1、 Nonmotile but viable sperm, as determined by the HOS test, may be used successfully for ICSI.不正确的染色方法和粗略的估计会低估畸形精子发生率。畸形精子症:正常人精子的畸形精子不会超过20%-40%;正常形态精子百分比小于30%为畸形精子症。129例190次精液受精能力评估结果:1%4%正常形态结构组、104个卵受精率为37%; 15%30%正常形态结构组、324个卵受精率为81%;31%45%正常形态结构组、309个卵受精率为82%;46%60%正常形态结构组、64个卵受精率为91%。结论:畸形精子
2、越多,受精率越低。畸形精子指数(TZI):每一缺陷精子发生不同畸形的概率。(=缺陷总数/缺陷精子数)1.6与未经治疗的不育夫妇低生育力有关。精子畸形指数(SDI):每一被检精子发生不同畸形的概率。(=缺陷总数/被检精子数)=1.6是体外受精失败的阈值。Conclusion(s): Successful IVF or history of fathering a child was associated with a more uniform sperm head area in semenand sperm preparation. (Fertil Sterilt 1998;70:88391. 1998 by American Society for Reproductive Medicine.)