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Replacing GnRH agonists with GnRH antagonists in oocyte recipient cycle did not adversely affect the pregnancy rates

Authors
Journal
European Journal of Obstetrics & Gynecology and Reproductive Biology
0301-2115
Publisher
Elsevier
Volume
159
Issue
2
Identifiers
DOI: 10.1016/j.ejogrb.2011.06.013
Keywords
  • Endometrial Priming
  • Recipients Synchronization
  • Gnrh Agonist
  • Gnrh Antagonist
Disciplines
  • Design

Abstract

Abstract The synchronization of the donor stimulation with the endometrial preparation of the recipient is usually done by downregulating the recipient's pituitary with a GnRH analog. Objective The aim of this study is to compare pregnancy and implantation rates among premenopausal oocyte recipients synchronized by pituitary suppression with GnRH agonist (Group AGO) or antagonist (Group ANTAG) and standard endometrial preparation with estrogen and gestagen. Study design Prospective, observational, transversal, comparative study. Consecutive recipients treated at Institut Universitari Dexeus between July 2008 and December 2009. Results One hundred and eighty-three premenopausal women were included. No differences were found regarding the age of donors nor the age of recipients, fertilization rates, number of embryos transferred and embryo quality. No differences were found in clinical pregnancy rates (56.1% Group AGO vs. 52.4% Group ANTAG). Conclusion The administration of GnRH antagonists during endometrial preparation in oocyte recipients facilitates synchronization without affecting the pregnancy rate.

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