短时受精与卵胞浆内单精子注射的临床应用研究

目的　比较采用简化的短时受精与卵胞浆内单精子注射 (ICSI)的临床应用效果 ,以了解体外受精 (IVF)时短时受精的临床应用价值。　方法　全部病例接受常规促超排卵治疗获得卵母细胞 ,根据患者接受体外受精的不同方式分为两组。短时受精组 10 5例 ,采用精卵四孔皿混合培养 ,加精后 2h将卵母细胞转移至新鲜培养基 ,12 1周期 ;对照组 112例 ,采用ICSI,133周期。分别比较两组受精卵的个数、形成胚胎数及临床妊娠率 ,并进行统计分析。　结果　短时受精组共获卵母细胞16 33个 ,正常受精 (双原核 ) 116 4个 (71.3% ) ,形成胚胎数 10 84个 (93.1% ) ,临床妊娠 4 5例 (4 2 .9% ) ;对照组共获卵母细胞 175 2个 ,形成胚胎数 10 97个 ,临床妊娠 4 8例 (4 2 .9% )。两组女方年龄差异无显著性意义 ;受精率、形成胚胎数、移植胚胎数、冷冻胚胎数及妊娠率差异均无显著性意义 (P均 >0 .0 5 )。　结论　短时受精既简便 ,有效 ,又能获得与ICSI受精相同的临床效果。

Clinical study of short time insemination and intracytoplasmic sperm injection

Objective To determine if the shortened exposure of oocytes to sperm can influence the insemination rate and the results of IVF-ET. Methods A total of 217 women were included.They were divided into study group (105 cases) and control group (112 cases). In study group the shortened insemination was used.The oocytes were washed 2 hours after the insemination and transferred into the fresh medium.In control group the classical procedure was used.The oocytes were inseminated by ICSI.The number of retrieved oocytes,fertilized oocytes,the number of embryos were counted and the pregnancy rate was evaluated. Results There was no statistically significant difference between the study and control group in the number of retrieved oocytes (1163 vs 1752),number of embryos (1084 vs 1097),and pregnancy rate ( 42.9% vs 42.9%). Conclusions The shortened exposure of oocytes to sperm is a simple and effective way in IVF-ET.