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Analysis of in dicators of body’s gas exchange in high-altitude flight based on a static model of the respiratory system

The purpose of the research was to analyze the dynamics of indicators of human gas exchange in high-altitude flight on the basis of a static model of the respiratory system of the body. First, we developed the structure of this model and an algorithm for calculating the gas exchange of the body. Next, we analyzed changes in indicators of the function of external respiration and gas exchange, and clarified the quantitative parameters that determine the nature of the relationships between the components of gas exchange. Finally, we carried out a computational experiment to simulate ascent to a height. The results of the analysis of the calculations showed that when a person rises to a height with a drop in pressure, tidal volumes change the volume of the alveolar space decreases and the dead space increases in the ratio from 4.7 to 0.7. An uncompensated respiratory alkalosis develops, leading to a violation of the acid-base reactions of the body.