[Coronary collateral circulation in infarction-related artery in patients with acute myocardial infarction with rise and without rise of ST segment].

The authors analyzed a condition of coronary collateral circulation in infarction-related artery in patients with acute myocardial infarction with rise and without rise of ST segment. The assessment of collateral circulation was made by coronary angiography using Rentop scale. Results of the research showed, that collateral circulation wasn't visualized by angiography in the first hours after acute myocardial infarction with the rise of ST segment. Apparently, this circulation didn't significantly assisted in maintenance of vital capacity of the myocardium in the pool of infarction-related occlusive coronary artery. Visualization of collateral circulation was noted in majority of patients with acute myocardial infarction without the rise of ST segment. Collateral flow was an important alternative source of blood supply of the heart in patients without rise of ST segment in the period of critical reduction of the antegrade blood flow.

[Coronary microvascular obstruction phenomenon after endovascular recanalization in patients with chronic coronary occlusions].

The article analyzed no-reflow phenomenon after endovascular recanalization for chronic coronary occlusion. An assessment of antegrade blood flow was made while performing the coronary angiography according to TIMI classification. The Rentrop scale was used for evaluation of retrograde blood flow. The results of investigation showed, that the frequency of occurrence of no-reflow phenomenon after endovascular recanalization in the case of chronic coronary occlusion wasn't higher than 5%. The onset of no-reflow phenomenon after endovascular recanalization in chronic coronary occlusion doesn't depend on the volume of retrograde collateral filling of distal coronary bloodstream. A postponed restoration of antegrade blood flow was possible in patients with previously manifested (Rentrop II-III) retrograde collateral filling of periphery.

[Complications high frequency catheter destruction of heart conduction pathways]. / Oslozhneniia vysokochastotnoi kateternoi destruktsii provodiashchikh putei serdtsa.

An analysis of 490 operations in 442 patients with different variants of supraventricular and ventricular tachycardia was made. Complications developed in 23 cases (4.7%). The least (0.8%) risk of complications was noted in patients after destruction of the atrioventricular junction, the greatest (9.6%) in patients with abnormal junctions. Measures of treatment depended on the degree and severity of the complication and the character of concomitant disease. The division of complications into biogenic and technogenic allows the possible factors influencing their development to be differentiated. The frequency of complications is determined by complexity of the methods used and the necessary experience on the one hand, and by the severity of the patient's state and coexistent diseases on the other hand.

[Intracardiac hemodynamics after closure of atrial septal defects with the endovascular device, Amplatzer septal occluder]. / Vnutriserdechnaia gemodinamika posle zakrytiia defektov mezhpredserdnoi peregorodki éndovaskuliarnym ustroistvom Amplatzer septal occluder.

Changed size and forms of the right and left ventricles of the heart and intraventricular hemodynamics were studied in 5 patients after closing the defects of the interventricular septum with an intravascular device. It was found that after occlusion of the defects by the safe and atraumatic endovascular device the right ventricular myocardium of the heart relaxed, the stroke index became less, the ejection fraction became greater, the diastolic diameter of the right ventricle decreased, and of the left ventricle increased. The indices of the regional contraction function of the tri-cuspid and output sectors of the input part and external and pulmonary output sectors of the right ventricle were found to normalize.

[New methods in angiocardiographic diagnosis of arrhythmogenic dysplasia of the right ventricle]. / Novoe v angiokardiograficheskoi diagnostike aritmogennykh displazii pravogo zheludochka serdtsa.

Arrhythmogenic dysplasia of the right ventricle (ADRV) is a congenital pathology of the heart resulting in the appearance of ventricular tachycardia that considerably increases risk of sudden death in young people. Up to now, however, the diagnostic criteria of this pathology have not been completely developed. An original method was used to study specific features of the regional contractile function (RCF) of the right ventricle and its diagnostic potentials in ADRV. The regional contractility of one of the right ventricle sectors was proved to decrease more than twice which corresponds to localization of additional conductive ways detected during the endo-electrophysiological examination of the heart. Changed indices of RCF should be referred to "great" angiographic criteria of diagnostics of ADRV.

