Must have no congenital heart disease
Patients with congenital long QT syndrome, history of ventricular arrhythmias or heart block
Patients with congenital long QT syndrome
Congenital long QT syndrome
History of congenital long QT syndrome or torsades de pointes
Congenital long QT syndrome
Patients with congestive heart failure, congenital long QT syndrome; bradyarrhythmias, drugs known to prolong the QT interval
Absence of history of congenital long QT syndrome
Long QT syndrome or family history of idiopathic sudden death or congenital long QT syndrome.
Congenital long QT syndrome or family history of unexpected sudden cardiac death
Any history of congenital long QT syndrome
Known congenital long QT syndrome
History of congenital long QT syndrome or torsades de pointes
Congenital long QT syndrome
Diagnosed congenital long QT syndrome
Clinically significant electrocardiogram (ECG) changes at enrollment which obscure the ability to assess the PR, QT, and QRS interval; congenital long QT syndrome.
History of congenital long QT syndrome
History of congenital long QT syndrome
Congenital long QT syndrome
Known family history of congenital long QT syndrome.
Patients with congenital long QT syndrome
Diagnosed congenital long QT syndrome
Congenital long QT syndrome
QTcF >470 msec on screening ECG or congenital long QT syndrome
History of congenital long QT syndrome or torsades de pointes
Congenital long QT syndrome or history of torsades de pointes
Clinically significant cardiac arrhythmias, prolonged QT interval, congenital long QT syndrome
Congenital long QT syndrome
Patients with congenital long QT syndrome are excluded
Congenital long QT syndrome or family history of long QT syndrome
Long QT syndrome or family history of idiopathic sudden death or congenital long QT syndrome, and etc.
Congenital long QT syndrome.
Long QT syndrome or family history of idiopathic sudden death or congenital long QT syndrome, or any of the following:
Congenital long QT syndrome or taking drugs known to prolong the QT interval
Diagnosed or suspected congenital long QT syndrome
QTcF >470 msec on screening ECG or congenital long QT syndrome
Diagnosed or suspected congenital long QT syndrome
Congenital long QT syndrome
Diagnosed or suspected congenital long QT syndrome.
Resting heart rate <50 bpm or > 90 bpm Long QT syndrome or family history of idiopathic sudden death or congenital long QT syndrome, or any of the following:
Patients with congenital long QT syndrome are excluded from this study
Diagnosed or suspected congenital long QT syndrome
Patients with a family history of congenital long QT syndrome
Congenital long QT syndrome or a known family history of long QT syndrome
Patients with congenital long QT syndrome
Diagnosed congenital long QT syndrome
Congenital long QT syndrome
Patients with QTcF >470 msec at screening ECG or congenital long QT syndrome
QTcF >480 msec on screening ECG or congenital long QT syndrome
Congenital long QT syndrome.
Patients with congenital long QT syndrome
Congenital long QT syndrome, congestive heart failure, or bradyarrhythmia
Patients with congenital prolonged QT syndrome
Congenital long QT syndrome
Congenital long QT syndrome
History of congenital long QT syndrome or congenital short QT syndrome
Congenital long QT syndrome
Congenital long QT syndrome or family history of unexpected sudden cardiac death.
Clinically significant ECG changes which obscure the ability to assess the PR, QT, and QRS interval; congenital long QT syndrome
Diagnosed or suspected congenital long QT syndrome
Congenital long QT syndrome or family history of unexpected sudden cardiac death
History of congenital long QT syndrome or QTc > 450 ms
Diagnosed or suspected congenital long QT syndrome;
Patients with congenital long QT syndrome
Congenital long QT syndrome or a known family history of long QT syndrome