Abstract
Angina pectoris is not an independent disease, but a syndrome that is a manifestation of ischemic heart disease (IHD). Ischemic artery disease occurs due to insufficient blood supply to the heart muscle and is an acute or chronic heart dysfunction resulting from a relative or absolute decrease in the supply of the myocardium with arterial blood. In more than 90% of cases, the anatomical basis of ischemic heart disease is the lesion of the coronary arteries of the heart. Angina pectoris is a kind of heart signal about oxygen deficiency. The signal is felt in the form of attacks of short-term sudden acute compressive, pressing, burning pains in the heart region. In some patients, the pain is accompanied by a state of general discomfort, a feeling of lack of air, and interruptions in the work of the heart.
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