Dynamics of indicators of the acid-base state of the blood in different seasons

Abstract

At high latitudes, seasonal changes in the environment have a significant impact on the dynamics of physiological processes. The purpose of the study: to identify the content of carbon dioxide in the atmospheric air and the features of the acid-base state of the blood in different seasons of the year. Methods and scope of research. The surveyed contingent consisted of: group 1 - 58 healthy male students of a medical institute, aged 18-20 years, group 2 - young men, residents of rural areas, aged 17-19 years. The study of the parameters of the acid-base state of the blood was carried out according to standard methods in different seasons of the year. Results. It was found that the values of carbon dioxide tension in the capillary blood of the subjects are lower in winter, and the level of CO2 in the atmospheric air is lower in summer. At the same time, an inverse correlation was found between the values of CO2 voltage in capillary blood and the level of CO2 in the atmospheric air: the pair correlation coefficient was r=-0.4. In winter (December), when the level of CO2 in the atmospheric air is high, the CO2 tension in the capillary blood of those examined is lower than in summer (June), when the content of carbon dioxide in the atmospheric air falls. Regardless of the season, all the subjects showed a decrease in pH to the acid side, especially in winter. At the same time, there was a tendency to decrease the level of buffer bases, which indicates compensated gaseous acidosis. The conducted studies indicate the presence of a close relationship between the content of CO2 and the tension of this gas in capillary blood.