China’s cardiovascular disease patients have reached 290 million people, the country every year about 3.7 million people die from cardiovascular disease, 2 out of every 5 deaths from cardiovascular disease, this disease has become the first of all diseases morbidity and mortality in China. Therefore many people go to the hospital as soon as they have palpitations, chest tightness, chest pain and other symptoms, the doctor will immediately prescribe an electrocardiogram examination, and then will recommend an ambulatory electrocardiogram. In this regard, many people find it strange: “Why do I have to pay for an ECG test after a routine ECG test? Today, we will talk to you about the dynamic ECG! 1, what is the dynamic electrocardiogram Dynamic electrocardiogram (also called long-range electrocardiogram) is through the dynamic electrocardiograph in the patient’s daily life for 24 hours or more to record the whole process of its cardiac activity, and with the computer for analysis and processing, in order to find in the conventional body electrocardiogram examination is not easy to find arrhythmias and myocardial ischemia, etc., for clinical diagnosis, treatment and judgment of the effectiveness of an important objective It provides an important objective basis for clinical diagnosis, treatment and judging the efficacy. Dynamic ECG was first created by the United States Holter in 1949, so it is also called Holter ECG. 2.Why can’t a normal ECG work? As we all know, a regular ECG is actually only a dozen seconds, so it can only record a dozen heartbeats. But does that mean there is no problem? 1), used to capture episodic, short bursts of ECG abnormalities From time to time in daily life, some people often have symptoms of suspected heart disease such as panic, chest tightness, chest pain, dizziness or syncope, but conventional examinations (including ECG) often find no solid evidence and make diagnosis difficult. At this time, the use of dynamic electrocardiography can often capture episodic, short-term paroxysmal arrhythmias or transient myocardial ischemic attacks that are difficult to detect by conventional electrocardiography, thus enabling the patient to receive a clear diagnosis and treatment. This is one of the most widely used cases of ambulatory ECG at present. 2) Qualitative and quantitative analysis of arrhythmias Some arrhythmias that have been detected by conventional ECG examination, but their nature or potential risk is not yet completely clear, can be analyzed qualitatively and quantitatively by further collecting a large amount of ECG information with the help of dynamic ECG examination, which can often clarify the type of arrhythmia, frequency of occurrence and degree of risk, etc. 3) Diagnosis of ischemic heart disease Conventional ECG has a high rate of missed diagnosis of myocardial ischemia. The 24-hour recording of ECG changes in the patient’s daily activities such as work, rest, sleep and urination and defecation not only significantly improves the detection rate of myocardial ischemia, but also shows the time period, duration, frequency, degree of ischemia and its relationship with the patient’s activities and symptoms, thus providing a more comprehensive and reliable objective basis for the diagnosis and treatment of ischemic heart disease. 4). 4) Evaluation of efficacy Evaluation of the efficacy of anti-arrhythmic and anti-myocardial ischemic drugs and the performance of artificial pacemakers, etc. 3.How to monitor This test is done by attaching several electrode pads to the front of the chest and connecting wires from each electrode pad to a recorder. This box is attached with a strap and can be carried home on the shoulder. The box should be firmly attached to the wires and electrodes and will not come off. It does not interfere with movement, just be careful not to damage it when moving and sleep face up at night. The doctor will send you a record paper to record the 24 hours, it is better to be more detailed. For example, when you go upstairs, when you go to the toilet, when you eat, and when you have chest tightness, chest pain, panic, shortness of breath and other uncomfortable feelings. The main reason for doing such a long check is to capture the ECG changes when there are symptoms, and also to analyze the overall pattern of heart rate and other changes throughout the day, etc. Once you have symptoms at a certain time of the day, the next day after the doctor transfers the ECG recorded throughout the day into the computer, you only need to enter the time on the computer, and the ECG of that time will be called up immediately to make an accurate judgment (such as arrhythmia, myocardial ischemia, or although there are symptoms but nothing wrong, etc.). 4, precautions 1), it is appropriate to move rather than static: the wearer should do some exercise, because most of the suspected angina pectoris patients are the disease caused by intense exercise, so as to facilitate the observation of the amount of exercise and myocardial ischemia, arrhythmia, for the doctor’s diagnosis reference. However, those with serious conditions should follow the doctor’s orders. 2), the skin should be dry and not wet: electrodes are attached to the forehead skin through the wire and the recorder, if the skin is wet, it may lead to poor contact between the motor and the skin, or even cause the electrode to fall off, and the examinees only have to redo. So the examination day can not shower, avoid sweating. 3), it is advisable to keep a diary: often record the results of the study of dynamic ECG has a helpful. If you register the time of discomfort and exercise in 24 hours, you can find out the ECG of this time period and analyze it to see if there is any change, which will provide a reliable basis for the doctor’s diagnosis and treatment. Finally, we remind you that you can move freely when you have an ECG, and it will not affect your daily life, so you can do whatever you want. You should not be afraid to move around since you brought the recorder home, like some people do. Otherwise, all the abnormalities that should be there will no longer appear. The purpose of having a checkup is to detect abnormalities. If the appearance of chest tightness, chest pain, etc. is related to activity, you can intentionally go for a moderate amount of activity in order to record the abnormality. Only then do you need someone to accompany you in case of an accident.