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目的探讨冻融周期中玻璃化和程序化两种不同方法对人卵裂期胚胎的冷冻复苏效果。方法回顾性分析35例玻璃化冷冻复苏周期和123例程序化冷冻复苏周期资料,比较冷冻胚胎复苏后的胚胎存活率、完整性胚胎存活率,冻融前后的优质胚胎率,临床妊娠率、胚胎种植率。结果①玻璃化法与程序化法冷冻前优质胚胎率无显著性差异(70.83%和71.97%,P>0.05),冷冻后优质胚胎率差异显著(63.89%和47.75%,P<0.05),复苏后的胚胎存活率差异显著(95.83%和86.16%,P<0.05),完整性胚胎存活率差异极显著(90.28%和63.32%,P<0.01);②玻璃化法与程序化法临床妊娠率差异显著(48.57%和29.27%,P<0.05),种植率差异显著(31.88%和18.83%,P<0.05)。结论在冻融人卵裂期胚胎的过程中,玻璃化优于程序化,可以更好的提高累积临床妊率。
Objective To investigate the effects of vitrification and programmed procedures on the cryopreservation of human cleavage stage embryos. Methods A retrospective analysis of 35 cases of vitrification and 123 cycles of frozen-thawed cycles was performed to compare the survival rate of embryos after cryopreservation, the survival rate of intact embryos, the quality of embryos before and after freezing and thawing, the clinical pregnancy rate, embryo Planting rate. Results ① There was no significant difference between pre-freezing and pre-freezing embryos (70.83% vs 71.97%, P> 0.05). There were significant differences in high-quality embryos after freezing (63.89% vs 47.75%, P <0.05) (95.83% vs 86.16%, P <0.05). The difference of complete embryo survival rates was significant (90.28% vs 63.32%, P <0.01). ② The clinical pregnancy rates of vitrification and programmed procedures (48.57% vs 29.27%, P <0.05). The differences in implantation rate were significant (31.88% vs 18.83%, P <0.05). Conclusion During the process of freezing-thawing human cleavage stage embryos, vitrification is better than programmed, which can improve the cumulative clinical pregnancy rate.