Atrial fibrillation (atrial fibrillation) is the most common persistent arrhythmia. The incidence of atrial fibrillation increases with age and can be as high as 10% in people over 75 years of age. In atrial fibrillation, the frequency of atrial excitation reaches 300 to 600 beats/min. The heart rate is often fast and irregular, sometimes up to 100 to 160 beats/min. Not only is the heart rate much faster than normal, but it is absolutely irregular and the atria lose their effective contraction. The prevalence of atrial fibrillation is also closely related to diseases such as coronary heart disease, hypertension and heart failure. Common causes of atrial fibrillation include hypertension, coronary artery disease, cardiac surgery, valvular disease, heart failure, cardiomyopathy, congenital heart disease, pulmonary embolism, and hyperthyroidism, and are associated with alcohol consumption, mental stress, water-electrolyte disturbances, and severe infections; in addition, other types of arrhythmias can be combined. According to statistics, atrial fibrillation accounts for about 4% of the adult population, and the occurrence of atrial fibrillation is clearly age-related, with the occurrence of atrial fibrillation beginning to increase after the age of 40 and starting to increase significantly after the age of 65, with each 10-year increase in age. The incidence of atrial fibrillation in the elderly is about 7-14%.