Chronic myocardial infarction is a more serious disease that requires attention because the body has had a myocardial infarction in the past and is more likely to have another infarction than normal.
After an acute myocardial infarction, the necrotic myocardium gradually becomes scarred and cannot return to its previous normal state, and the remaining manifestations are called old myocardial infarction. Some people may not have obvious symptoms, but compared to the general population, people with old myocardial infarction are more likely to have another heart attack.
If the infarction is large and severe, it may affect the structure and function of the heart, and symptoms of heart failure, such as chest tightness, shortness of breath, and sedentary breathing, may gradually appear.
Old myocardial infarction is an irreversible pathologic change and remains dangerous, requiring regular follow-up and monitoring of the condition as prescribed by the doctor.