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      Paroxysmal Atrial Tachycardia with Second-Degree Atrioventricular Block

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          Abstract

          Paroxysmal atrial tachycardia with atrioventricular block usually indicates potentially dangerous overdigitalization, and serious heart disease is almost universally present. In this report, we describe a patient with a structurally normal heart who manifested spontaneously intra-atrial reentrant tachycardia with Wenckebach atrioventricular block in the absence of medications. In this patient, the longest atrial paced cycle length that induced atrioventricular nodal block was 390 ms, and the atrial cycle length during tachycardia ranged from 360 to 400 ms. The electrophysiologic study in our patient demonstrated that second-degree atrioventricular block during atrial tachycardia may occur in patients without structural heart diseases or taking any medication.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1997
          1997
          19 November 2008
          : 88
          : 5
          : 474-477
          Affiliations
          Section of Cardiology, Chang Gung Memorial Hospital, Kaohsiung, Taiwan,
          Article
          177379 Cardiology 1997;88:474–477
          10.1159/000177379
          9286511
          © 1997 S. Karger AG, Basel

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          Page count
          Pages: 4
          Categories
          Case Report

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