Patient: 45 years old with the same symptoms as coronary heart disease, but the test does not show what it is? Disease status: Had an electrocardiogram and cardiogram and said there was nothing wrong with the heart. There is only a small narrowing of a blood vessel. What is it? What can I do? Doctor: You are 45 years old and at the risk age of coronary heart disease. It is necessary to pay attention to the discomfort symptoms such as chest tightness and chest pain. I don’t know if you have an ECG when you have an attack or when you don’t have an attack. Sometimes the electrocardiogram may have abnormal performance during an attack. A normal coronary angiogram only indicates that the large coronary vessels are basically normal, while some patients may have microvascular abnormalities (such as diabetic patients). It is recommended that you do an exercise panel test, that is, an ECG under exercise load, to see if you can find clues to some diseases (such as myocardial ischemia). If this test is normal, you can rest assured that you can move appropriately, relax and observe.