为什么医生都不建议移植两个囊胚,主要还是有较多风险
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一般来说,双胎妊娠要高于单胎妊娠,虽然妊娠率会更高,但妊娠高血压、早产、产后出血等并发症的风险也会更高。我相信很多不孕女性会问医生能不能放两个囊胚,但是医生一般不建议移植两个囊胚,主要是担心风险。为此,以下文章将介绍两个囊胚体外移植的风险,供大家参考。
为什么不移植两个囊胚
目前相关政策对胚胎移植数量有严格要求。通常情况下,35岁以下的患者不能移植超过2个胚胎,35岁以上的患者不能移植超过3个胚胎。随着囊胚培养成功率的提高和移植成功率的稳定,为了降低多胎妊娠的风险,许多生殖中心都在逐渐提倡单囊胚移植。在国内生殖医学中心,一次移植一个囊胚已经成为主流和趋势,既能让临床妊娠率和活产率,又能降低多胎妊娠的风险。
主要原因是
相信很多人对移植1个和2个囊胚的区别都有所了解,虽然很多姐妹在做试管的时候都想移植两个囊胚,但是并非人人都适合双胎妊娠,大部分生殖医生会建议进行单囊胚移植,尤其是有反复流产史、子宫畸形等患者,下面是不能移植两个囊胚的原因,具体内容如下:
双胎妊娠风险 同时移植两个囊胚如果怀上双胎,那么双胎妊娠风险会比较高,双胎妊娠在空间上拥挤给胚胎发育带来障碍,容易出现妊娠期并发症,比如流产、妊娠期高血压等是单胎妊娠的3-4倍,并且容易出现严重并发症,对孕妇身体健康有很大影响;
对新生儿有危害 大部分试管双胎新生儿畸形率是单胎2-3倍,而超过50%双胎会出现早产的情况,大约有25%试管双胎宝宝会进新生儿重症监护室,并且双胎宝宝患脑瘫的几率是单胎的4倍;
双胎妊娠费用高 少部分孕妇也许能躲过严重的妊娠期疾病并完成分娩,通常双胎妊娠花费是单胎4.4倍,如果新生儿出生体重比较低,大概需要住院50-90天,光新生儿平均住院费用就高达12万左右,还不包括后遗症治疗以及后续康复治疗的费用。
在试管移植阶段,如果女性有多个可用胚胎情况下,医生会选择胚胎等级评分最佳的胚胎进行移植,也就是选择性单胚胎移植,生殖中心常见采用单囊胚移植(在体外培养5-6天的胚胎),然后囊胚经过二次筛选后,胚胎染色体异常率会更低,有更高的临床妊娠率。
因为囊胚移植的成功率比较高,风险比较低,所以现在很多医院都建议患者移植一个囊胚。当然,如果他们坚持要移植两个囊胚,建议试管患者咨询医生,尽量听取他们的意见和建议。囊胚移植后,他们也需要注意相应的注意事项。
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