[Effect of trial transfer on embryo transfer techniques].
OBJECTIVE
To evaluate the effect of trial transfer on embryo transfer.


METHODS
Embryo transfer guided by ultrasound was performed in 114 cycles. And trial transfer was accomplished in 101 of them prior to embryo transfer. The clinical pregnancy rate and embryo implantation rate were compared between the group with trial transfer and the group without, and also among the sub-groups formed according to the difference between the trial transfer position and the actual embryo depth.


RESULTS
There was no statistically significant difference in the clinical pregnancy rate and embryo implantation rate between the group with trial transfer and that without trial transfer(59.41% vs 61.54%, 35.81% vs 31.43%, P > 0.05), nor was there between the two subgroups of the group with trial transfer (61.54% vs 58.67%, 40.79% vs 34.09%, P > 0.05).


CONCLUSIONS
As far as modern embryo transfer techniques are concerned, trial transfer can not provide accurate guidance for the depth of embryo transfer.
Sun
Hai-Xiang
HX
Reproductive Medicine Center, Drum Tower Hospital, Nanjing University Medical College Nanjing, Jiangsu 210008, China.
Hu
Ya-Li
YL
Wang
Bin
B
Zhang
Ning-Yuan
NY
Xu
Zheng-Feng
ZF
Wang
Hui-Yan
HY
D000328:Adult; D004624:Embryo Transfer; D004717:Endometrium / Q000000981:diagnostic imaging; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D014463:Ultrasonography