The aim of this book is to provide comprehensive information regarding cardiac defibrillation to the readers. Sudden cardiac attacks and ventricular arrhythmia cases are getting registered in big numbers leading to significant number of deaths. Invention of cardiac defibrillation has proved to be of vital contribution to the therapy of ventricular arrhythmia. With advancement in technology, modern and automated external and internal defibrillators are easily available today. The rapid advancement of technology over the past few years has posed a challenge for researchers and professionals to remain up-to-date. This book serves this purpose as it provides updated guidelines and clinical advices for cardiomyopathy patients. The possible complications and contradictions, pre-operation particulars i.e. antibiotics, anticoagulation etc. and the working and modeling of defibrillator equipment have also been discussed in the book.