[Peculiarities of cardiac activity in renal form of experimental hypertension with different hemodynamic characteristics].
The main haemodynamic indices were studied in rabbits of two age groups (young -- 10--12 month, and old -- 3--4 years) under normal conditions and those with experimentally induced renal hypertension. Significant changes were observed in the proportion of the main parameters of haemodynamics -- cardiac output per 1 min and total peripheral resistance -- in the presence of persistent arterial hypertension, which permitted to single out three haemodynamic forms of experimentally induced renal hypertension. The first and second haemodynamic forms are characterized by a sharp enhancement of the total peripheral resistance and diverse changes in the values of cardiac output per 1 min.: the third haemodynamic form is predmoninatly characterized by an elevation of the cardiac output. The compensatory hyper-function of the myocardium in the first and second forms of renal hypertension develops usually isometrically, in the third form -- according to the mixed variant.
D000367:Age Factors; D000818:Animals; D001011:Aorta / Q000503:physiopathology; D001794:Blood Pressure; D001810:Blood Volume; D002302:Cardiac Output; D006321:Heart / Q000503:physiopathology*; D006439:Hemodynamics; D006977:Hypertension, Renal / Q000503:physiopathology*; D011817:Rabbits; D014655:Vascular Resistance
Osobennosti serdechnoĭ deiatel'nosti pri pochechnoĭ forme eksperimental'noĭ gipertonii a raznoĭ gemodinamicheskoĭ kharakteristikoĭ