INTERRELATION BETWEEN BIOELECTRICAL ACTIVITY OF THE BRAIN, SYMPATHETIC REGULATION OF THE CARDIAC RHYTHM AND HEMODYNAMICS IN PATIENTS WITH ARTERIAL HYPERTENSION LIVING IN A MIDALTITUDE REGION

Interrelation between amplitude and frequency of the α- and β- brain waves, heart rate variability (HRV) and hemodynamics was studied in 65 hypertensive patients (level 2) and compared to 75 healthy people. Methods of the investigations included EEG, 24-hour Holter monitoring, echo-cardiography, blood pressure measurement and HRV calculation. In patients, α and β parameters decreased by 27 to 35 %, respectively. In comparison to normal people, reductions of α and β amplitudes as well as powers made up 20%, 30 % and 16–45 %, respectively. Total HRV in patients decreased 60 %. Interrelations between the α- and β- waves, HRV and hemodynamics were numerous and multidirectional in patients, whereas in normal people they were weak or absent at all. The results evidence interrelations between the cerebral bioelectrical activity, sympathetic heart rate regulation and hemodynamics in hypertensive patients living in a midaltitude region.