Left: atrial activation in typical atrial flutter (AFL).

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Presentation transcript:

Left: atrial activation in typical atrial flutter (AFL). Left: atrial activation in typical atrial flutter (AFL). Right: activation in reverse typical AFL. The atria are represented schematically in a left anterior oblique view, from the tricuspid (left) and mitral rings. The endocardium is shaded and the openings of the superior (SVC) and inferior vena cava (IVC), coronary sinus (CS), and pulmonary veins (PV) are shown. The direction of activation is shown by arrows. Dashed areas mark approximate location of zones of slow conduction and block. Lettering on the right hand panel marks the low (LPS), mid (MPS), and high (HPS) posteroseptal wall, respectively. Modified after Cosío FG et al. J Cardiovasc Electrophysiol 1996;7:60–70. Albert L Waldo Heart 2000;84:227 Copyright © BMJ Publishing Group Ltd & British Cardiovascular Society. All rights reserved.