Transthoracic Epicardial Mapping and Ablation of Post-Infarction Ventricular Tachycardia: The Right Solution to the Problem?

  • E. Sosa
  • M. Scanavacca
  • A. D’Avila
Conference paper


The majority of sustained ventricular tachycardias after myocardial infarction (post-MI VT) are believed to originate from a reentrant circuit located at the subendocardium [1, 2]. Nevertheless, the functional role of the epicardium in maintaining some reentrant circuits has been well established, and data obtained from intraoperative mapping suggest that epicardial circuits are more common in post-inferior-wall MI [3, 4]. In these circumstances, conventional endocardial pulses of radiofrequency energy may be less effective [5]. Accordingly, subepicardial target sites have been pointed to as one of the reasons for unsuccessful use of catheter ablation to treat patients with VT [6].


Ventricular Tachycardia Catheter Ablation Guide Wire Pericardial Effusion Radio Frequency Pulse 
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Copyright information

© Springer-Verlag Italia 2000

Authors and Affiliations

  • E. Sosa
    • 1
  • M. Scanavacca
    • 1
  • A. D’Avila
    • 1
  1. 1.Heart Institute (InCor)University of São Paulo Medical SchoolSão PauloBrazil

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