A heart attack is a condition when a blood clot clogs a blood vessel. Therefore, doctors use the "microinfarction" test to determine the presence of abnormal areas in a patient's circulatory system. During a heart attack, blood reaches the heart with insufficient oxygen and nutrients. This deficiency is felt throughout the body, so patients' quality of life usually decreases. As a rule, heart attacks are the result of atherosclerosis, and not primary problems with the heart and other blood vessels. Test