The heart has a natural pacemaker, the sinus node, which delivers electrical impulses spontaneously and rhythmically and transmits them from top to bottom throughout the heart, causing the chambers of the heart to contract sequentially to perform the job of transporting blood. Proper functioning of the heart requires that the cardiac rhythm delivery and conduction system be structurally and functionally normal. However, under certain pathological conditions, lesions of the sinus node and conduction system can cause arrhythmias – irregular heartbeat rhythms that are too slow, too fast or slow at times, or cannot be adjusted to the body’s exercise and metabolic needs, or worse, prolonged cardiac arrest, syncope, vertigo, fatigue, shortness of breath In some cases, prolonged cardiac arrest, fainting, dizziness, fatigue, shortness of breath, palpitations, loss of consciousness, and even life-threatening symptoms may occur. There are many drugs for treating rapid heartbeat (including premature beats, tachycardia, etc.) and the results are often good, while there are few drugs for treating slow heartbeat with short duration of action and inaccurate efficacy, especially for oral drugs such as albuterol and atropine. Therefore, if it is clear that the cause of the slow heartbeat is long-term and chronic and not due to a transient cause (e.g., drugs, electrolyte disorders, and other acute causes), a pacemaker with proven efficacy must be chosen. A pacemaker is a battery-powered, small device that generates continuous and stable electrical pulses and consists of two parts: a pulse generator and electrode leads. Pacemaker implantation is a minimally invasive procedure, usually performed by a cardiologist in a catheterization laboratory, and is characterized by short duration, minimal trauma and quick recovery. The pulse generator is usually implanted in the subcutaneous tissue on the left or right side above the chest, and the electrode lead is connected to the pulse generator at one end and fixed to the myocardium on the inner side of the heart through a venous system at the other end. There are several types of pacemakers, which are generally classified as single-chamber (i.e., only one lead electrode is placed into one chamber of the heart, usually in the right ventricle) and dual-chamber (i.e., there are two leads, usually placed in the right atrium and right ventricle, respectively) pacemakers, the former being mostly non-physiological and the latter mostly physiological, and usually dual-chamber pacemakers are twice as expensive as single-chamber pacemakers. Pacemakers are usually smaller than a matchbox and have sophisticated electronic circuitry that continuously monitors, analyzes and records the patient’s heartbeat, delivering electrical pulses when necessary. The electrode leads are very thin, no more than 2.5 mm in diameter, and transmit electrical pulses to the heart, stimulating it to contract, while also feeding information about the heart’s activity back to the pulse generator, allowing it to adjust the next pulse delivery to the heart’s excitement. After pacemaker implantation, the patient’s arrhythmia is corrected and life can basically return to the level before the onset of the disease, allowing him to live and work like a normal person. Although a pacemaker is installed, anti-arrhythmic drugs may be needed at the same time to treat other arrhythmias (e.g., excessive heart rate), so please do not discontinue anti-arrhythmic drugs without a doctor’s advice.