SUMMARY
The relative characteristic of orthostatic reactions (OR) of blood pressure (BP) and heart rate variability (HRV) in 90 patients at the age of 58±10 years with isolated and combined osteoarthritis (OA) and arterial hypertension (AH) is spent. ??, ?H and combined ??+?? are characterised by identical patterns in ?R a BP and measures of HRV, and also measures HRV in assay with breath modulation that testifies in favour of identical system neurohumoral mechanism of development ?? and ?H. Lower value ?? and higher LF/HF in groups of patients ??+?? against groups of patients with isolated ?? and ?H and their less awake reactions on orthostate and in assay with breath modulation, testify to more serious flow combined OA+AH in comparison with isolated ?? and ?H.