The outcomes of labour and the body weight of newborns in women in Vorkuta

The main results of studies on birth outcomes and body weight of newborns in Vorkuta are summarized. On the basis of the developed electronic database the comparative analysis of the physiological characteristics of birth outcomes and neonatal indicators (body length, weight, Apgar score), depending on the seasonal dynamics of complex natural and climatic factors the impact of the health status of the mother (obstetric and somatic pathology) and her age on the performance of the newborn was assessed. In addition, given the significant variability of the studied parameters for over 20-year period of observations, the analysis of indicators according to the main historical periods was carried out.During the 20-year observation period, the share of premature and delayed births increased and the average birth weight decreased. In addition, the proportion of children with body weight of 4 kg or more decreased from 14.2 to 8.6 %. The characteristics of the mother (parity, age) were changing over time. We observed no differences in the proportion of stillbirths in comparison to the selected time periods in the study areas. The average number of births per year in the "Perestroika" period was twice higher than in subsequent years. In 1990- 1994 their number decreased to 982. The frequency of anemia and preeclampsia among pregnant women in Vorkuta was 3-6 times higher than in Syktyvkar. In 1980 - 1999, the greatest number of births was observed in September, which is 15% above the monthly average.In the future, the creation of the Republican Electronic Birth Register will allow performing the longterm monitoring of pregnancy outcomes and their determinants in the Northern territory (including the Republic of Komi).