Heart disease is a complex defect of the cardiovascular system with multiple pathological changes, which leads to impaired blood flow and, as a consequence, deterioration in the functioning of all organs and systems of the body.
With complex heart disease, the valves or blood vessels change. They interfere with normal blood flow, stagnation occurs, the volumes of the heart chambers change, and in general the functioning of the entire cardiovascular system is disrupted. Among complex defects, the most common are: - mitral valve; - tetralogy of Fallot; - pulmonary hypertension; — transposition of the great vessels; — AMA (anomalous MAG), etc.