Electrocardiography is a universal and accessible method for examining the human cardiovascular system. It is important to know and understand what and how is happening to your heart, whether you have cause for concern. The medical reference book “ECG Decoding” is the most complete publication prepared in accordance with the requirements of the national standard of the Russian Federation. A complete explanation of the operation of the electrocardiography method. A clear statement of the meanings and results. Complications and diseases of the cardiovascular system.