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做试管婴儿的流程步骤分别为哪些?
做试管婴儿的流程步骤分别为哪些?
2020-05-25
其实人们经常说的“试管婴儿”医学术语称体外受精-胚胎移植,是指从女方卵巢内取出卵子,在体外与精子发生受精并在体外培养3-5日,再将发育到卵裂期(体外发育第3天)或囊胚期(体外发育第5-6天)阶段的胚胎移植到女方子宫腔内,使其着床发育成胎儿的全过程。
与自然妊娠相比,试管婴儿精子、卵子结合受精部位在体外实验室环境下、人工操作完成;与人工授精相比,促排卵治疗强度增加、对卵巢刺激加大,但仍是有序可控的,一般获卵9-15个。并且,女方增加了经阴道穿刺取卵和胚胎移植的手术过程,都在人体可耐受范围。
试管婴儿的主要步骤
1 药物刺激卵巢,促进多个卵泡(9-15个)发育成熟,期间定期B超检查卵泡大小、抽血检测激素水平、调整用药,直到主导卵泡簇发育成熟; 2 经阴道超声介导下取卵手术,一般采用局部麻醉,少有静脉麻醉;
3 女方取卵同时,男方取精、体外优化处理(同人工授精),生殖医学科实验室人员将卵母细胞和精子体外共培养,即体外受精、体外培养;
4 当胚胎发育至第3天(卵裂期)或第5-6天(囊胚期),选择达到评分移植标准的胚胎,生殖医学专科医生用胚胎移植管将胚胎(1-2个)移植入女方子宫腔内;
6 黄体支持治疗,一般应用口服、阴道塞药或肌肉注射用药,促进胚胎着床、发育。
胚胎移植术后10-14天抽血验孕。
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