کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6188723 | 1256691 | 2015 | 4 صفحه PDF | دانلود رایگان |
A 30-year-old woman with premature ovarian insufficiency had two follicles measuring 17âmm and 14âmm on day 3 of her menstrual cycle. Serum oestradiol concentration was 210âpg/ml. Recombinant human chorionic gonadotrophin was given and 5âmg/day letrozole started orally. One metaphase II oocyte was collected 36âh later. A 4-cell embryo was vitrified on the second day after fertilization. Letrozole was stopped on cycle day 8 due to absence of any other visible antral follicles. Oestradiol valerate 6âmg/day was started and the endometrium was 9.2âmm on cycle day 11. The embryo was warmed and transferred on cycle day 13, the 8th day after oocyte retrieval. Luteal phase support with progesterone, oestradiol and low molecular weight heparin was started on the day of transfer and continued until the 10th gestational week. A healthy girl weighing 3200âg was born at term. Early follicular phase oocyte collection did not result in early opening of the implantation window. Apparently secretory transformation was not started until luteal phase support, enabling a cleavage stage embryo transferred 8 days later to implant. Either corpus luteum formation could be disrupted or the endometrium could remain unresponsive to progesterone during the early follicular phase.
Journal: Reproductive BioMedicine Online - Volume 31, Issue 6, December 2015, Pages 819-822