If the heartbeat is 160 beats per minute, the patient is at risk of cardiac arrest and sudden death at any time. If the patient is currently experiencing atrial fibrillation, atrial flutter, atrial fibrillation, or atrial flutter beating faster, it is easy to have emboli dislodged, and if the emboli are embolized in the lungs, it forms a pulmonary embolism. If the embolism is in the head, it is cerebral infarction, cerebral embolism, cardiac arrest and sudden death can occur at any time, and some people may also have hemiplegia and aphasia. If the patient has tachycardia, the first thing is to clarify what type of arrhythmia it is, and then look for the cause of this condition to better control the heart rate and prevent dangerous situations.