Hum Reprod:胚胎移植前子宫内膜过薄增加异位妊娠的风险

2015-12-18 candy译 MedSci原创

研究问题:胚胎移植(ET)前测量的子宫内膜厚度(ECT),是否与异位妊娠(EP)有关?总结回答:随访IVF,发现子宫内膜厚度小于9mm,异位妊娠的风险在比大于12mm的女性增加了4倍。已知:已知的异位妊娠风险因素包括输卵管损伤、母亲吸烟和子宫内膜异位。IVF发生异位妊娠也是较普遍的,但是潜在的原因仍然不清楚。研究设计、大小、持续时间: 2006年1月至2014年12月间8120行IVF中,选择IV

研究问题:胚胎移植(ET)前测量的子宫内膜厚度(ECT),是否与异位妊娠(EP)有关?

总结回答:随访IVF,发现子宫内膜厚度小于9mm,异位妊娠的风险在比大于12mm的女性增加了4倍。

已知:已知的异位妊娠风险因素包括输卵管损伤、母亲吸烟和子宫内膜异位。IVF发生异位妊娠也是较普遍的,但是潜在的原因仍然不清楚。

研究设计、大小、持续时间:
2006年1月至2014年12月间8120行IVF中,选择IVF周期后受孕成功者(βhCG > 50 IU/l),最后6465例患者被纳入到本次回顾性队列研究中。排除移植前使用遗传基因筛查和卵母细胞捐赠的患者。

参与者/材料,设置,方法:从莫纳什、墨尔本、澳大利亚这几个私人IVF集团中,获取6920例周期刺激后新鲜胚移植(STIM ET)的患者,其中6465例成功受孕者被纳入到本队列中,以及另外1200例激素替代疗法后冻胚移植(HRT-FET)后成功受孕的患者。子宫内膜厚度(ECT)是主要独立变量;主要结果用来诊断是否异位妊娠(EP)。使用SPSS v22.0软件分析数据库,计算EP的OR值,以及调整已知混杂因素的OR(aOR)。数据库在随访期间未丢失。

主要结果和机会的作用:在IVF治疗前,组间无明显差异。调整混杂因素后,ECT作为EP的独立风险因素始终保持统计学意义。ECT在9-12mm间的女性较ECT<9mm的aOR值为0.44 (95% CI 0.29–0.69, P < 0.01),较ECT>12mm的aOR值为0.27 (95% CI 0.10–0.77, P = 0.01)。在敏感性分析排除HRT-FET、吸烟和输卵管性不孕者后,这些差异始终具有统计学意义。

限制、理由和谨慎:设计的为回顾性研究,而且有可能没有把所有因素都囊括。ECT通过训练有素的超声医生测量,但是会出现个体间的不一致。

研究结果的更广泛含义:研究者早前已发现增厚的子宫内膜会增加前置胎盘的风险。这些新的发现证明子宫收缩波的方向比频率和振幅更重要。将这两项研究成果结合,研究者以此假设:ECT的增加是子宫基底至宫颈收缩增加的标志,意味者胎盘前置风险增加,而异位妊娠的风险降低。今后需要前瞻性的研究以确定这些观察结果。

原始出处:
Rombauts, L., et al. (2015). "Risk of ectopic pregnancy is linked to endometrial thickness in a retrospective cohort study of 8120 assisted reproduction technology cycles." Hum Reprod 30(12): 2846-2852.


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    2015-12-19 ailian1202
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    2015-12-19 sunylz

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