[Comparative evaluation of efficacy of intracoronary shunts in minimally invasive myocardial revascularization].

Intracoronary shunts (IS) are devices for maintaining distal coronary blood flow when placing anastomoses with coronary arteries. The use of IS ensures functional and electrical stability of myocardium during its revascularization on the working heart. There are reports of endothelial damage by IS leading to dysfunction of coronary shunts.

[Possible complications of catheter ablation of atrial fibrillation].

Atrial fibrillation (AF) is the commonest form of disturbed cardiac rhythm. Hundreds of thousands of AF ablations are annually performed worldwide using different energy sources. One of the most popular methods is radiofrequency catheter ablation (RFA).

[The history of Wolf-Parkinson-White syndrome and evolution of surgical methods for its management].

Wolf-Parkinson-White syndrome (WPW syndrome) affects roughly 1% of the population. It usually occurs in subjects with normal heart function but may combine with congenital cardiac failure and cardiomyopathy. Paroxysmal tachycardia is recorded in 40-80% of he WPW patients, largely in the form of reciprocal tachycardia related to circulation of excitation in the atrioventricular junction and Kent's bundle.