patients with a hyper-ovarian response in order for a negative impact on pregnancy rates to occur. Available preclinical and clin… Show more
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