Abstract
The cycles were divided into the following five groups (100-500, 500-1,000, 1,000-1,500, 1,500-2,000, ≥2,000 × 104/ml) by the concentration of motile sperm and compared the rates of normal fertilization and cycle from which normal fertilization was not obtained. In motile sperm concentration from 100 to <500 × 104/ml, the normal fertilization rate was significantly lower (48.8%) than other groups. The accordance with the aging and declining sperm counts, the normal fertilization rate has declined and ration of the cycle, which could not obtain normal fertilization has risen. This study suggested that the cycle in motile sperm concentration from 100 to <500 × 104/ml is not be suitable for IVF. Moreover, the cycle in motile sperm concentration from 500 to <1,000 × 104/ml, we have to consider the number of oocyte, female age and number of treatment cycle.
