Study Evaluating GAP-486 in Non-sustained Ventricular Tachycardia

INCLUSION CRITERIA: * Male and female patients, 18 years of age or older, that have experienced an acute ischemic event within 24 hours prior to study entry. * Patients with a documented history of coronary artery disease or left ventricular dysfunction * Patients who have experienced an episode of non-sustained ventricular tachycardia within 24 hours of the index ischemic event EXCLUSION CRITERIA: * Patients who have had percutaneous coronary intervention (PCI), thrombolytics, or open-heart surgery within 48 hours prior to study entry, or who require it during test article administration * Patients who have taken another antiarrhythmic medication (other than a beta blocker) within 5 half-lives of the start of test article * Patients who have a history of torsades de pointes, long QT syndrome, QTc \> 0.50