Document Detail

Experience of freezing human oocytes using sodium-depleted media.
MedLine Citation:
PMID:  21123115     Owner:  NLM     Status:  In-Process    
Human embryo cryopreservation techniques enable the storage of surplus embryos created during assisted reproduction procedures; however, the existence of these same surplus embryos has sparked further debate. What can be their fate once they are no longer desired by their parents or if the parents are deceased? Thus, the level of interest in the cryopreservation of oocytes has increased, as has the necessity for further scientific study. This study had the objective of reporting 10 years of experience of freezing and thawing human oocytes from patients who did not wish to freeze embryos. A total of 159 cycles using frozen–thawed oocytes were performed (mean age 33.7 years). Survival and fertilization rates were 57.4% and 67.2%, respectively. Cleavage rate was 88.4% and the pregnancy rate was 37.7%. Clinical pregnancy was observed in 43 cycles (27.0%) with 14.5% of transferred embryos implanted. These pregnancies delivered 19 boys and 23 girls, two pregnancies are ongoing and nine were miscarriages. The average gestational week was 37.6 weeks and birthweight was 2829.2 g. These data suggest that the use of frozen–thawed oocytes in IVF represents a reasonable alternative for those patients not comfortable with the cryopreservation of supernumerary embryos.
R Azambuja; A Petracco; L Okada; J Michelon; F Badalotti; M Badalotti
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Publication Detail:
Type:  Journal Article     Date:  2010-11-30
Journal Detail:
Title:  Reproductive biomedicine online     Volume:  22     ISSN:  1472-6491     ISO Abbreviation:  Reprod. Biomed. Online     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101122473     Medline TA:  Reprod Biomed Online     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  83-7     Citation Subset:  IM    
Copyright Information:
Crown Copyright © 2010. Published by Elsevier Ltd. All rights reserved.
Fertilitat Reproductive Medicine Centre, Porto Alegre, RS, Brazil.
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