Atrial fibrillation, also known as atrial fibrillation, is a common clinical manifestation of cardiac arrhythmias that can be treated with both pharmacological and non-pharmacological treatments. The main goal of treatment with Betaloc is to restore sinus rhythm, control the rapid ventricular rate, prevent thrombus formation and prevent strokes. However, for patients with atrial fibrillation, prolonged administration of Betaloc should be accompanied by monitoring of, for example, liver function, kidney function and heart function, as well as blood pressure monitoring. In addition, anticoagulants should be taken to prevent the formation of arterial and venous thrombosis in atrial fibrillation, for example, warfarin and Betaloc at the same time.