Long QT syndrome genotyping by electrocardiography: fact, fiction, or something in between?

Abstract excerpt

Diagnosis of long QT syndrome (LQTS) is difficult. A prolonged QT interval is easily overlooked, and in 10% of all patients with LQTS, the QT interval is normal. Genotyping is unfortunately not able to detect all patients and healthy subjects correctly. Although QT prolongation is the most used risk parameter, there is no clear correlation between the prolonged QT interval and the risk of arrhythmias in...

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