In conclusion, we found that in patients operated on for tetralogy of Fallot, signal-averaged electrocardiography is not useful for identifying patients at risk for severe ventricular arrhythmia, but the measurement of QT dispersion might be an appropriate noninvasive marker of electrical instability.
Clinical significance of high-frequency, low amplitude electrocardiographic signals and QT dispersion in patients operated on for tetralogy of Fallot.
DALIENTO, LUCIANO;BUJA, GIANFRANCO;MILANESI, ORNELLA;STELLIN, GIOVANNI;RIZZOLI, GIULIO
1995
Abstract
In conclusion, we found that in patients operated on for tetralogy of Fallot, signal-averaged electrocardiography is not useful for identifying patients at risk for severe ventricular arrhythmia, but the measurement of QT dispersion might be an appropriate noninvasive marker of electrical instability.
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