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Clinical Trial
Comparative Study
Controlled Clinical Trial
Journal Article
Follicular phase gonadotropin-releasing hormone agonist and human gonadotropins: a better alternative for ovulation induction in in vitro fertilization.
Fertility and Sterility 1990 Februrary
Leuprolide acetate was used in 189 in vitro fertilization (IVF) cycles. Patients were allocated prospectively into two groups: In group A (96 cycles), leuprolide acetate was started on the 2nd menstrual cycle day of the actual IVF attempt. In group B (93 cycles), leuprolide acetate was started on the 3rd luteal phase day of the preceding IVF cycle. Ovulation was induced with a combination of pure follicle-stimulating hormone (FSH) and human menopausal gonadotropins (hMG), starting on or before the 5th cycle day, respectively. Leuprolide acetate and gonadotropins were continued until the day of human chorionic gonadotropin (hCG) administration. Follicular aspiration was carried out either by laparoscopy or by transvaginal ultrasound guidance. Group A required a lower number of FSH and hMG ampules than group B; nevertheless, there was no difference in the number of follicles, percentage of preovulatory oocytes or fertilization rate between the groups. The number of embryos transferred was 3.3 and 3.4, respectively. A significantly higher pregnancy rate was observed in group A (40.6% versus 27.7%) and a lower miscarriage rate (22.8% versus 36%) than in group B. In short, this study suggests that there is no need to administer leuprolide acetate routinely during the luteal phase of the preceding IVF cycle.
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