Document Detail

Follicular growth and oocyte maturation in GnRH agonist and antagonist protocols for in vitro fertilisation and embryo transfer.
MedLine Citation:
PMID:  19340626     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The aim of this study was to evaluate the response to treatment in a group of patients undergoing IVF and randomised to receive GnRH-antagonist or the GnRH-agonist. The endpoints were the pattern of follicular growth, the maturity of the oocytes collected, the embryo quality and the pregnancy outcome. METHODS: A total of 136 patients undergoing IVF were included. Sixty-seven patients were allocated to the GnRH antagonist and 69 patients to the GnRH agonist. GnRH antagonist was administered when the leading follicle reached a diameter of 12-14 mm. GnRH agonist was administered in a long luteal protocol. RESULTS: The mean numbers of oocytes retrieved and mature oocytes were significantly higher in the agonist than in the antagonist group (p < 0.02 and p < 0.01, respectively). Embryo quality, implantation rate, clinical pregnancy rates, ongoing pregnancy rate and miscarriage rate were similar in both groups. CONCLUSIONS: Better follicular growth and oocyte maturation are achieved with GnRH agonist treatment. However, both regimens seem to have similar efficacy in terms of implantation and pregnancy rates. Further studies clarifying the effect of the GnRH antagonist on ovarian function are needed, as well as a clear definition of the best period of the follicular phase for the GnRH antagonist administration.
Raffaella Depalo; Filomenamila Lorusso; Marcella Palmisano; Emma Bassi; Ilaria Totaro; Margherita Vacca; Paolo Trerotoli; Paola Masciandaro; Luigi Selvaggi
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology     Volume:  25     ISSN:  1473-0766     ISO Abbreviation:  Gynecol. Endocrinol.     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-11-11     Completed Date:  2010-01-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8807913     Medline TA:  Gynecol Endocrinol     Country:  England    
Other Details:
Languages:  eng     Pagination:  328-34     Citation Subset:  IM    
Department of Gynecology, Obstetrics and Neonatology, Gynecology and Obstetric Unit A, University of Bari, Piazza Giulio Cesare, Bari, Italy.
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MeSH Terms
Embryo Transfer
Embryo, Mammalian / drug effects
Fertilization in Vitro
Gonadotropin-Releasing Hormone / agonists*,  antagonists & inhibitors*
Oocytes / drug effects*,  growth & development
Ovarian Follicle / drug effects*
Ovulation Induction / methods*
Pregnancy Outcome
Reg. No./Substance:
33515-09-2/Gonadotropin-Releasing Hormone

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