THE FUNCTION OF EXTERNAL RESPIRATION IN ADOLESCENT STUDENTS OF UNIVERSITIES IN TYUMEN DURING THE COVID-19 PANDEMIC FROM THE STANDPOINT OF CHRONOBIOLOGY

The indicators of a comprehensive examination of 36 patients of school age (7-18 years old) with severe concomitant traumatic brain injury (SCTBI) were studied.On day 1, the mesor of the circadian rhythm GPVR in groups 1 and 3 did not differ from the normative limits, while in group 2 an increase of 60% was noted.It was revealed that the GPVR values in children of the 3rd group were higher than in the 1st and 2nd groups to a greater extent during the day (at 8, 9, 11, 19, 20, 5, 6, 7 hours) than at night.The longest inversion of the circadian rhythm GPVR in the acute period of SCTBI was found in group 3. Hyperdynamic orientation of the adaptive restructuring of blood circulation was revealed in groups 1 and 3 of injured children older than 7 years.