Electrocardiogram, as a common examination, is believed to be familiar to many people. When visiting a doctor, patients are often told that they need to have an electrocardiogram (ECG) examination. Many patients have had an ECG examination in a confused way, but they still don't know why.

The EEG machine manufacturer pointed out that ECG machine examination is mainly for patients with heart disease or suspected heart disease. If your body shows heart-related symptoms such as palpitation, palpitation and rapid heartbeat, it is necessary to have ECG examination to judge the condition.

Electrocardiogram (ECG) is a record of cardiac electrical activity on the body surface. Electrocardiogram (ECG) has been used in clinic for a long time, which has a history of more than 100 years. Now ECG machines are becoming more and more perfect. Not only has clear records, strong anti-interference ability, but also is easy to operate and safe to use. It is the most commonly used method for early diagnosis of myocardial ischemia, myocardial infarction and various arrhythmia in coronary heart disease.

ECG monitoring coronary heart disease mainly includes three aspects: first, ST segment changes, mainly including ischemic ST segment depression, ST segment straight extension, ST segment elevation or unidirectional curve; Secondly, the change of T wave is mainly described as the low level or inversion of T wave. Doctors can diagnose the patient's condition by observing and analyzing the above two aspects.

Although electrocardiogram is regarded as an important clinical reference data for the diagnosis of coronary heart disease, it is not a reference basis. In the non-onset period of coronary heart disease, the detection rate of common electrocardiogram is only 30%-50%, and most patients' electrocardiogram is normal, so it is easy to delay the patient's condition.

Therefore, in clinical practice, we need to choose according to different needs. They can't replace each other. Everything should follow the doctor's advice and the doctor should determine the type of examination.