Journal
JOURNAL OF ASSISTED REPRODUCTION AND GENETICS
Volume 29, Issue 12, Pages 1343-1351Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10815-012-9863-2
Keywords
Mild ovarian stimulation; IVF; GnRH antagonist; FSH
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To compare the effectiveness of two stimulation protocols in non-polycystic ovary (PCO) high responders undergoing in vitro fertilization (IVF). Prospective randomized trial. A Reproductive Medicine and IVF Unit of a University Hospital and a private IVF Clinic. Four hundred-and-twelve normoovulatory women with good ovarian responsiveness were randomized to receive either the mild (FSH 150 IU/day from day 4 of a spontaneous cycle followed by GnRH-antagonist from day 8; n = 205) or the long (FSH 150 IU/day; n = 207) stimulation protocol. The outcome of these two regimens was compared including fresh and thawing cycles. The total FSH dose and the peak estradiol level were significantly lower in the mild protocol, whereas the retrieved oocytes, fertilization rate, number and quality of embryos, pregnancy and implantation rates, cumulative fresh plus thaw success rate, and incidence of severe ovarian hyperstimulation syndrome were comparable with the two regimens. In young, normoovulatory patients with good ovarian responsiveness undergoing IVF the mild stimulation protocol has effectiveness and risks comparable to the long protocol with low FSH starting dose, even when thawing cycles are included in the comparison.
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