Document Detail

Vitrification of oocytes produces high pregnancy rates when carried out in fertile women.
MedLine Citation:
PMID:  19217099     Owner:  NLM     Status:  In-Process    
OBJECTIVE: To determine the efficiency of our vitrification technique when applied in young fertile women. DESIGN: Clinical research and application. SETTING: In vitro fertilization center. PATIENT(S): Twenty-one women were recruited from the navy community with 19 patients finishing the study. INTERVENTION(S): Vitrified oocytes with use of the electron microscopic grid method were warmed 6 months after vitrification. Surviving metaphase II oocytes were microinjected for fertilization, and clinical results were evaluated. MAIN OUTCOME MEASURE(S): Survival, fertilization, and cleavage rate. Pregnancy and implantation rate. RESULT(S): Three hundred ninety-five oocytes were warmed, of which 320 oocytes (81.0%) survived. Two hundred eighty-five metaphase II oocytes were microinjected for fertilization; 206 of them (72.3%) fertilized, and 53 embryos were transferred to 19 patients (in 20 warming cycles). Twenty-four of 53 transferred embryos (45.3%) implanted as confirmed by ultrasound examination. Of the 20 transfers, 16 resulted in clinical pregnancy (80%), 3 miscarried (15%), and 13 (65%) went on to produce 20 live births, respectively. This is much higher in comparison with our previous data using supernumerary oocytes where the rates of implantation and pregnancy were 6% and 21%. Live-birth rates per warmed oocyte and per injected oocyte were 5.1% and 7.2%, respectively. CONCLUSION(S): High pregnancy and implantation rates were observed after 6 months of cryopreservation by vitrification when oocytes from fertile woman were used. Proper screening of candidates for oocyte cryopreservation is of crucial importance to assure a favorable pregnancy outcome.
Thomas J Kim; Larry R Laufer; Seung Wook Hong
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-02-12
Journal Detail:
Title:  Fertility and sterility     Volume:  93     ISSN:  1556-5653     ISO Abbreviation:  Fertil. Steril.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-01-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372772     Medline TA:  Fertil Steril     Country:  United States    
Other Details:
Languages:  eng     Pagination:  467-74     Citation Subset:  IM    
Copyright Information:
Copyright 2010 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.
Reproductive Medicine Associates of New Jersey, Morristown, New Jersey, USA.
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