The patient underwent a comprehensive electrophysiologic study under conscious sedation
with and without isoproterenol administration. Bipolar intracardiac electrograms were …

We describe the case of a patient with long QT syndrome and recurrent ventricular
fibrillation, triggered by premature ventricular complexes (PVCs) with a left bundle branch …

Patients with long QT syndrome can sometimes present with a ventricular fibrillation (VF)
storm. Catheter ablation of culprit premature ventricular complexes responsible for the …

Diagnosing a congenital long QT syndrome (LQTS) is straightforward when a prolonged QT
is present in a patient with arrhythmia-related symptoms and documented torsade de …

Prolongation of the QT interval may be associated with a ventricular tachycardia (VT), which
may represent an acquired syndrome including a proarrhythmic drug effect. The cardiac …

Physicians will do practically anything to restore a near-normal heart rate in patients with
atrial fibrillation who constantly have rapid ventricular rates. This is because there is …

BACKGROUND: LQTS may cause sudden cardiac death (SCD), but the mechanisms linking
gene mutations to ventricular fibrillation (VF) are unclear. OBJECTIVE: To determine …

A 31-year-old woman with congenital long QT syndrome (LQTS) underwent dual-chamber
ICD implantation at 21 years of age for recurrent syncope. Her corrected QT interval (QTc) …

OBJECTIVES The purpose of this study was to investigate the electrophysiologic
mechanism (s) that underlie the transition of one or more short–long (SL) cardiac sequences …

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