The management of cardiac arrhythmias has changed dramatically over the pas
t decade with improved understanding of arrhythmia mechanisms and applicati
on of revolutionary therapies, including radiofrequency ablation and the im
plantable cardioverter defibrillator (ICD). The rapid advancement in arrhyt
hmia management has been fueled by evidence-based medicine, which helps to
clarify optimal approaches to management. This review will touch on the hig
hlights of recent changes in our understanding of arrhythmia mechanisms and
management.