AVNRT historical perspective

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

In the past, many cases of AVNRT were referred to as paroxysmal atrial tachycardia, or PAT, or PAT with block. With greater understanding of the underlying electrophysiologic mechanism of these arrhythmias, more specific terminology has now been adapted, and these older non-specific terms are now used to refer to supraventricular tachycardia in general rather than AVNRT in specific.