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Chest, Vol 71, 222-225, Copyright © 1977 by American College of Chest Physicians

ARTICLES

Paroxysmal supraventricular tachycardia with unusual induction. Concealed reentry or automaticity?

K Hiejima, S Satake, Y Sakamoto, F Suzuki and T Sano

In a patient with documented paroxysmal supraventricular tachycardia, earlier atrial extrastimuli consistently induced His-ventricle (H-V) block and "atrioventricular junctional" beats, which were always followed by an echo or paroxysmal supraventricular tachycardia. In "atrioventricular junctional" beats, a V wave was preceded by an H deflection with the same intervals as that of the sinus beat. As for the underlying mechanism of paroxysmal supraventricular tachycardia, two possibilities were considered: (1) concealed atrioventricular nodal reentry, and (2) "triggered automaticity."




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Copyright © 1977 by the American College of Chest Physicians.