Mansour R, Aboulghar M, Serour G
Egyptian IVF-ET Center, Cairo University.
Fertil Steril. 1990 Oct;54(4):678-81. doi: 10.1016/s0015-0282(16)53829-1.
Three hundred thirty-five patients selected for in vitro fertilization (IVF) were randomly divided into two groups. Group A (n = 167) was subjected to dummy embryo transfer (ET) before the start of IVF treatment to choose the most suitable catheter for each patient. Group B (n = 168) started their IVF treatment without dummy ET. Embryo transfer technique was difficult in 50 cases (29.8%) in group B, whereas no difficulty was met in group A. Pregnancy rate and implantation rate (22.8%, 7.2%) in group A were significantly higher than in group B (13.1%, 4.3%). The lower pregnancy rate in group B is due to the very low pregnancy rate (4%) in difficult ET cases. Dummy ET is a simple procedure that determines the most suitable ET catheter for each patient and avoids unexpected difficult and failed ET.
335名接受体外受精（IVF）的患者被随机分为两组。A组（n = 167）在IVF治疗开始前进行模拟胚胎移植（ET），以便为每位患者选择最合适的导管。B组（n = 168）在未进行模拟ET的情况下开始IVF治疗。B组中有50例（29.8%）的胚胎移植技术困难，而A组未遇到困难。A组的妊娠率和着床率（22.8%，7.2%）显著高于B组（13.1%，4.3%）。B组较低的妊娠率是由于ET困难病例中的妊娠率非常低（4%）。模拟ET是一种简单的操作，可为每位患者确定最合适的ET导管，并避免意外的ET困难和失败。
