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Year : 2016  |  Volume : 3  |  Issue : 1  |  Page : 13-18

Effectiveness of gonadotropin-releasing hormone antagonists in the management of multifollicular recruitment in intrauterine insemination cycles

1 Instituto FIVIR, Institute of Assisted Reproduction, Carcaixent; Department of Gynecology and Obstetrics, Hospital Universitario de La Ribera, Alzira, Valencia, Spain
2 Department of Gynecology and Obstetrics, Hospital Universitario de La Ribera, Alzira, Valencia, Spain

Correspondence Address:
Marita Espejo-Catena
MD Instituto FIVIR, Institute of Assisted Reproduction, Carcaixent. Valencia
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Source of Support: None, Conflict of Interest: None

DOI: 10.5530/ami.2016.1.6

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Introduction: To evaluate the efficacy of GnRH antagonists in terms of increasing the pregnancy rates in intrauterine insemination (IUI) after controlled ovarian stimulation (COS) when more than one dominant follicle is recruited. Methods: This is a prospective and randomized clinical trial that included 300 couples with primary or secondary infertility that underwent their first or second COS-IUI cycle with recombinant FSH. In all of these patients two or three leading follicles > 14 mm of mean diameter where detected by vaginal ultrasound (US) and were randomized into two groups. In group A the patients received rFSH+GnRH antagonists until the day that the hCG was given, while in group B the patients followed a standard COS received rFSH only. Results: Total amount of rFSH units (620.8+245.1vs 575.5+296.4) and clinical pregnancy rates (31.16% vs 19.15%) were statistically significantly higher in patients who were treated with GnRH antagonists. A similar number of twin pregnancies and miscarriages occurred in both groups. Conclusion: Multiple doses of GnRH antagonists in COS-IUI significantly increase pregnancy rates in multifollicular cycles.

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