If the bradycardia is physiological, it generally does not harm the body and does not require special treatment. If the bradycardia is pathological, when the heartbeat significantly slows down, it can cause a decrease in cardiac output due to the slow heart rate, leading to symptoms of insufficient cardiac output, insufficient blood supply to the brain which can cause dizziness, visual disturbance, fainting, and other symptoms. Insufficient coronary artery supply can induce angina, and insufficient perfusion of the kidneys can lead to reduced urine output and kidney damage. Therefore, if a patient with bradycardia has a slow heart rate that leads to obvious symptoms, it is necessary to install a pacemaker for pacing treatment to increase the heart rate.