Response to atrial extrastimulus during supraventricular tachycardia: What is the mechanism?

Research output: Contribution to journalArticle


We describe a case illustrating the potential challenges in distinguishing AV nodal reentry tachycardia (AVNRT) from automatic junctional tachycardia (JT). While an early atrial extrastimulus advanced the next His and ventricular depolarization without tachycardia termination, suggesting JT, other features indicated the correct diagnosis of AVNRT. This teaching case demonstrates a novel exception to a recently reported diagnostic pacing maneuver and illustrates the importance of considering response to multiple maneuvers in reaching a diagnosis of SVT mechanism. (J Cardiovasc Electrophysiol, Vol. 24, pp. 359-363, March 2013)

Original languageEnglish (US)
Pages (from-to)359-363
Number of pages5
JournalJournal of Cardiovascular Electrophysiology
Issue number3
StatePublished - Mar 2013



  • AV node reentry
  • junctional tachycardia
  • pacing maneuvers
  • paroxysmal supraventricular tachycardia

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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