title: [Change in the elastic-adhesive properties of the arteries and arterial pressure in hypertension at different periods of the day].
abstract: The 24-hour rhythm of values characterizing the elastic resistance of large arterial vessels and the arterial pressure was studied in 107 patients with hypertensive disease and in 79 normal persons by means of N.N. Savitsky's mechanocardiographic method. In healthy persons the hemodynamic values were marked by regular daily changes, while in those with hypertensive disease the daily rhythm of hemodynamics was considerably distorted, the degree and frequency of the disorder in the rhythm being dependent first and foremost on the severity of the disease. In patients with stage IB and stage IIA hypertensive disease a daily rhythm typical of a healthy person was retained, but the fluctuations in the values were of a higher level and range. The highest values of all indices were recorded in stages IIB and III and two variants of changes in the shape of the daily curve of arterial pressure and tone of arterial pressure were revealed; the first was characterized by the values being highest at night and in the early morning hours and lowest between 12 and 13 p.m., while the second, which was less frequent, corresponded to the shape of the daily curve peculiar to healthy persons.
mesh_terms: D000268:Adhesiveness; D000328:Adult; D000368:Aged; D001158:Arteries / Q000503:physiopathology*; D001794:Blood Pressure; D002940:Circadian Rhythm; D004548:Elasticity; D005260:Female; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D014655:Vascular Resistance
vernacular_title: Izmenenie uprugoviazkikh svoĭstv arterial'nykh sosudov i arterial'nogo davleniia u bol'nykh gipertonicheskoĭ bolezn'iu v raznoe vremia sutok.