Title: Efects of Developmental Potential of by Vitrified-Thawed human Day 3 embryo
Abstract: Objective The aim of this study was to compare two methods of cryopreservation for the cleavage-stage human embryos: slow freezing and vitrification.Methods The embryos at cleavage stages were cryopreserved either with vitrification(40 patients) methods as vitrified group or with slow freezing(41 patients) methods as control group.After warming;the survival rate,the post-warmed embryo clinical pregnancy and implantation rate were evaluated and compared between the two groups.Results The overall survival rate was significantly higher with vitrification of human cleavage stage than with slow freezing(95.1% vs.64.4%).The better implantation and pregnancy rates in the vitrification group(30.4% and 50%,respectively) was compared with those of the slow freezing group(17.9% and 26.8%,respectively)(P0.05).Conclusions These data provide further evidence that vitrification and slow freezing both could be used to cryopreserved embryos,but a better effect could be received when the Day 3 human embryos were vitrified.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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