[Electrocardiogram changes in hypertrophic cardiomyopathy]. / Izmeneniia élektrokardiogrammy pri gipertroficheskoi kardiomiopatii.

Eight versions of ECG alterations were identified in 84 patients with hypertrophic cardiomyopathy (HCMP). As for the most prevalent version (60.7 percent of the cases), the pathological Q waves or QS were recorded in the presence of the voltage signs of ventricular hypertrophy or without such signs. The use of ultrasound cardiography and roentgenocardiography made it possible to distinguish 3 groups of patients with different myocardial hypertrophy. The first group included 20 patients with isolated hypertrophy of the interventricular septum (IVS), the second group 40 patients with IVS and left ventricle hypertrophy, and the third group included 24 cases of IVS hypertrophy and combined hypertrophy of the ventricles. The main features of ECG alterations were determined in accordance with the types of hypertrophy under consideration. In the first group, Q waves were mainly recorded (in 71.4 percent of the cases). In the second group, the signs of left ventricle hypertrophy were recorded in 50 percent of the cases while Q/QS in 62.5 percent of the cases. In the third group, the voltage signs of ventricular hypertrophy were observed in 62.5 percent of the cases, whereas the Q and QS were recordable less commonly (in 41.7 percent of the cases).

[Automated selection of optimal parameters of precordial mapping in the diagnosis of right-ventricular hypertrophy]. / Avtomatizirovannyi vybor optimal'nykh parametrov prekordial'noi karty dlia diagnostiki gipertrofil pravogo zheludochka.

New diagnostic parameters, improving the specificity and sensitivity of electrocardiographic diagnosis of right-ventricular hypertrophy, have been identified on the basis of an automated analysis of precordial maps in 56 patients with isolated right-ventricular hypertrophy and 71 normal subjects.

[Cartogram of 35 ECG leads in hypertrophy of the right ventricle of the heart]. / Kartogramma 35 otvedenii EKG pri gipertrofii pravogo zheludochka serdtsa.

Automatedly-reproduced cartograms of 35 electrocardiographic leads in 27 cases of isolated right-ventricular hypertrophy (RVH) were analysed in relation to the latter's roentgenocardiometric markedness, and the obtained results were substantiated in terms of spacial vectorcardiography. A direct correlation was established between cartographic and roentgenocardiometric data in cases of moderate RVH that was absent in marked RVH. The correlation between cartographic and vectorcardiographic parameters was, on the contrary, only slightly expressed in moderate RVH and high in marked RVH cases. These results can be attributed to specific anatomical structure of the hypertrophic myocardium at different stages of RVH formation, with either the outflow-pathway hypertrophy proper prevailing at early stages of hypertrophic development, or the right-ventricular free wall hypertrophy prevailing at later stages which result in irregular thickening of individual compartments and distortion of cavity size characteristics and geometrical properties of the right ventricle proper, as well as the displacement of the center of gravity and heart rotation round its own axes.

[Roentgenologic evaluation of myocardial contractility in heart valve diseases]. / Rentgenologicheskaia otsenka sokratitel'noi funktsii miokarda pri klapannykh porokakh serdtsa.

The authors compare the roentgenological findings with the parameters of contractility obtained during heart catheterization in 49 patients with mitral valvular disease and aortal valvular disease. The parameters are shown to be correlated with regard to the nature of valvular damage, characteristics of the impairment of the intracardiac hemodynamics and myocardial contractile function. Certain tendencies of this dependence are tabulated.

[Spatial characteristics of the P loop in normal subjects and in patients with an enlarged right atrium]. / Prostranstvennye kharakteristiki petli P v norme i pri uvelichenii pravogo predserdiia.

