ICD discrimination of SVT versus VT with 1:1 V-A conduction: A review of the literature

Rhanderson N. Cardoso, Chris Healy, Juan Viles-Gonzalez, James O. Coffey

Research output: Contribution to journalReview articlepeer-review

3 Scopus citations


Inappropriate ICD shocks are associated with increased mortality. They also impair patients' quality of life, increase hospitalizations, and raise health-care costs. Nearly 80% of inappropriate ICD shocks are caused by supraventricular tachycardia. Here we report the case of a patient who received a single-lead dual-chamber sensing ICD for primary prevention of sudden cardiac death and experienced inappropriate ICD shocks. V-A time, electrogram morphology, and response to antitachycardia pacing suggested atrioventricular nodal reentry tachycardia, which was confirmed in an electrophysiology study. Inspired by this case, we performed a literature review to discuss mechanisms for discrimination of supraventricular tachycardia with 1:1 A:V relationship from ventricular tachycardia with 1:1 retrograde conduction.

Original languageEnglish (US)
Pages (from-to)236-244
Number of pages9
JournalIndian Pacing and Electrophysiology Journal
Issue number5
StatePublished - Sep 1 2015
Externally publishedYes


  • Atrioventricular nodal reentrant tachycardia
  • Implantable cardioverter defibrillator
  • Inappropriate shock
  • Rhythm discrimination algorithms
  • Supraventricular tachycardia

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)


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