Features of the course and diagnosis of heart failure in non-coronary myocardial lesions

Heart failure occurs as a result of various diseases, both caused by damage to the coronary arteries (in most cases, atherosclerosis), and not associated with the involvement of the coronary arteries in the process. A decrease in the functional capacity of the myocardium with heart damage is either a consequence of its excessive overload with an increased volume of blood entering the chambers of the heart during diastole, or the result of increased resistance to blood outflow during systole. The first occurs with heart defects with valve insufficiency, and the second occurs in case of obstruction of the blood flow in patients with stenosis of the holes or with hypertension of the large and pulmonary circulation.