สาเหตุ
    Right and left atrial enlargement
    Electrolyte abnormality, hypoxia, hypoglycemia
    Hyperthyroidism

การรักษา
    Acute treatment
        DC electrical cardioversion
        IV digoxin
    Chronic treatment
        Digitalis; if patient still has atrial fibrillation while receiving digitalis, then add propranolol or quinidine