| Autor: |
Cardoso RN; Cardiovascular Division, Department of Medicine, University of Miami, Miller School of Medicine, Miami, USA., Healy C; Cardiovascular Division, Department of Medicine, University of Miami, Miller School of Medicine, Miami, USA., Viles-Gonzalez J; Cardiovascular Division, Department of Medicine, University of Miami, Miller School of Medicine, Miami, USA., Coffey JO; Cardiovascular Division, Department of Medicine, University of Miami, Miller School of Medicine, Miami, USA. |
| Abstrakt: |
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. |
