[Comparison Clinical Data and Results of Mathematical Modeling in Radiofrequency Ablation of Permanent Atrial Fibrillation: Cardioversion Might Be the Final Stage in the Combined Treatment].

to compare the theoretical possibility of permanent atrial fibrillation (AF) elimination (on the model of the 6-wave re-entry) result.

[Approximation of mathematical scanning simulation data and clinical results f radiofrequency ablation of perimitral atrial flutter. Condition of existence of perimitral atrial flutter].

Aim: 1) to create Perimitral Atrial Flutter (PMAFL) model and estimate theoretical probability of elimination of perimital reetntry using left atrial geometry two-dimensional mathematical modeling and ablative formatting; 2) to compare clinical results of PMAFL ablation by means of mitral vs inferioseptal isthmus ablation and mathematical modeling data.

Material And Methods: Clinical phase. Study was conducted on 24 pts (6 women, 57.

[Comparison of the effectiveness of pulmonary veins isolation vs linear radiofrequency ablation in paroxysmal atrial fibrillation patients using either mathematical scanning or clinical approach].

Aim: to compare clinical results of linear ablation vs. PVI approach in patients with paroxysmal AF and to estimate theoretical probability of 4-waves re-entry to eliminate as a results of the both ablative techniques formatting by means left atrial geometry two-dimensional mathematical modeling.

Material And Methods: Clinical phase.

[Control of the unified heart rhythm].

The problem of the control of cardiac rhythm has been considered in terms of the general theory of the synchronization of relaxation systems. The main pathways of the control of cardiac rhythm have been determined: (1) control with regard for the features of synchronization of relaxation systems during the formation of the unified heart rhythm due to the acceleration of the slow diastole depolarization phase; (2) control by gradual integral increase in the duration of the slow diastole depolarization phase; (3) subsequent synchronization of the rhythm as a delay of the slow diastole depolarization phase. Possible applications of the mathematical simulation methods to study the mutual synchronization during the formation of the unified heart rhythm and synchronization for the effective control of the formed unified rhythm of the sinoatial node are considered.

[About the formation of the uniform rhythm in the sinoatrial node of the heart].

Dynamic processes during the establishment of the uniform heart rhythm have been considered. It was shown that, during the establishment of the uniform rhythm as a result of mutual synchronization, the establishment of phase parities and a delay of excitation occur. The establishment of the uniform rhythm in a system of cooperating pacemakers of relaxation oscillators was studied on various mathematical models of the sinoatrial node.