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Lancet:排卵期妇女冷冻与新鲜单个囊胚移植比较

2019-04-03 不详 网络

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生殖领域,选择性单胚胎移植(eSET)已越来越受到提倡,但对减少胚胎移植数量后妊娠率降低的担忧同时又支持进行多胚胎移植。延长胚胎培养时间,选择性冷冻所有胚胎,推迟冷冻胚胎移植,可提高胚胎移植后的妊娠率。本研究的目的是确定选择性冷冻单囊胚移植是否比新鲜单囊胚移植提高单胎活产率。

在中国21个学术生育中心进行这项多中心、非盲、随机对照试验,从201681日至201763日,共纳入1650名月经周期正常的女性进行第一次体外受精。符合条件的妇女被随机分配到新鲜或冷冻的单个囊胚转移。随机序列由计算机生成,区块大小为246,按研究地点分层。对于被分配到冷冻囊胚移植组,所有的囊胚均被冷冻保存,并延迟冷冻解冻单个囊胚移植。主要结果是单胎活产率。分析的目的是治疗。本试验在中国临床试验注册中心注册,编号为chictr - ire -14005405

研究发现, 共有825名妇女被分配到每一组,并纳入分析。冷冻单囊胚移植的单胎活产率高于新鲜单囊胚移植(416 [50%]vs . 329 [40%]);相对危险度[RR] 1·26,95% CI 1·14-1·41,p<0·0001)。中度或重度卵巢过度刺激综合征的风险(冷冻单囊胚移植825例中有4[0·5%],新鲜单囊胚移植825例中有9[1·1%];p=0·16),妊娠损失(134583[23·0%]vs 124481[25·8%];p=0·29),两组间其他产科并发症及新生儿发病率相似。冷冻单个囊胚转移与子痫前期的高风险相关(512例中有16[3·1%]401例中有4[1·0%];RR 3·13,95% CI 1·06-9·30,p=0·029)

研究表明,在预后良好的排卵期妇女中,冷冻单囊胚移植比新鲜单囊胚移植具有更高的单胎活产率。冷冻囊胚移植后子痫前期风险的增加值得进一步研究。

原始出处:

Daimin Wei,Jia-Yin Liu, Frozen versus fresh single blastocyst transfer in ovulatory women: a multicentre, randomised controlled trial

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    2019-08-15 howi
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