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A stable rhythm of very short cycle length (CL) in the left atrium (LA) can cause fibrillatory conduction, particularly in the right atrium (RA). Fast Fourier transform (FFT) analysis reliably identifies LA to RA conduction path(s) during atrial fibrillation (AF). We tested the hypotheses that FFT analysis of atrial electrograms (AEGs) during AF simulation will reliably identify the critical LA driver...
Background: During atrial flutter (AFI) in humans, reentrant activation usually travels either up the atrial septum and down the right atrial free wall (typical AFI) or vice versa (atypical AFI). Recent mapping of AFI in humans demonstrated a line of block along the crista terminalis (CT). This line of block was thought to be anatomic (fixed).Methods: The canine heart is a model that is extensively...
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