BMJ:冷冻囊胚移植vs新鲜囊胚移植对体外受精女性妊娠率的影响

2020-08-08 MedSci原创 MedSci原创

对于经周期规律女性,接受促性腺激素释放激素激动剂诱导后,冷冻囊胚移植或新鲜囊胚移植之间的妊娠率和不良事件率无显著差异。

近日研究人员比较了冷冻与新鲜囊胚移植对体外受精女性妊娠率的影响。
 
研究在丹麦、瑞典和西班牙开展,460名年龄在18-39岁之间,月经周期规律的女性参与,在接受促性腺激素释放激素激动剂诱导后,随机接受单次冻融囊胚移植或新鲜囊胚移植。研究的主要终点为持续妊娠率,定义为妊娠8周后可检测到的胎心。次要结果为活产率、人绒毛膜促性腺激素阳性率、妊娠时间、妊娠相关、产科和新生儿并发症。
 
研究发现,冷冻组和新鲜移植组的持续妊娠率无显著差异(冷冻组:27.8%(62/223) vs 新鲜移植组:29.6%(68/230);比值比0.98)。此外,组间活产率无显著差异(冷冻组:27.4%(61/223) vs 新鲜移植组:28.7%(66/230);比值比0.98)。
主要终点比较
两组间的人绒毛膜促性腺激素阳性率或妊娠丢失率无显著差异,且无参与者出现严重的卵巢过度刺激综合征。除冷冻囊胚移植后平均出生体重较高,而新鲜囊胚移植后早产风险增加外,两组之间妊娠相关、产科和新生儿并发症风险没有差异。冷冻组的妊娠时间较长。
次要终点比较
 
研究认为,对于经周期规律女性,接受促性腺激素释放激素激动剂诱导后,冷冻囊胚移植或新鲜囊胚移植之间的妊娠率和不良事件率无显著差异。
 
原始出处:
 
Sacha Stormlund et al. Freeze-all versus fresh blastocyst transfer strategy during in vitro fertilisation in women with regular menstrual cycles: multicentre randomised controlled trial. BMJ. 05 August,2020.

 

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    2021-02-03 gaoxiaoe
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    2020-08-08 1240394fm61暂无昵称

    学习

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    2020-08-08 ms4000000062793346

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PNAS:龙凤胎虽好,对女性不利

对于准妈妈而言,怀上龙凤胎简直就像中奖一样。然而,美国和挪威的研究人员近日却发现,龙凤胎中男性的睾酮会对他的双胞胎姐妹产生长期的影响。这项成果于本周发表在《美国科学院院刊》(PNAS)杂志上。