[Diastolic relaxation disturbance and the compensatory role of the left atrium in hypertension].
The processes of contraction and relaxation of the myocardium, the compensatory role of the left auricle were studied by echocardiography in patients suffering from essential hypertension with varied intensity of myocardial hypertrophy of the left ventricle. 44 patients with essential hypertension and 10 healthy individuals were examined. The patients suffering from essential hypertension not attended by myocardial hypertrophy of the left ventricle show an increase in inotropism and in the extent of diastolic relaxation as compared to controls. A significant rise of the myocardial weight of the left ventricle entails a reduction in myocardial contractility and in the extent of diastolic relaxation. As hypertrophy of the left ventricle increases, the compensatory role of the left auricle rises, thus ensuring increased diastolic filling and maintenance of the left ventricular contractility.
D000222:Adaptation, Physiological; D000328:Adult; D006332:Cardiomegaly / Q000503:physiopathology; D003971:Diastole; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction
Narushenie diastolicheskogo rasslableniia i kompensatornaia rol' levogo predserdiia u bol'nykh gipertonicheskoĭ bolezn'iu.