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Triggering ovulation with 250 μg or 500 μg of r-hCG in oocyte donors treated with antagonist protocol has no effect on the number of mature oocytes retrieved: a randomized clinical trial.
MedLine Citation:
PMID:  22304627     Owner:  NLM     Status:  Publisher    
The aim of this study is to compare two r-hCG doses to trigger ovulation (250 μg vs. 500 μg of r-hCG) in an oocyte donation program. A prospective, randomized study was conducted in 118 oocyte donors. Group DI received 250 μg and Group DII received 500 μg of r-hCG. Both the groups were homogeneous. No significant differences were found in the total dose of gonadotropins, duration of the treatment, total number of oocytes, or Metaphase II (MII)oocytes. The pregnancy rate per embryo transfer in the corresponding recipients was similar for both the groups (58.2% for DII recipients and 56.1% for DI recipients). Mild hyperstimulation was observed in 17 donors in Group DI (29%) and in 23 donors in Group DII (39%). No cases of severe ovarian hyperstimulation syndrome (SOHSS) were observed. In conclusion, a double dose of r-hCG in oocyte donors to trigger ovulation after stimulation with r-FSH and antagonist does not translate into a higher number of MII oocytes retrieved or into higher pregnancy rates among recipients. Our results confirm that the optimal dose to induce the final oocyte maturation with r-hCG is 250 μg, and that a higher dose does not add any benefit.
Elisabet Clua; Francisca Martínez; Rosa Tur; Paula Sanmartín; Ana Chueca; Pere N Barri
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-4
Journal Detail:
Title:  Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology     Volume:  -     ISSN:  1473-0766     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8807913     Medline TA:  Gynecol Endocrinol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Servei de Medicina de la Reproducció, Departament d'Obstetrícia, Ginecologia i Reproducció, Institut Universitari Dexeus , Barcelona , Spain.
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