This textbook on implantable cardioverter defibrillators is organized in five sections: + Indication; + Instrumentation; + Implantation; + Follow-Up; + Complications. Implantable-Cardioverter Defibrillator Therapy: A Clinical Guide, written by leaders in the field, will be useful resource for cardiac electrophysiologists, general cardiologists and physicians in cardiac electrophysiology training.