王雪,甄璟然,孙正怡,郁琦,邓成艳,周远征,王含必,何方方
(中国医学科学院 北京协和医学院 北京协和医院妇产科生殖中心,北京 100730)
·临床研究·
囊胚冷冻保存时间对复苏移植临床结局的影响
王雪,甄璟然,孙正怡*,郁琦,邓成艳,周远征,王含必,何方方
(中国医学科学院 北京协和医学院 北京协和医院妇产科生殖中心,北京100730)
【摘要】目的分析冷冻保存时间对复苏后胚胎质量的影响,进一步探讨长期胚胎冷冻保存是否对临床结局产生影响。方法回顾性分析2005年12月至2015年1月在我院辅助生殖中心进行复苏囊胚移植患者的临床资料。按照复苏前囊胚的冷冻保存时间将1 808个移植周期分为7组,第1组为≤90 d、第2组为91~180 d、第3组为181~360 d、第4组为361~720 d、第5组为721~1 080 d、第6组为1 081~1 440 d、第7组为≥1 441 d。比较7组的复苏后存活率、种植率、临床妊娠率、流产率和活产率以及各组间单胎的新生儿出生结局。结果7组间胚胎存活率、胚胎种植率、生化妊娠率、临床妊娠率、流产率和活产率比较均无统计学差异(P均>0.05);7组间的单胎新生儿出生结局比较亦无统计学差异(P>0.05)。结论本研究提示胚胎长期冷冻保存对冻融胚胎的质量及发育潜力影响不大,但囊胚长期冷冻保存的远期安全性还有待于进一步研究。
【关键词】冻融胚胎移植;冷冻保存时间;种植率;临床妊娠率;活产率
Objective: To analyze the effect of cryopreservation storage time on embryo quality after frozen-thawed and clinical pregnancy outcome.
Methods: The data of 1 808 transfer cycles with frozen-thawed blastocysts in our productive center from December 2005 to January 2015 were retrospectively analyzed. The patients were divided into 7 groups according to the cryopreservation storage time:group 1(≤90 days);group 2 (91-180 days);group 3 (181-360 days);group 4 (361-720 days);group 5 (721-1 080 days);group 6 (1 081-1 440 days);group 7(≥1 441 days). And then the survival rate,implantation rate,pregnancy rate and live birth rate were compared among the seven groups.
Results: The storage time did not significantly affect embryo survival rate. There were no significant differences in implantation rate,pregnancy rate,abortion rate and live birth rate among the seven groups (all P>0.05). The outcomes of single fetus newborn were also not significantly different(P>0.05).
Conclusions: The study results indicate that the cryopreservation storage time do not affect embryo quality and embryo developmental potential. More studies are needed to evaluate the safety of long-term cryopreservation.
Key words: Frozen-thawed embryo transfer;Cryopreservation storage time;Implantation rate;Pregnancy rate;Live birth rate
(J Reprod Med 2016,25(5):389-394)
自1983年第一例人类冷冻胚胎成功临床妊娠后,人类胚胎冷冻保存技术迅速发展并广泛地被世界各地的辅助生殖中心接受,成为辅助生殖技术的重要组成部分。胚胎冻融……