Successful catheter ablation of a ventricular tachycardia storm originating from the left ventricular posterior papillary muscle involved with a remote myocardial infarction.

Autor: Takumi Yamada, Paul Tabereaux, Harish Doppalapudi, H. McElderry, G. Kay
Zdroj: Journal of Interventional Cardiac Electrophysiology; Mar2009, Vol. 24 Issue 2, p143-145, 3p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
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