[Congenital long QT syndrome].

Abstract excerpt

The long QT syndrome is characterized by prolongation of the heart rate-corrected QT interval on the electrocardiogram and by the occurrence of life-threatening ventricular tachyarrhythmias of the torsade de pointes type. In most cases, the disorder becomes clinically manifest during childhood. Before these events, affected patients are typically considered healthy because no other symptoms occur. Sudden cardiac...

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