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Figure 2 Sterile Pericarditis Model of Atrial Flutter
Activation maps of the atrial epicardium (left) and atrial septum (right) during sustained atrial flutter in the canine sterile pericarditis model due to a single re-entrant circuit (top panel) and figure-of-8 re-entry (bottom panel). Blue and orange arrows indicate the re-entrant circuit, gray arrows indicate daughter wave fronts generated by the re-entrant circuit, isochrones are at 10-ms intervals, dashed black line indicates line of functional block, and blue asterisks indicate epicardial breakthrough of septal activation and site of entry from epicardium to atrial septum. Numbers equal activation time in milliseconds. Letters A to H are sites from which selected bipolar atrial electrograms were exhibited in the originally published figure. LAA, left atrial appendage; RAA, right atrial appendage; other abbreviations as in Figure 1. Modified, with permission, from Uno et al. (15).
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