Abstract
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 language | English (US) |
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Pages (from-to) | 236-244 |
Number of pages | 9 |
Journal | Indian Pacing and Electrophysiology Journal |
Volume | 15 |
Issue number | 5 |
DOIs | |
State | Published - Sep 1 2015 |
Externally published | Yes |
Keywords
- Atrioventricular nodal reentrant tachycardia
- Implantable cardioverter defibrillator
- Inappropriate shock
- Rhythm discrimination algorithms
- Supraventricular tachycardia
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Physiology (medical)