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GnRH antagonist versus long GnRH agonist protocol in poor IVF responders: a randomized clinical trial.
MedLine Citation:
PMID:  23020996     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: To compare the efficacy of the long GnRH agonist and the fixed GnRH antagonist protocols in IVF poor responders. STUDY DESIGN: This was a randomized controlled trial performed in the Iakentro IVF centre, Thessaloniki, from January 2007 to December 2011, concerning women characterised as poor responders after having 0-4 oocytes retrieved at a previous IVF cycle. They were assigned at random, using sealed envelopes, to either a long GnRH agonist protocol (group I) or a GnRH antagonist protocol (group II). RESULTS: Overall 364 women fulfilled the inclusion criteria and were allocated to the two groups: finally 330 participated in our trial. Of these, 162 were treated with the long GnRH agonist protocol (group I), and 168 with the fixed GnRH antagonist protocol (group II). Numbers of embryos transferred and implantation rates were similar between the two groups (P=NS). The overall cancellation rate was higher in the antagonist group compared to the agonist group, but the difference was not significant (22.15% vs. 15.2%, P=NS). Although clinical pregnancy rates per transfer cycle were not different between the two groups (42.3% vs. 33.1%, P=NS), the clinical pregnancy rate per cycle initiated was significantly higher in the agonist compared to the antagonist group (35.8% vs. 25.6%, P=0.03). CONCLUSIONS: Although long GnRH agonist and fixed GnRH antagonist protocols seem to have comparable pregnancy rates per transfer in poor responders undergoing IVF, the higher cancellation rate observed in the antagonist group suggests the long GnRH agonist protocol as the first choice for ovarian stimulation in these patients.
Authors:
Yannis Prapas; Stamatios Petousis; Themistoklis Dagklis; Yannis Panagiotidis; Achilleas Papatheodorou; Iuliano Assunta; Nikos Prapas
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-25
Journal Detail:
Title:  European journal of obstetrics, gynecology, and reproductive biology     Volume:  -     ISSN:  1872-7654     ISO Abbreviation:  Eur. J. Obstet. Gynecol. Reprod. Biol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-10-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375672     Medline TA:  Eur J Obstet Gynecol Reprod Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.
Affiliation:
Iakentro IVF Center, Thessaloniki, Greece; 3rd Department of Obstetrics and Gynaecology, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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