The purpose of this study was to investigate the electrophysiologic mechanism(s) that underlie the transition of one or more short-long (S-L) cardiac sequences to ventricular tachyarrhythmias (VTs) in the long QT syndrome.
Department of Medicine, State University of New York Health Science Center and Veterans Affairs Medical Center, Brooklyn 11203, USA. el-sherif.nabil@brooklyn.va.gov