The book comprises the proceedings of the 5th International Workshop on Cardiac arrhythmias, held in Venice, October 7-10,1997 and represents an update on the most recent advances in the diagnosis, prognosis and treatment of cardiac arrhythmias.The book comprises the proceedings of the 5th International Workshop on Cardiac arrhythmias, held in Venice, October 7-10,1997 and represents an update on the most recent advances in the diagnosis, prognosis and treatment of cardiac arrhythmias.Atrial Fibrillation: Mechanisms and Clinical Aspects.- What Are the Electrophysiological Mechanisms of Perpetuation of Atrial Fibrillation?.- Vagal Tone: How Important Is It in Triggering Atrial Fibrillation?.- Tachycardia Induced Atrial Fibrillation: What Incidence? How to Diagnose and Treat It?.- Atrial Fibrillation: Cardioversion and Drug Prophylaxis.- Restoration of Sinus Rhythm: Pharmacological or Electrical?.- Atrial Fibrillation: Which Drug to Prefer for Acute Cardioversion?.- Drug Prevention of Paroxysmal Atrial Fibrillation, When and How?.- Antiarrhythmic Drug Administration before Electrical Cardioversion of Atrial Fibrillation: Is It Useful to Prevent Early Arrhythmia Recurrence?.- Atrial Fibrillation: Ablation Procedures.- AV-Nodal Ablation versus AV-Nodal Modification for Control of Atrial Fibrillation.- AV Junction Modification for Atrial Fibrillation: Which End Points?.- Heart Failure Patients with Atrial Fibrillation: How Important Is It to Regularize Ventricular Rhythm?.- Catheter Ablation of Atrial Fibrillation: Where Are We Now and Where Are We Going?.- Atrial Fibrillation: Internal Defibrillation.- Restricted or Expanded Indications for Low-Energy Internal Cardioversion?.- Internal Atrial Defibrillation: What Are the Effects on Mechanical Function?.- Implantable Atrial Defibrillator: Which Results and Indications?.- The Implantable Atrial Defibrillator: Are All the Problems Solved.- Atrial Fibrillation: Prevention of Thromboembolism.- Atrial Fibrillation and ThrombolÓ>