If the patient has heart tightness and panic, it may be due to an acute myocardial ischemic attack or a disturbance in the regulation of the patient’s vegetative nerve function. It is recommended that the patient’s heart rate and blood pressure be measured during the onset of the discomfort, and an electrocardiogram may be performed if available. This will help to clarify whether myocardial ischemia or arrhythmia is present. It is also recommended that the patient take sublingual Danshin drops or heart pills. For patients with previous hypertension, hyperlipidemia or diabetes, an angina attack is highly considered. The effect of nitroglycerin is relatively best at this time, but for patients with low blood pressure, sublingual administration is not recommended because it may lead to a further decrease in blood pressure. The patient is also advised to have an ambulatory electrocardiogram, cardiac ultrasound and, if necessary, a coronary CT.