[Aortic valve prosthesis and the plication of a dissecting aneurysm of the ascending aorta in a patient with infectious endocarditis against a background of chronic kidney failure and its management by regular hemodialysis]. / Protezirovanie aortal'nogo klapana i plikatsiia rasslaivaiushchei anevrizmy voskhodiashchei aorty u bol'nogo infektsionnym éndokarditom na fone khronicheskoi pochechnoi nedostatochnosti i provedeniia reguliarnogo gemodializa.

Some literature data are presented on the problem of cardiac surgery in patients with chronic renal insufficiency under regular hemodialysis and on the specificity of performing operations on such patients under conditions of artificial circulation. The authors describe their first experience of a one-step prosthezing of the aortal valve and plication of the dissecting aneurysm of the ascending part of the aorta in the patient receiving the regular hemodialysis during 5 years as well as the positive results of this original operation in dynamics of the first year of observations.

[An accurate formula for assessing the volume of the right ventricular outflow tract]. / Utochnennaia formula dlia opredeleniia ob"ema vyvodnogo otdela pravogo zheludka,

Practical application of formulae for separate assessment of the volumes of inlet and outlet sections of the right ventricle derived previously by the authors has shown that the formula for right ventricular outlet section determining it as a curved truncated cone with nonparallel bases does not take into account a narrowing in the middle third of the outlet portion during the right ventricular systole and/or supraventricular crest hypertrophy. In the specified formula right ventricular outlet portion volume is determined as a sum of the volumes of two truncated cones with a borderline in the middle of the outlet portion long axis. The most reliable difference from the main formula was obtained in the control group where the borderline of outlet portion division coincided with the area of the maximal stenosis of outlet portion stenosis in the systole. In other groups (patients with some congenital heart diseases) the maximal stenosis zone is located lower. Hence, the specified formula helps reduce the overvaluing of the right ventricular outlet portion volume; to make the estimation more accurate, the borderline between the cones should be carried out at the site of this portion maximal stenosis.

[The regional contractile function of the normal right ventricle and in congenital heart defects]. / Regionarnaia sokratitel'naia funktsiia pravogo zheludochka v norme i pri nekotorykh vrozhdennykh porokakh serdtsa.

The authors have developed a method for studying the regional contractile function of the right ventricle (RV) performed by cineangiocardiogram in two projections. It allowed an analysis of the regional contractile function of the RV to be performed in patients with hypervolemic exercise of RV and hyperkinetic load to RV, and to compare them with normal conditions. It was established that the regional contractile function of the input and output parts are not equivalent and that there are reliable differences in changes of contractility of the output part of the RV in patients with stenosis of the pulmonary artery as compared with normal state.

[Cineangiographic diagnosis of an aneurysm of the membranous part of the heart septum]. / Kinoangiograficheskaia diagnostika anevrizmy membranoznoi chasti peregorodki serdtsa.

Altogether 20 patients with aneurysm of the cardiac membranous septum (AMS) were examined. Biplane cineangiocardiography (CACG) of the left ventricle was performed in the left oblique position permitting the detection of AMS in 17.8% of the patients with the suspected interventricular septal defect (IVSD). Heart diseases were observed in all the patients, in 90% they were accompanied by IVSD in the cardiac wall. AMS regular contours and a wide base were signs of true AMS. A narrow base and irregular shape were indicative of false AMS. Slight aortic transposition was noted in 1/4 of the patients with AMS.

[Determination of the input and output volume of the right ventricle based on cineangiocardiography data]. / Opredelenie ob'emov pritochnogo i vyvodnogo otdelov pravogo zheludochka po dannykm kinoangiokardiografii.

The authors have developed a method of separate determination of the volumes of the input and output portions of the right ventricle by findings of cineangiocardiography made in two projections. The volume of the input portion had been shown to be 1,23 times as great as that of the output portion. A comparison of measurements of the volumes of the input and output portions and the total right ventricle as a whole will reveal their participation in the compensation of congenital and acquired heart diseases.