DINAMICS OF BLOOD PRESSURE AND HEART RATE VARIABILITY PARAMETERS DURING BIOFEEDBACK IN LOOP OF HEART RATE VARIABILITY AND PACED BREATHING IN PATIENTS WITH DIFFICULT-TO-CONTROL ARTERIAL HYPERTENSION ON THE BACKGROUND OF DRUG

60 patients with difficult-to-control arterial hypertension (DTCAH) were examined (average age is 59.0 ± 9.4 years). The changes in blood pressure (BP) and parameters of heart rate variability (HRV) during biofeedback sessions (BFB) in loop of paced breathing (PB) in patients with DTCAH on the background of standard drug therapy were assessed. It has been established that the systematic sessions of BFB in loop of PB in patients with DTCAH allow to increase the total power of the HRV spectrum, VLF and HF, and also improve control of BP. BFB in loop of PB can be recommended as an adjunctive method to the standard drug therapy for patients with DTCAH.