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Figure 3 A, Pulsed-Doppler tracing of LAA flow in AF. Note the rapid fibrillatory flow waves, which are of higher velocity during ventricular diastole than systole (arrows; see text for details). B, Pulsed-Doppler tracing of LAA flow in AFL (with a 2:1 ventricular response). Flutter flow waves are, in general, slower and of higher velocity than fibrillatory flow waves.
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