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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

Abstract

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].

Keywords

Ventricular Tachycardia Catheter Ablation Guide Wire Pericardial Effusion Radio Frequency Pulse 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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