Why do routine physical examinations only need ECG? What cardiac examination may produce adverse reactions? Electrocardiogram is usually used to detect the electrical activity of the heart. Because the mechanical equipment of ECG is simple and easy to obtain, there is no radiation source during examination, and there may be problems in a short time, it is often used to detect whether there are many problems such as atrial or ventricular enlargement, abnormal conduction, arrhythmia such as premature beats, sinus rhythm and atrial fibrillation in physical examination, and it is also one of the necessary items for public physical examination at present.

If myocardial infarction or hypoxia has occurred, we can also see the matching changes from the ECG, and even diagnose the heart problems from the disease. However, if we can't find the existing problems in the inquiry and auscultation, we can learn more from the ECG. It can be said that ECG can understand most of the situation of the heart, and can also check many heart diseases, but ECG has limitations, that is, some patients have no abnormalities for the time being, and ECG may not explain them, so other tests are needed to master the symptoms.

Generally speaking, when patients have symptoms of heart disease such as slight palpitation, chest tightness, chest pain, asthma, fatigue, etc., in order to grasp the correlation between symptoms and human organs, it is recommended to carry out stability tests, which in itself gives certain pressure to cardiovascular and cerebrovascular diseases, and it is easy to find shortcomings. After all, cardiovascular and cerebrovascular diseases are easy to find abnormalities under pressure, which in itself is exercise electrocardiogram, so as to further establish it; Secondly, we can take this opportunity to observe the whole process of cardiac hypoxia changes during exercise. Generally, the electrocardiogram of exercise and fitness will find abnormality before the patient has palpitation and shortness of breath, so it has the function of early warning and reminding.

In the past, exercise electrocardiogram was used to check coronary heart disease, but it has been gradually replaced by other tests. At present, exercise electrocardiogram is generally used to check the changes of blood pressure, energy, cardiopulmonary function and arrhythmia caused by exercise.