Zhao Xiao-hui, Song Xue-ru, Sui Xiao-lin, Bai Xiao-hong
Center of Reproductive Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China.
Zhonghua Fu Chan Ke Za Zhi. 2007 Aug;42(8):530-2.
To investigate the influence of transfer distance from the fundus on clinical pregnancy rate and implantation rate in in vitro fertilization and embryo transfer.
A total of 98 patients (108 cycles) undergoing ultrasound-guided embryo transfer were divided into two groups according to the distance between the tip of catheter and the uterine fundus: group A: > or = 5 - < 10 mm, group B: > or = 10 - < or = 15 mm.
Clinical pregnancy rate and implantation rate were significantly higher in group B compared with group A [44 % (23/52) vs 25% (14/56), 24% (28/115) vs 14% (17/121), P < 0.05]. The multiple pregnancy rate, ectopic rate and miscarriage rate were similar in the two groups (P > 0.05).
The depth of the embryo replacement into the uterine cavity may influence pregnancy rate and implantation rate.
探讨体外受精-胚胎移植时胚胎移植管尖端距子宫底的距离对临床妊娠率及种植率的影响。
对98例（108个周期）接受超声引导下胚胎移植的患者，根据移植管尖端距子宫底的距离分为两组：A组：≥5～＜10mm，B组：≥10～≤15mm。
B组的临床妊娠率和种植率显著高于A组[44%（23/52）对25%（14/56），24%（28/115）对14%（17/121），P＜0.05]。两组的多胎妊娠率、异位妊娠率和流产率相似（P＞0.05）。
胚胎移植入宫腔的深度可能影响妊娠率和种植率。
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