[The role of ergometric testing in diagnosis of latent long QT syndrome].

Abstract excerpt

BACKGROUND: The long QT syndrome is a genetically determined disease based on mutations of ion membrane channel genes. The resulting prolongation of repolarization increases a risk of malignant ventricular arrhythmias and sudden death. The diagnosis is problematic in individuals with borderline or even normal corrected QT interval value. Ventricular arrhythmias in this syndrome are often provoked by exercise,...

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