In this book we thought of a different approach, mainly aimed at reaching the majority of professionals in cardiology. With this book we want to address chiefly young cardiologists, cardiology residents in training, general practi- tioners, and cardiologists that wish to maintain and improve their clinical mission. Each chapter is devoted to a specific topic of cardiac diseases and is constructed starting from a clinical case, that is thoroughly discussed, then the description of the current referred knowledge and the guidelines in use.