Patient: Paroxysmal atrial fibrillation for twelve years. I used to take Malecizine, etc., and started to take Kotarolone since last October. Although it can control the disease and paroxysmal atrial fibrillation has not occurred, it causes the current status of pulmonary decompensation, shortness of breath, dry cough and chest pain, and allergic rash. Are there any other drugs with less side effects? Shao-stable Liu, Department of Cardiology, Shanghai First People’s Hospital: If drug therapy is not tolerated, catheter ablation is still recommended.