The studies performed have shown that: 1) using automatic reproduction of 10-20-fold magnified images of P-loop it is possible to learn its configuration, duration, recording direction, position and orientation of its moment vectors; 2) using digital computer list output of curves it is possible to determine numerical values of PXYZ-loop parameters and its vector and scalar characteristics; 3) for the diagnosis of right atrial dilatation (RAD) the assessment of vector values is more important than their orientation by azimuth and elevation angles; 4) the increase beyond normal (M + 2 sigma) of space vector values of PXYZ-loop - P0.25 greater than 0.16 mV, -Pmax greater than 0.22 mV and SP area greater than or equal to 0.03 mV.mV (3 mm2) reflects the initial stage of RAD; 5) changes of normal initial/final vector ratio (-P0,025 greater than or equal to -P0,075 - in normal subjects and P0,075 greater than or equal to P0,025 in patients with RAD) indicate the advanced stage of RAD.

[Roentgencardiometry and prognosis in myocardial infarct (clinical and roentgenological correlations)]. / Rentgenokardiometriia i prognoz u bol'nykh infarktom miokarda (kliniko-rentgenologicheskie sopostavleniia).

Primary roentgenocardiographic findings (within the first two days of infarction) were correlated with the assessment of improvement in patients' condition at the post-hospital rehabilitation stage (2 years' follow-up). A relationship between the category of severity of the patient's condition at the acute stage of infarction, its long-term improvement and the initial size of the heart was demonstrated. It is suggested that roentgenocardiometric data can provide an essential addition to the criteria of clinical and occupational prognosis in myocardial infarction patients.

[Comparative characteristics of the physical, x-ray and hemodynamic data in assessing heart failure in myocardial infarct]. / Sravnitel'naia kharakteristika fizikal'nykh, rentgenologicheskikh i gemodinamicheskikh dannykh pri otsenke serdechnoi nedostatochnosti u bol'nykh infarktom miokarda.

The physical and X-ray findings in 103 patients with acute myocardial infarction were compared with the value of left-ventricular filling pressure (LVFP). The LVFP was determined from the level of end diastolic pressure in the pulmonary artery determined by means of a balloon catheter. On the whole, the congruence was revealed between the X-ray findings and the LVFP. A still more definite picture may be obtained of the LVFP value if the results of physical examination are considered in addition to the X-ray data. At the same time, a disparity arises in some cases between the information obtained by means of catheterization of the pulmonary artery on the one hand and the physical and X-ray methods on the other. This must be borne in mind in applying intensive therapeutic measures, e. g. in cases with acute left-ventricular insufficiency, because erroneous therapeutic tactics may be chosen due to "post-therapeutic delay" of the physical and X-ray symptoms.

[X-ray angiocardiographic characteristics of the heart in arterial hypertension]. / Rentgenoangiokardiograficheskaia kharakteristika serdtsa pri arterial'noi gipertonii.

Correlation-statistical analysis of the roentgenocardiometric indices and the findings of left ventriculography in 30 patients with arterial hypertension was conducted. A significant inter-relationship of the roentgenometrical criteria of enlargement of the heart (cardiothoracic index, the extent of convexity of the arch of the pulmonary artery and, to a lesser measure, the cardiac volume) with the mass of the myocardium and the thickness of the left ventricular wall was revealed. The roentgenological criteria may complement the existing methods of the assessment of the degree of myocardial hypertrophy in arterial hypertension.

[Evaluation of myocardial contractile function in chronic postinfarct cardiac aneurysm]. / K otsenke sokratitel'noi funktsii miokarda u bol'nykh s khronicheskoi postinfarktnoi anevrizmoi serdtsa.

The ventriculograms of patients with chronic postinfarction aneurysm of the heart were studied with the use of separate analysis of the contraction indices of the functioning and non-functioning parts of the left ventricular myocardium. Relatively high indices of the ejection fraction of the functioning part of the myocardium with low indices of the total ejection fraction were noted. A correlative dependence was found between the total ejection fraction and the ratio of the volumes of the nonfunctioning part of the myocardium during systole and diastole to the total volume of the left ventricle during the same phases, which is evidence that these indices are important in appraising myocardial contractile function in aneurysm of the heart.