Cardiac pacemakers are mainly categorized into temporary and permanent, and their lifespan is about 30 days and 8 to 10 years respectively. 1. Temporary pacemakers are mainly used for arrhythmia caused by various reasons, and can be implanted temporarily to help the heart beat effectively. Or when the heart rate is too slow due to various reasons such as acute myocardial infarction or cardiac conduction dysfunction, a temporary pacemaker can be implanted to effectively avoid cardiac arrest. Generally, the service life of temporary pacemakers is less than 30 days. 2. When a patient has heart failure due to sinus node dysfunction, atrioventricular (AV) conduction abnormality, or arrhythmia, a surgically implanted pacemaker is needed to stimulate the heart’s contraction and help improve the discomfort caused by the slow heart rate. Since pacemaker battery life is approximately 8-10 years, permanent pacemakers also have a life expectancy of 8-10 years. When the pacemaker battery is close to 80-90% depleted, you should go to the hospital for a replacement and try to avoid exposure to magnetic fields in your daily life.