体外受精-胚胎移植过程中多原核孕卵生成的影响因素

目的 探讨体外受精－胚胎移植（ＩＶＦ－ＥＴ）过程中多原核孕卵生成的影响因素及降低该类异常受精的方法。方法 应用多因素Ｌｏｇｉｓｔｉｃ回归方法,分析１４５个ＩＶＦ－ＥＴ周期、１１６８个卵细胞的资料,研究多原核孕卵生成率与夫妇年龄,促超排卵方案,穿刺卵泡数,获取卵细胞数,授精前孵育时间,精液精子与授精精子质量和数量以及卵细胞受精率的关系。结果 成熟卵多原核孕卵生成率与女方年龄和可穿刺卵泡数呈显著性负相

Analyses of the factors affecting the occurrence of polypronuclear embryos in in-vitro fertilization and embryo transfer

Objective To investigate the factors affecting the occurrences of the polypronuclear embryos in in-vitro fertilization and embryo transfer (IVF-ET ). Wethods The data from 145 IVF-ET cycles and 1 168 oocytes were analyzed by logistic regession for multiple factors. The influeare of tha Couple's age, the superovulation stimulation protocols, the mumber of the follicles punctured and the oocytes obtained, the preinseminational inatrval,the quality and quantity of seminal and inseminatioal sperms,and the oocyte fertilization ratio on ratio on the incidences of the polypronlear embryos from the matured, and immature oocytes were examined respectively.Results The incidence of the polpronuclear embryos from matured oocytes was significantly negatively correlated with the woman age and the number of the age and the number of the follicles punctured, and the incidence from immature oocytes was significantly positively with the density of sperms at grade a and b and the oocyte fertilization ratio.Conclusions The woman's age and the number of follicles are the main factors which influence the occurrence of polypronclear embryos for matured oocytes, while the density of the seminal sperm with high motility and the fertilization ratio play important roles in the occurrence of polypronuclear embryos in immature oocytes.Stimulating greater number of follicles might be benefit for the reduction of occurrence of polypronuclear embryos.