Cardiology (from ancient Greek καρδία - heart and λόγος - study) is an extensive branch of medicine that studies the human cardiovascular system: the structure and development of the heart and blood vessels, their functions. as well as diseases, including the study of their causes, mechanisms of development, clinical manifestations, diagnostic issues, as well as the development of effective methods of their treatment and prevention. In addition, in the field of cardiology, there are problems of medical rehabilitation of persons with lesions of the cardiovascular system.