Article

Marked QT prolongation and ventricular tachycardia of a transient nature in young children with cardiomyopathy.

Department of Cardiology, Children's Hospital Boston, Boston, Massachusetts, USA.
Pacing and Clinical Electrophysiology (impact factor: 1.35). 05/2011; 35(8):e247-50. DOI:10.1111/j.1540-8159.2011.03126.x pp.e247-50
Source: PubMed

ABSTRACT Significant prolongation of the QT interval in pediatric patients with cardiomyopathy is rare. We report two cases of dilated myopathy with transient and dramatic QT prolongation. Both had associated ventricular arrhythmias, with one having torsade de pointes, and the other nonsustained ventricular tachycardia. Normalization of their QTc occurred as their ventricular function improved.

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Keywords

cardiomyopathy
 
dilated myopathy
 
dramatic QT prolongation
 
having torsade de pointes
 
pediatric patients
 
QT interval
 
QTc
 

Douglas Mah