Symptoms of severe myocardial ischemia

summary

Myocardial ischemia is a pathological state in which the blood perfusion of the heart is reduced, resulting in the decrease of oxygen supply to the heart, abnormal myocardial energy metabolism, and unable to support the normal work of the heart. The energy needed for heart activity is almost completely provided by aerobic metabolism, so even when it is quiet, the blood oxygen uptake rate of myocardium is also very high (about 70%). Under normal circumstances, the body can make the blood supply and demand relatively constant through self-regulation, so as to ensure the normal work of the heart. When some reason leads to the imbalance of myocardial blood supply and demand, it constitutes the true sense of myocardial ischemia. Coronary heart disease is the most important and common cause of myocardial ischemia. Let's talk about the symptoms of severe myocardial ischemia

Symptoms of severe myocardial ischemia

Angina pectoris is the most representative type of myocardial ischemia, characterized by chest paroxysmal, crushing pain, pain mainly located in the posterior sternum, can radiate to the precordial area and left upper limb, labor or emotional excitement often occur, after rest or with nitrate preparation disappear. It can be divided into stable angina pectoris, unstable angina pectoris and variant angina pectoris.

Myocardial infarction is often caused by secondary thrombosis on the basis of coronary atherosclerosis. With the progress of medical technology, the main mortality of this disease in the acute stage has decreased, but it is still a serious and fatal disease, the total mortality rate can reach 30%, we must pay attention to prevention, especially smoking, obesity, diabetes and lack of physical workers.

Long term myocardial ischemia and hypoxia can lead to myocardial cell necrosis, scar formation, myocardial fibrosis, known as ischemic cardiomyopathy, also known as myocardial fibrosis. It is characterized by cardiac stiffness, gradual enlargement, arrhythmia and heart failure. The main causes of death are progressive congestive heart failure, myocardial infarction and severe arrhythmia.

matters needing attention

Emotional stability, avoid great joy and great sorrow, keep enough sleep, regular defecation, not overworked, do not watch nervous and terrible novels and TV before going to bed, quit smoking and drink less, avoid excessive physical labor or sudden exertion, and do not exercise after a full meal.