任琴莹,曾湘晖

冻融胚胎移植Freeze-thaw embryo transfer（FET）作为人类辅助生殖技术的关键组成部分，采用低温技术对新鲜周期移植后的剩余胚胎进行冷冻保存，以便在移植失败或条件适宜的情况下再次进行移植。这种方法能有效提升累计妊娠率、减少多胎率、降低促排卵次数，并降低卵巢多度刺激综合征的发病率，同时也减轻了患者在取卵过程中的经济压力和痛苦。然而，FET周期的妊娠结果会受到多个因素的影响，这些因素包括患者的年龄、体重指数（BMI）、胚胎的数量和质量、胚胎冷冻的方式和时间、子宫内膜、心理状态等。本研究旨在分析影响FET周期妊娠结果的各种因素，以便为临床实践中为FET成功率提供有用的参考依据。

冻融胚胎；生殖技术，辅助；低温保存；生育力；妊娠结局

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