Resumo

CARDONA, Esteban A et al. SIMPLE ABLATION PATTERNS FOR TERMINATING ROTORS IN CHRONIC ATRIAL FIBRILLATION. A SIMULATION STUDY. Rev. ing. biomed. [online]. 2014, vol.8, n.16, pp.20-25. ISSN 1909-9762.

Atrial fibrillation (AF) is the most common arrhythmia in clinical practice and the most consulted in medical services. Recently it has been proposed a mechanism for maintaining the AF, which consists in one or more rotors activating the tissue at high frequency. Ablation is one of the treatments for AF, for chronic AF is needed complex ablation patterns, so currently it has been looking for an ideal pattern with a minimum number of ablation lines. In this work activity of a rotor was simulated in a 2D model of human atrial tissue, under chronic AF conditions, and the center of rotation (tip) was located. Six different simple ablation patterns composed of a limited number of lines were proposed and evaluated. The study showed that those patterns that passed through or encloses the tip of the rotor and additionally were extended to a conduction boundary are effective in the termination of the rotor.

Palavras-chave : Ablation; Chronic atrial fibrillation; Rotor; Simulation.

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