Abstract
A 64-year-old man with a history of congestive heart failure secondary to nonischemic cardiomyopathy, mitral and aortic valve replacements, and biventricular cardioverter- defibrillator placement, developed a tachycardia. The tachycardia exhibited a biventricular paced rhythm with a short R-P interval and concentric atrial activation sequence within the coronary sinus, suggesting that the tachycardia might be a pacemaker-mediated tachycardia (PMT). However, the tachycardia was diagnosed as counterclockwise cavotricuspid isthmus (CTI)-dependent atrial flutter (AFL), and linear ablation of the CTI eliminated the tachycardia. This case illustrated that typical AFL can mimic a PMT when there is a severe conduction delay through the CTI.
Original language | English (US) |
---|---|
Pages (from-to) | 309-311 |
Number of pages | 3 |
Journal | Journal of Arrhythmia |
Volume | 34 |
Issue number | 3 |
DOIs | |
State | Published - Jun 1 2018 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2018 The Authors.
Keywords
- Catheter ablation
- Cavotricuspid isthmus
- Intra-atrial conduction delay
- Pacemaker-mediated tachycardia
- Typical atrial flutter