Mr. Yang, 48 years old, went to the hospital for chest tightness, and when he did a coronary CTA, it was found that his anterior descending branch opening was severely narrowed and almost occluded. Unlike many patients with coronary artery disease, Mr. Yang did not have any obvious symptoms of chest pain before he went to the hospital for checkups, but only felt chest tightness from time to time, and had a slight ST-T change on his ECG. Afterward, he also did an exercise plate test, which showed positive on the ECG when running at level IV, but still had no symptoms. Finally, based on the patient’s symptoms, coronary CTA examination and the display on the ECG, the patient was comprehensively judged to have stable coronary artery disease. Renowned experts in coronary interventional therapy said that, fortunately, the patient had stable coronary artery disease, and the plate exercise test had run up to level 4, yet he still did not have any symptoms. If it was unstable angina with such severe stenosis, the risk of sudden death during exercise would have been great. What are the symptoms of chest tightness in coronary artery disease? Normal people breathe naturally and effortlessly, but under the influence of certain diseases, the patient’s breathing becomes laborious, and there are shortness of breath, open-mouth breathing, nasal agitation and other abnormal manifestations, and this symptom is what we often call “chest tightness and shortness of breath”. Palpitations, panic, chest tightness and shortness of breath are common symptoms of certain diseases. Coronary heart disease is one of the most common cardiovascular diseases among middle-aged and elderly people, and the symptoms begin to manifest in the chest as a kind of crushing pain, which can radiate to the neck, jaw, arms, back, stomach, and can also be accompanied by dizziness, shortness of breath, sweating, nausea and other symptoms. People in serious condition may also have myocardial infarction, which seriously jeopardizes our health. Coronary heart disease is very harmful, its incidence rate is high, and the mortality rate is also high. What is the need to do the exercise plate test? 1.Examining coronary heart disease. Anyone who is suspected of coronary circulatory insufficiency, with atypical clinical symptoms or no clinical symptoms, no ST-T changes on calm electrocardiogram, and normal electrocardiogram can be considered to do the exercise test; 2. Evaluation and judgment of the degree of cardiac exercise tolerance and severity of the disease, formulation of exercise prescription, and guidance of rehabilitation training; 3. Evaluation of the efficacy of cardiac disease internal and surgical treatments; 4. Differential diagnosis of chest pain; 5. Prognostic evaluation of patients with myocardial infarction 6, evaluation of the nature of exercise-related arrhythmia; 7, myocardial ischemia of the degree, scope and exercise tolerance of progressive changes in the evaluation; 8, pilots physical examination, the identification of athletes physical state. These categories of people should be particularly alert to chest tightness and chest pain Some data show that 50%-70% of patients with coronary heart disease have typical symptoms, such as the occurrence of oppressive chest pain, tightness or constriction, with a burning sensation. But more dangerous is that 30% -50% of patients with angina attack symptoms are atypical, or even asymptomatic to follow, the onset of acute and critical, is a major cause of sudden death. From the patient’s extremely atypical coronary heart disease symptoms, we can know: typical coronary heart disease angina or myocardial infarction symptoms are more typical, but often clinically there are a lot of patients with symptoms are not very typical, can be manifested as a number of minor chest tightness, chest pain. Therefore, any clinical symptoms are not typical, calm electrocardiogram ST-T change is not obvious, or suspect that they are coronary heart disease, can consider doing a plate exercise test to further clarify whether there is coronary heart disease. In addition, smoking, obesity, hypertension, hyperlipidemia, diabetes and other high-risk factors, or have a family history of coronary heart disease people, do not ignore the coronary heart disease “suspected” symptoms. When you find chest pain, chest tightness or other parts of the inexplicable pain, it is best to go to the cardiovascular department to check.