[Epidemiology of the pregnant women risk groups according to Troszynski's criterion with special regard to risk factors of potentially environmental character].

THE AIM: To evaluate the occurrence of specific increased risk groups of pregnancies against a background of the environment contamination in Rybnik. Environmental pregnancy risk factors were particularly taken into consideration. METHODS: Pregnant women giving birth in the Obstetrical Department in Rybnik in the years 1986-2000. Were study subject. The occurrence of factors dependent on the environment was the object of the inquiry. RESULTS AND CONCLUSIONS: The concentration of chemical substances in Rybnik in the years 1988-2000 revealed a declining tendency. Uncomplicated pregnancies were noticed in 50% of the cases. There was no evident correlation between professional activity and the occurrence of increased risk groups.