生殖辅助医疗中心
什么是自然周期下的子宫内膜准备?
为计划冷冻胚胎移植而进行的子宫内膜准备对妇女来说是一个相对简单的过程。
在传统的准备周期(使用激素治疗)中,女性口服或经皮下注射雌激素(约两周),以达到良好的子宫内膜厚度。随后,在将胚胎注入子宫腔前五天开始,经阴道和/或皮下补充黄体酮。
然而,对于某些患者来说,药物治疗是一个风险因素,因此,对于月经周期规律的高龄女性,我们越来越多地选择自然周期下准备。
这种自然周期治疗包括监测妇女的生理周期。需要进行超声波扫描和激素检测,以了解当月所选卵泡的生长情况,并逐步产生自身水平的雌二醇,从而以自然的方式帮助子宫内膜增厚。一旦确定卵泡大小合适,我们就会使用 HCG 进行排卵性排卵,以确保排卵,这将有助于黄体的形成,并产生正确水平的内在孕酮。
由于雌二醇和孕酮的自身分泌,子宫内膜将自然地为计划移植日做好准备。
自然周期的准备需要对患者进行更密切、更细致的监测,因此需要比人工周期更多的面对面控制,但对妇女和未来妊娠的医学优势越来越科学化,此外,药物的经济成本也更低。
自然周期中的冷冻移植与较高的激素水平有关,因此有利于怀孕和着床,胎盘问题也较少,即高血压风险较低,因此怀孕和着床的风险也较低。
降低怀孕期间高血压和先兆子痫的风险。
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