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体外受精(IVF)项目中临床妊娠受许多因素的影响:病例选择、诱导排卵方案、取卵技术、卵子及胚胎质量、子宫接受性、实验室方案和胚胎移植技术。胚胎移植(ET)是IVF技术最后一步的操作,却是目前效率最低的步骤。大多数IVF项目一直凭借医生“感觉”将导管和胚胎放入子宫腔接近官底的位置。为改善移植技术及妊娠率,进行ET导管的选择和胚胎进入宫腔的超声显像两种因素的回顾性分析。1996年11月～1998年10月间的IVF/ET周期,包括单精子胞浆内注射(ICSI)。分析指标包括导管的选择、移植难度、超声引导及经腹超声图像质量、获卵数目、ET数目、注射hCG日内膜接受性、内
Clinical pregnancy in IVF programs is influenced by many factors: case selection, induction of ovulation programs, ovulation techniques, egg and embryo quality, uterine receptivity, laboratory protocols and embryo transfer techniques. Embryo transfer (ET) is the last step in IVF technology, but it is by far the least efficient step. Most IVF projects have been using doctors to “feel” catheters and embryos into the uterine cavity near the bottom of the crown. To improve the technique of transplantation and pregnancy rate, retrospective analysis of two factors, ET catheter selection and embryonic uterine ultrasound imaging, was performed. The IVF / ET cycles between November 1996 and October 1998 included intracytoplasmic sperm injection (ICSI). Analysis of indicators including the choice of catheter, the difficulty of transplantation, ultrasound guidance and abdominal ultrasound image quality, the number of oocytes, the number of ET, endometrial receptivity within hCG injection, within