男性配偶即使精子活力密度正常,只要精子低渗肿胀试验评分低于正常,夫妇的妊娠率极低。一些研究显示低渗肿胀试验评分低于正常而有正常的受精率也不能预测妊娠率。已经证实使用低渗肿胀试验评分低于50％的精液标本体外受精-胚胎移植(IVF-ET)的受精率和妊娠率不同。本研究的目的是为了证实临床妊娠采用单精注入卵母细胞 Even if male spouses have normal sperm motility density, as long as the sperm hypoosmotic swelling test score is lower than normal, the pregnancy rate of the couple is extremely low. Some studies have shown that hypoosmotic swelling test scores lower than normal and normal fertilization rate can not predict pregnancy rate. Fertilization and pregnancy rates for IVF-ET have been demonstrated to be less than 50% in hypoosmolar swollen test semen specimens. The purpose of this study was to confirm the clinical pregnancy using a single injection of oocytes