[Left ventricular function in patients with ischemic heart disease at the moment of acute myocardial ischemia induced by transesophageal cardiac electrostimulation]. / Funktsional'noe sostoianie levogo zheludochka u bol'nykh ishemicheskoi bolezn'iu serdtsa v moment ostroi ishemii miokarda, indutsirovannoi chrespishchevodnoi élektrokardiostimuliatsiei.

Repeat transvenous multiphase left ventriculography was performed in 14 patients with coronary stenosis diagnosed by clinical and angiographic findings. The procedure was conducted before and in the course of transesophageal pacing. The latter provoked acute myocardial ischemia responsible for a wide range of left ventricular dysfunctions which are analyzed in the paper in terms of cardiomanometry parameters, cardiocycle energetic balance, diastolic function and local motions of the camera walls.

[The effect of intracoronary injections of x-ray contrast media on cardiac rhythm and conductivity during different variations of myocardial blood supply]. / Vliianie intrakoronarnykh in"ektsii rentgenokontrastnykh preparatov na ritm i provodimost' serdtsa pri razlichnykh variantakh krovosnabzheniia miokarda.

A study of the correlation between electrophysiologic effects of intracoronary injections of radiopaque agents and anatomical features of blood supply of cardiac conduction was carried out in 60 patients with intact coronary arteries. Coronary angiography was performed in all the patients. Disorders in cardiac conduction and repolarization in the myocardium were observed in intracoronary injection of radiopaque agents, which was accompanied by the development of S-A bradycardia. A bradyarrhythmic reaction type depends on prevalence of the left or right coronary artery in the atrial blood supply and cardiac conduction. The bradyarrhythmic effect was more pronounced in injection of a radiopaque agent in the right artery than in the left one.