Abstract
A 61-year-old man with a remote posterior myocardial infarction underwent electrophysiological testing for a ventricular tachycardia (VT) storm. Repeated cardioversions terminated the VT with immediate resumption after one sinus beat. Pacing neither terminated the VT nor demonstrated transient entrainment. Echocardiographically guided electroanatomic mapping revealed a centrifugal activation from the septal mid-apical region of the left ventricle on the septal portion of the posterior papillary muscle where a high frequency potential was observed within the local ventricular electrogram. Irrigated radiofrequency current at this site eliminated the VT. This case suggested that papillary muscles may be a target for catheter ablation of electrical storms after myocardial infarctions.
Original language | English (US) |
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Pages (from-to) | 143-145 |
Number of pages | 3 |
Journal | Journal of Interventional Cardiac Electrophysiology |
Volume | 24 |
Issue number | 2 |
DOIs | |
State | Published - Mar 2009 |
Externally published | Yes |
Keywords
- Electrical storm
- Myocardial infarction
- Posterior papillary muscle
- Radiofrequency catheter ablation
- Ventricular tachycardia