Color Atlas and Synopsis of Electrophysiology by Daoud Emile & Kalbfleisch Steven

Author:Daoud, Emile & Kalbfleisch, Steven
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2015-04-20T16:00:00+00:00

FIGURE 39-6 More rapid atrial fibrillation cycle length (on left side of electrogram tracing) slows (longer cycle length and more organized AF tracing on right side of electrogram tracing) during RF ablation of a left atrial rotor.

FIGURE 39-7 Termination of atrial fibrillation during application of radiofrequency energy at a rotor site identified by processing of AF electrograms recorded from the 64-basket electrode.

EPIDEMIOLOGY AND PATHOPHYSIOLOGY

AF is the most common human arrhythmia and is characterized by chaotic contraction of the atrium. Mechanisms of AF can be divided into the mechanisms of initiation and mechanisms of perpetuation of arrhythmia. There are three widely held theories on the mechanisms of AF perpetuation: multiple random propagating wavelets, focal electrical discharges, and localized reentrant activity with fibrillatory conduction.

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