预移植在胚胎移植中的意义

目的 :评价预移植在胚胎移植中的作用。　方法 :在超声波引导下胚胎移植 114个周期 ,其中 10 1个周期进行预移植。比较预移植与未预移植周期临床妊娠率和胚胎种植率 ;按预移植与实际胚胎放置深度差值分组 ,并比较两组妊娠率和胚胎种植率。　结果 :预移植周期与未预移植周期临床妊娠率和种植率统计学差异无显著性(5 9.4 1%和 6 1.5 4 % ,35 .81%和 31.4 3% ,P均 >0 .0 5 ) ;按预移植与实际胚胎放置深度差值分组后 ,两组妊娠率和种植率统计学差异也无显著性 (6 1.5 4 %和 5 8.6 7% ,4 0 .79%和 34.0 9% ,P均 >0 .0 5 )。　结论 :在胚胎移植技术中 ,预移植不能准确指引胚胎移植深度

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 ). Conclusion: As far as modern embryo transfer techniques are concerned, trial transfer can not provide accurate guidance for the depth of embryo transfer.