[The diagnostically significant indices of the corrected axial ECG system in the differentiation of ischemic heart disease and dilated cardiomyopathy].

The common uniformity of electrocardiographic changes in coronary heart disease (CHD) and dilated cardiomyopathy (DCMP) in the lead XII, namely low QRS complex voltage, T-wave inversion, cardiac arrhythmias, atrioventricular and intraventricular conduction disturbances, served as the basis for searching for individual or combined lesion signs quantitatively diagnostically significant for CHD and DCMP. For this purpose, 217 patients were examined. Out of them 83 were included into a group of healthy persons and 134 were patients who were divided into two groups: 60 with chronic CHD and 74 with DCMP.

[The effect of industrial factors on specific functions and the course of pregnancy and labor in workers of the Orgsintez Manufacturing Association].

Women engaged in the production of chlorine, divinyl and propylene oxide are exposed during the working shift to unfavourable occupational factors: gas, dust, noise, emotional and physical stress, inadequate microclimate. All that disorders the specific functions and health status. Diseases in women working for 'Orgsintez' enterprise are closely connected with the length of service.

Some peculiarities of the physiological validity of shift work schedules for the crews of floating oil drilling platforms.

Observations of the physiological status changes in the crews of floating oil drilling platforms during 7-day and 15-day shifts revealed that in subjects working the two shift schedules, the pattern of changes in the parameters of the central nervous system, circulation, muscle strength and endurance during the first 7 days corresponded to a physiological response to experienced challenge. In those working a 15-day schedule, the differences between the current and original status of the investigated physiological functions started to increase from day nine onwards, reaching a maximum on day fifteen. The alterations were most pronounced in subjects exposed predominantly to psychoemotional challenges during their labour.

[Indices of left ventricular hypertrophy based on data from the automatic mapping of 35 ECG leads].

The potential of the method of 35 ECG leads' automatic mapping in the diagnosis of left ventricular hypertrophy was assessed for the first time. A number of mapping indices closely correlating with the myocardial mass and the thickness of the left ventricular wall were found while studying 35 ECG leads' maps followed by computer processing, in 28 hypertensive patients and 6 normal subjects the hypertrophy degree of the left ventricle being determined by echocardiography and X-rays. The index of the total maximum of the R-waves among 7 vertical columns (7.

[Cardiac functional state in arterial hypertension].

The results of studies of the function of the heart in 592 patients with hypertensive disease are reported. In 120 cases it was established that a dependence exists between the cardiac pains and the level of the diastolic arterial pressure, minute volume and the mass of the left ventricle (r = +0.822; p less than 0.

[Correlation of the quantitative ECG and echocardiogram indices in left ventricular hypertrophy according to correlational analysis data].

In 47 patients with arterial hypertension and clinicoroentgenological signs of hypertrophy of the left ventricle the echo- and electrocardiographic study (the McFee-Parungao system) was carried out. Highly significant (p less than 0.001) direct correlation was revealed between the index of the corrected ECG, such as sigma R x,y,z + + sigma S x,y,z and Rx + Sz with echocardiographic indices of mass r = +0.