[Changes in morphological picture of the semen in the group of men from infertile couples in the Lower Silesia in 1977-1993].

Objectives: To reveal the trends of the particular semen parameters changes during the 17 years period.

Design: Semen analysis results were retrospectively evaluated.

Materials And Methods: We have analysed semiograms from 618 men from infertile couples in 1977-1993. Regression analysis of the results from years of observation was performed.

Results And Conclusions: We showed the statistically important increase in the percentage of pathological sperms (R2 = 0.89, p < 0.0001), the slight increase in the semen volume (R2 = 0.30, p < 0.02). The total sperm count in the semen samples revealed a slight increase (R2 = 0.33, p < 0.02). The sperm concentrations and the percentage of the motile sperms remained relatively stable and relatively constant.