[Adaptative resources of the main regulatory systems in patients with hypertension under the highland conditions].

Aim: To study characteristics of hemodynamics, spectral analysis of heart rate variability (HRV) and their association with the total blood concentration of stable metabolites of nitric oxide (nitrites and nitrates) in patients with hypertension living in highlands.

Patients And Methods: 110 natives of the highlands of Elbrus region were examined. All of them were divided into 2 groups--with 2d stage of hypertension (n = 50) and conditionally healthy (n = 60.

[System analysis of heart rate variability, hemodynamics and bioelectrical activity of the human brain at moderate altitudes].

Heart rate variability (HRV), hemodynamics, cerebral alpha-rhythm and systemic relations between them were investigated in 35 normal human subjects at the age of 37.2 +/- 3.8 years.

[Characteristics of endothelium hemodynamics and functional condition of hypertensive patients in high mountains].

Hemodynamics, geometry of the left myocardium ventricle (LV), blood nitrogen oxide and their interdependence were studied in hypertensive (n = 90) and normal mountain dwellers (n = 40) at the age of 37 to 72 years. The patients underwent general clinical and outpatient examination, electro- and echocardiography. The hypertensive patients were diagnosed for disorders in endothelium functioning, intracardiac hemodynamics, and LV geometry.

[The nitric oxide system in patients with arterial hypertension living in high mountains].

Aim: To estimate concentrations of stable metabolites of nitric oxide (NO)--nitrites and nitrates--in blood components of hypertensive patients living in high mountains.

Material And Methods: The study included 90 healthy subjects and 90 patients with hypertension of different severity and duration living in high mountain regions near Elbrus. The age of the patients varied from 37 to 78 years.