Am J Cardiol. 2003 Sep 15;92(6):746-9.

Syncope in children and adolescents and the congenital long QT syndrome.

Khositseth A, Martinez MW, Driscoll DJ, Ackerman MJ.

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Department of Pediatric and Adolescent Medicine/Division of Pediatric Cardiology, Mayo Clinic and Foundation, Rochester, MN 55905, USA.

Abstract

From a population-based epidemiologic cohort of children and adolescents who sought medical attention for syncope (n = 151), screening 12-lead electrocardiograms were obtained from 118 patients (79 female) to determine the frequency of significant QT prolongation. The distribution of heart rate corrected QT intervals (QTc) was compared with age- and sex-matched controls. Only one patient had QTc >470 ms.

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Syncope in children and adolescents and the congenital long QT syndrome.

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