Chest pain is a very common symptom, and there are many causes of chest pain, including cardiac, respiratory, digestive, skeletal, muscular and many other causes, but angina pectoris caused by coronary heart disease is the most dangerous. In the hospital, we often encounter patients who come to the clinic because of chest pain. Some patients make a big deal out of it, while others act carelessly even though they have severe angina and may be in danger at any time. So, as a patient, how can you recognize angina pectoris in coronary heart disease? The following points can be your reference. 1, sudden onset of chest pain Angina attack chest pain, the patient rarely or no aura, during the two attacks, the patient can feel completely normal. Therefore, the sudden onset of severe chest pain, not to be taken lightly, is often an important signal of angina pectoris. 2, the site of chest pain in the anterior chest When angina attacks, the patient’s chest pain site is mostly in the left anterior chest, that is, the left anterior axillary line, the upper edge of the chest and back to the upper abdomen as the boundary of the region. The most frequent site is in the upper or middle part of the chest and back, which is often an area where the patient often has difficulty in expressing the exact site of the pain, and if it is a very precise point of pain, it is unlikely to be angina pectoris. 3, chest pain is difficult to accurately describe Angina attack, the patient often describes the chest has a compressive, tight, obstructive choking sensation, rather than real pain. However, patients are afraid to continue to move, which is a common characteristic of patients with angina pectoris. If the chest pain can be moved or is instead relieved after activity, it is less like angina pectoris. 4, emotion or activity induced chest pain attack Labor, excitement, anger, excitement, cold, etc., may induce angina, especially after meals, cold climate or in windy weather still outside activities, more likely to make the chest pain attack. This is also one of the important features of angina pectoris. It is important to note that it is only when the chest pain occurs during the activity that it may be angina, but if it is after a day of activity or exertion, or if you feel chest tightness when you return home, it is not quite like angina. 5, chest pain attacks last for a short time Angina attacks, often for three or five minutes, a very short time. Angina lasting more than half an hour is relatively rare, unless a myocardial infarction has occurred. So if the chest pain for half a day or a day, or even a few months is more unlike angina pectoris. 6, the consistency of the chest pain attack angina attack pain symptoms, specifically to each patient, the pain always occurs in the same location, and the duration of the same, the nature of the pain is also similar. The difference is mainly in the severity. These are closely related to the severity of coronary heart disease. 7, nitroglycerin effective chest pain attack, sublingual nitroglycerin (0.5 mg / tablet), for patients with coronary angina, there is a significant therapeutic effect, generally 2-3 minutes after containing the drug chest pain can be relieved, which is very important in the diagnosis of angina pectoris. If it is effective only 1-2 hours after taking the medicine, it may not be angina pectoris. In conclusion, angina is one of the danger signs of coronary heart disease, which should not be taken lightly by doctors and patients. Once angina occurs, it means that the condition is more serious, and since angina may lead to myocardial infarction, people with coronary heart disease should be familiar with the characteristics of angina and should take the right preventive and control measures under the guidance of their doctors.