Patients with rapid heart rate and the consequences are as follows: 1, transient rapid heart rate: If the patient is currently only transient rapid heart rate, there is not much significance, there will be no consequences, such as rapid heart rate after strenuous exercise, rest after the heart rate returned to normal levels, this situation will not produce any consequences; 2, supraventricular tachycardia or atrial fibrillation: If the patient’s rapid heart rate is the occurrence of supraventricular tachycardia or atrial fibrillation, it may trigger acute myocardial ischemia and induce serious consequences such as cerebral infarction and pulmonary embolism, and such problems are relatively rare in actual life; 3. Tachycardia: If it is tachycardia, it is more serious, lasts longer and is more dangerous. A fast heartbeat will lead to an increase in myocardial oxygen consumption and induce uncomfortable sensations in the precordial area, such as the appearance of chest tightness and chest pain, so the heart rate should be controlled as much as possible at 60-100 beats per minute.