An ambulatory electrocardiogram (EKG) should be done by consulting a cardiologist. The EKG monitor can show the total heart rate over 24 hours, what is the fastest heart rate and the slowest heart rate over 24 hours, and in the case of a heart attack such as tightness in the chest and shortness of breath, especially in the case of panic attacks and dizziness, it can show whether the heart rate at that time is fast or slow, and whether or not there are any premature beats or whether or not there are any occurrences of ischemia in the myocardium. Observation of the 24-hour dynamic electrocardiogram can assess the whole patient’s electrocardiographic situation, after the assessment, you can go to the cardiology department, so that the cardiology department can analyze the situation of the 24-hour dynamic electrocardiogram, and then do the next step of the examination, if necessary, whether it is necessary to do the cardiac ultrasound, coronary CT, coronary angiogram to further clarify the diagnosis of the symptomatic treatment.