[The occurrence of congenital abnormalities in children under 2 years of age in Zielona Gora province between 1987-1992].

The analysis encompassed 1278 children under 2 years of age with congenital abnormalities from a group of 60, 815 live-born neonates in Zielona Góra province between 1987-1992. The population prevalence of congenital abnormalities was 2.10% on average. Cardiovascular system abnormalities were the most frequent, making up 40.53% of all detected abnormalities and 0.85% of the analyzed population. The successive positions were abnormalities of: the limbs (15.41% of all detected abnormalities and 0.31% of the analyzed population), genitourinary system (9.08% and 0.19% respectively), central nervous system (7.51% i 0.16%) and digestive system (6.57% and 0.14). There were no statistically significant differences between sexes, towns and villages, jobs of mothers and months of birth. Congenital abnormalities were twice as frequent (4.83%) in low-birth-weight neonates. Deaths caused by congenital abnormalities made 30.9% of total infantile mortality. 66% of children with congenital abnormalities (mainly heart defects) died in first month of life.