[Bicomponent analysis of the contractile capacity of the heart in ischemic lesions of the myocardium (experimento-clinical study)].

A study was made of cardiac pumping capacity in animals with local myocardial ischemia (9 experiments on cats), in 25 healthy persons and 21 patients suffering from coronary heart disease with stage I-IIA circulatory insufficiency using afterload characteristics (ALC). The latter reflected correlation between left ventricular pressure and aortic blood flow in constant blood filling and in a given inotropic heart condition. For combined assessment of ALC one should know its two parameters: power (maximum pressure in the zero blood flow) and rate (maximum blood flow rate in zero antipressure).

[Pharmacodynamic study of nitroglycerin preparations by methods of tetrapolar rheoplethysmography of the finger and impedance cardiography in ischemic heart disease].

A method of tetrapolar impedance plethysmography of the finger (TIPF) is suggested for the evaluation of the peripheral hemodynamic effect of drugs containing nitroglycerin. The method is based on the changes in the beta wave amplitude in TIPF as compared to the initial level. The central hemodynamics was studied by means of impedance cardiography (by the cardiac index) simultaneously with TIPF.

[Central hemodynamic indices studied by use of a tetrapolar variant of integral rheography of the human body].

Integral rheography is conducted by M. I. Tishchenko's method by means of bipolar rheographs which do not ensure accurate reading of the values which form the formula for determining the stroke volume.

[Use of Visken-15 for treating hypertension].

The hypotensive effect of visken-15, a blocking agent of the beta-adrenergic receptors, was studied in 7 patients with stage IB hypertensive disease, in 18 with stage IIA, and in 8 patients with stage IIB under conditions of in- and out-patient establishments. A favourable effect was produced in 81.5% of patients who were given one tablet of the drug once or twice a day.

[Comprehensive study of central and regional hemodynamics in hypertension using bloodless research methods].

Tetrapolar chest rheography is a convenient, noninvasive method for determining the stroke and minute blood volumes. Its application made it possible to reveal various types of hemodynamics in patients with hypertensive disease and apply differentiated treatment with due account for these peculiarities. Study of regional hemodynamics showed a significant increase in the tonus of the arteries of the brain and crura and diminished tonus of the veins.

[Determination of cardiac output by the method of tetrapolar chest rheography and evaluation of its metrological possibilities].

Tetrapolar chest rheography is an up-to-day, convenient and bloodless method of determining the cardiac stroke volume (CSV) and cardiac output (CO) in dynamic observations. The paper presents and analysis of the method and considers the possibilities and limits of its application in determining the stroke volume and cardiac output. Advantages of the Kubicek procedure as modified by the authors by comparison with other rheographic methods are shown, along with methodological procedures employed for dtermining the CSV and CO and a nomogram that significantly facilitates the calculation of the values under study is offered.

[Response to the orthostatic test in patients with macrofocal myocardial infarct under different tempo of activization].

In 68 patients with large-focal myocardial infarction subjected to different tempos of activization the orthostatic test was conducted while assuming the vertical position for the first time and prior to being discharged from the hospital. Orthostatic complications and changes in the terminal part of the ventricular complex on ECG were found to be much more frequent in cases of slow tempo activation. A qualitatively different response to the orthostatic test was revealed in myocardial infarction patients with or without circulatory insufficiency.

[Cerebral circulatory disorders in patients with cardiovascular diseases accompanied by cardiac rhythm disorders].

The authors examined 180 patients where disorders of cerebral circulation developed on the background of different disturbance of the heart rhythm. The patients suffered from rheumatic heart disease, hypertensive disease or atherosclerosis in concomitance with ischemic heart disease. For comparison, 100 patients with similar disorders were studied, but without disturbances of heart rhythm.

[Rheopulmonographic and pathomorphological parallels in congenital heart defects with increased blood circulation in the lungs].

A comparison of clinico-pulmonographic and morphological changes in the lesser circulation of 12 persons who died due to congenital heart failures involving an increased blood flow in the lungs revealed the presence of a correlation between these changes in the phases of compensation and decompensation.