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Figure 1 Tree diagram showing the results for 653 stored spontaneous tachyarrhythmia episodes. DC group = dual-chamber supraventricular detection algorithm group; EGM = electrogram; pts = patients; SC group = single-chamber supraventricular detection algorithm group; SVT = supraventricular tachyarrhythmias; VT = ventricular tachycardia.
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