两种胚胎冻融方法对累积妊娠率的影响

目的比较玻璃化法和程序法对人第3天卵裂期胚胎冻融移植周期累积妊娠率的影响。方法选取程序化冻融周期92例、玻璃化法冻融周期179例,比较分析这两种冻融方法在存活率、累积临床妊娠率等方面的效果。结果玻璃化法在胚胎复苏存活率(94.3%vs53.9%,P<0.01)、复苏完整胚胎形态(89.4%vs36.3%,P<0.01)、累积临床妊娠率(28.2%vs43%,0.010.05)。结论与程序化法比较,玻璃化法可以提高累积妊娠率,是一种高效胚胎冻融方法 。

Influence of two embryo freezing methods on cumulative pregnancy rat

Objective To evaluate the impact of two embryo freezing methods on cumulative pregnancy rate. Methods Seventy-eight patients received 92 F-ET cycles of slow freezing (group A), and 114 patients received 179 F-ET cycles in vitification warmed (group B). After warming, the survival rate, cumulative clinical pregnancy rates were compared between the two groups. Results The survival rate (94.3% vs 53.9%, P<0.01), the post-warmed excellent morphology with all blastomeres intact (89.4% vs 36.3%, P<0.01), the cumulative pregnancy rate (28.2% vs 43%, 0.010.05). Conclusion In contrast to slow freezing, Vitrification provides a higher cumulative pregnancy rate, which serves as an efficient method for the cryopreservation of human cleavage stage embryos.