获卵数目对有效胚胎形成率的影响:2578个体外受精周期分析
发布时间:2018-08-05 15:04
【摘要】:目的探讨体外受精/卵胞质内单精子注射-胚胎移植(IVF/ICSI-ET)中影响可用胚胎率的主要因素。方法回顾性分析行IVF/ICSI-ET治疗的2 578个周期共24 772枚卵母细胞。按获卵数将其分为A组(1~5)、B组(6~10)、C组(11~15)、D组(16~20)、E组(20),比较各组的受精率、卵裂率、MⅡ卵率、有效胚胎形成数(率)、妊娠率及胚胎种植率等。采用多因素线性回归分析筛选出影响受精率、卵裂率、卵子成熟率以及可用胚胎数(率)的独立相关因素,同时排除单因素分析中出现的混杂。结果单因素分析各组卵子成熟卵率有差异,但没有看到趋势性变化;IVF受精率在各组间有统计学差异,而ICSI受精率各组间无统计学差异。卵裂率各组间无统计学差异,可用胚胎数以及冷冻胚胎数A~E组依次增加,而可用胚胎率随着获卵数的增加却逐渐降低(44.6%、36.0%、33.5%、29.4%、28.8%,P=0.00)。多因素分析提示取卵数的标准化回归系数的绝对值最大(B=-0.205,P=0.00),t的绝对值也最大(t=-8.299),表明取卵数对可用胚胎率的影响最大,提示取卵数越多,可用胚胎率越低。而卵子数目对卵子成熟率、受精率以及卵裂率没有影响。结论随着取卵数的增多,虽然可用胚胎数是增加的,但可用胚胎的转化率却降低了。今后的促排卵目标不是产生的卵子越多越好,而是采用合适的方案尽量减少对卵巢的过度刺激,获得一定数量的正常卵子并形成优质的可供移植的胚胎。
[Abstract]:Objective to investigate the main factors influencing the availability of embryos during in vitro fertilization / intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET). Methods A total of 24 772 oocytes from 2 578 cycles treated with IVF/ICSI-ET were retrospectively analyzed. According to the number of eggs obtained, they were divided into two groups: group A (1 / 5), group B (6 / 10), group C (11 / 15) and group D (16 / 20) / E (20). The fertilization rate, cleavage rate (M 鈪,
本文编号:2166156
[Abstract]:Objective to investigate the main factors influencing the availability of embryos during in vitro fertilization / intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET). Methods A total of 24 772 oocytes from 2 578 cycles treated with IVF/ICSI-ET were retrospectively analyzed. According to the number of eggs obtained, they were divided into two groups: group A (1 / 5), group B (6 / 10), group C (11 / 15) and group D (16 / 20) / E (20). The fertilization rate, cleavage rate (M 鈪,
本文编号:2166156
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