WELCOME TO THE INTERNATIONAL HEART RHYTHM FORUM: This forum is for questions about Arrhythmias, Causes, Complications, Diagnosis, Drugs-Medications, Electrophysiology-EPS, Flutter-Fibrillation, Investigational Treatments, Living with Issues, Maze Procedure, Premature Ventricular Contractions (PVC), Premature Atrial Contractions (PAC), Prognosis, Research, Tachycardia, Treatment-Therapy.