Clinical Usefulness of QT Prolongation, QT Dispersion and T-Wave Alternans

  • X. Viñolas
  • A. Cabrera
  • A. Bayés de Luna


The prognosis of postmyocardial infarction patients depends especially upon the interaction between ischemia, left ventricular dysfunction and electrical instability. Repolarization parameters (QT interval, QT dispersion and T-wave alternans analysis) are used for noninvasive evaluation of patients prone to ventricular arrhythmias after myocardial infarction. The publication of the results of the MADIT trial makes the development of new techniques for noninvasive risk stratification of arrhythmias even more important, because one of the major limitations to extrapolation of the results in daily clinical practice is the need for an invasive electrophysiological (EP) test to stratify the patients.


Ventricular Arrhythmia Malignant Ventricular Arrhythmia Complex Demodulation Postinfarction Patient Electrical Alternans 
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Copyright information

© Springer-Verlag Italia 1998

Authors and Affiliations

  • X. Viñolas
    • 1
  • A. Cabrera
    • 1
  • A. Bayés de Luna
    • 1
  1. 1.Departament de CardiologiaHospital de Sant PauBarcelonaSpain

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