INDICATORS OF CENTRAL HEMODYNAMICS IN STUDENTS DEPENDING ON ACTIVATION OF THE SYMPATHETIC NERVOUS SYSTEM
The purpose of the research is to study the characteristics of Central hemodynamics in students, depending on the activity of the sympathetic nervous system. Indicators of systemic hemodynamics have been evaluated in 27 junior students (the average age is 20,0 ±0,15 years). The indicators include arterial hypertension (AH), stroke volume (SV), peripheral vascular resistance (PVR), cardiac index (CI) and others. The integral indices of Central hemodynamics are estimated depending on the activity of the sympathetic nervous system on the basis of the calculated Kerdo index. It has been stated that the majority of indicators of central hemodynamics significantly depend on the degree of activation of the sympathetic part of the autonomic nervous system (ANS). Significant peculiarities of cor- relative interrelationships between parameters of central hemodynamics depending on Kerdo index (KI) have been revealed. The role of total peripheral vascular resistance in the regulation of hemodynamics in the predominance of the sympathetic ANS is shown, as indicated by a strong negative relationship between the APS and the cardiac index (r=-0.89, r=-0.75;p<0.05). The decrease in stroke volume (less than the proper values) is compensated by vasoconstriction of the peripheral vessels.