The most common symptoms of atrial fibrillation episodes are chest tightness, palpitations, shortness of breath, and fatigue. When atrial fibrillation causes a significant decrease in cardiac output, it can also lead to insufficient cerebral blood supply, causing symptoms such as dizziness and blackouts. Occasionally, it may also cause fainting in patients. When coronary artery blood supply is insufficient, it can also trigger angina attacks. Moreover, if atrial fibrillation leads to heart failure, it can cause significant respiratory difficulty. Atrial fibrillation is a common arrhythmia clinically. The treatment of atrial fibrillation should be based on the specific situation, choosing either cardioversion or controlling the ventricular rate. Cardioversion can be achieved through medication or radiofrequency ablation surgery, while controlling the ventricular rate can be managed with β-blockers, amiodarone, digoxin, and other drugs. In treating atrial fibrillation with ventricular rate control, patients need to take anticoagulants long-term to prevent the occurrence of peripheral arterial embolism. (Please follow medical advice regarding medications.)