This book deals with several subjects of actual interest in the field of cardiology, developed by experienced researchers in their respective fields. The authors comment on their own papers and experience all throughout the chapters in an easy-to-read format. Since modern cardiology demands continuous updating on specific topics of the varied spectra of cardiology, this book is devoted to diagnostic techniques, pathophysiology, clinical aspects and treatment. It presents comprehensive reviews of the subjects, making it useful to internists and cardiologists who want an updated review of the selected issues portrayed in the book. In this way, the book represents a further stage beyond classic structured books aimed toward cardiologists, cardiovascular surgeons, pediatricians and enthusiastic general practitioners. The chapters have been chosen because of the importance of the subjects they cover, as well as the expertise of the authors. All of them are well known experts and have been extensively published in international journals. In summary, this publication updates the main findings in cardiovascular diseases at present. This vast branch of medicine is rapidly expanding and many scientific manuscripts have appeared and continue to appear. Nevertheless, this review presents a compilation and review of the newest, most important issues in one volume.