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Spatial variability of ventricular activity intervals in normal subjects and old myocardial infarction patients

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3 Author(s)

Increased dispersion of QT interval in the 12-lead ECG have been proposed as risk factor of ventriculsr arrhythmias in post myocardial infarction (post-MI) patients, but its sensitivity and specifity is low for diagnosis and/or prognosis. We evaluate dispersion in other ventricular activity intervals, in order to determine whether they improve the separation between 15 normal subjects and 15 post-MI patients compared with QT dispersion. .U1 the interval ventricular activity dispersions measured in the Frank??s orthogonal leads (XYZ) are larger in post-MI patients than in normal subjects, but the differences are significant only for JTpeak (JTp) dispersion (p = 0.03). Therefore JTp dispersion could improve the identification of post-M1 paticnts with risk of ventricular arrhythmias.

Published in:

Electrical and Electronics Engineering, 2004. (ICEEE). 1st International Conference on

Date of Conference:

8-10 Sept. 2004