QT Prolongation in Postinfarction Patients and Sudden Death: Which Relationship?

  • X. Viñolas Prat
  • A. Bayés de Luna
Conference paper


The prognosis of postmyocardial infarction (post-MI) patients depends in particular upon the interaction between ischemia, left ventricular dysfunction, and electrical instability. The risk can be found in the center of an imaginary triangle formed by these three factors. These factors interact bidirectionally (Fig. 1), so that any of the apices affects the next directly or indirectly, and the modification of any one of these factors consequently alters the other two. Ischemia, therefore, affects left ventricular dysfunction either directly or indirectly through the electrical instability pathway and the sames happens with other two factors. We should also emphasize that the three angles of the triangle, electrical instability, left ventricular dysfunction, and ischemia, include different parameters as we can see in Fig 2. In Tables 1–3 we summarize the most important relationships between these three parameters.


Heart Rate Variability Sudden Death Ventricular Arrhythmia Autonomic Nervous System Ventricular Dysfunction 
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, Milano 1996

Authors and Affiliations

  • X. Viñolas Prat
    • 1
  • A. Bayés de Luna
    • 1
  1. 1.Cardiology DepartmentHospital de Sant PauBarcelonaSpain

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