The potassium and sodium ion channels defective in the long QT syndromes (LQTS) are
present in the atria as well as the ventricles, so atrial arrhythmias may be anticipated in …

Torsade de Pointes (TdP) is an atypical ventricular arrhythmias associated with the acquired
and congenital forms of the long QT syndrome. The substrate for the arrhythmia develops as …

A patient with long QT syndrome and syncope underwent electrophysiological testing and
recording of monophasic action potentials (MAP). Programmed ventricular stimulation using …

Torsade de pointes is a potentially life threatening form of polymorphic ventricular
tachycardia typically seen in the setting of congenital and acquired abnormal QT …

The aggregation of the defining electrocardiographic features of the long QT syndromes
occupied a decade of observations collected by various observers scattered around the …

Purpose: To review the current understanding of the mechanisms and treatment of the long
QT interval syndromes and torsade de pointes. Data Sources: Personal databases of the …

Since its initial description by Jervell and Lange‐Nielsen in 1957, the congenital long QT
syndrome (LQTS) has been the most investigated cardiac ion channelopathy. A prolonged …

Objectives: This study sought to identify electrocardiographic (ECG) criteria that are
associated with initiation of torsades de pointes (TdP) in patients with acquired (a-) and …

Torsade de pointes is a form of polymorphic ventricular tachycardia occurring in a setting of
prolonged QT interval on surface electrocardiogram. Congenital causes of prolonged QT …

The case of a 19-year-old girl who was treated since she was 11 years of age for what was
thought to be a seizure disorder is presented. Various anticonvulsants (carbamazepine …