This book provides up-to-date guidance on the diagnosis and treatment of sudden death, including sudden cardiac and non-cardiac death. Sudden death (SD) has become a major challenge confronting not only cardiologists, but also specialists in respiratory medicine, endocrine medicine, infectious diseases, etc. Chronic diseases are also among the causes of SD. This book summarizes the occurrence of SD, especially in specific groups (such as women, young and middle-aged groups), its causes, predisposing factors, lifestyle, morbidity, point of care testing, and advanced treatment methods including extra-corporeal membrane oxygenation, cardiopulmonary resuscitation and hypothermia treatment. In order to improve the early diagnosis, prevention and treatment of SD in clinical practice, the book also provides extensive data on its pathophysiological mechanism, epidemiology and etiology, together with detailed analyses.