Key result
QRS duration ≥180 ms strongly predicts life-threatening ventricular arrhythmias in repaired tetralogy of Fallot.
Why the study?
Chronic right ventricular volume overload after tetralogy of Fallot repair is related to diastolic function and QRS prolongation, with high risk of symptomatic arrhythmia when marked enlargement and QRS prolongation develop.
Does QRS duration on resting ECG predict life-threatening ventricular arrhythmias in patients after tetralogy of Fallot repair?
Does QRS duration on resting ECG predict life-threatening ventricular arrhythmias in patients after tetralogy of Fallot repair?
A QRS duration of ≥180 milliseconds is a highly sensitive predictor for life-threatening ventricular arrhythmias in patients after tetralogy of Fallot repair.
May inform arrhythmia surveillance in repaired tetralogy of Fallot; leaves open whether RV volume overload drives risk.
Chronic right ventricular volume overload after tetralogy of Fallot repair is related to diastolic function and correlated with QRS prolongation. The risk of symptomatic arrhythmia is high when marked right ventricular enlargement and QRS prolongation develop. A QRS duration on the resting ECG of > or = 180 milliseconds is the most sensitive predictor of life-threatening ventricular arrhythmias yet described.
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Gatzoulis et al. (1995) conducted a review in Tetralogy of Fallot. QRS duration ≥ 180 milliseconds was evaluated on Life-threatening ventricular arrhythmias. A QRS duration of ≥ 180 milliseconds on resting ECG is a highly sensitive predictor of life-threatening ventricular arrhythmias in patients with repaired tetralogy of Fallot.
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