A case of applying left bundle branch pacing combined with atrioventricular node ablation to treat atrial fibrillation-induced heart failure

The core treatment of rapid arrhythmiainduced heart failure （HF） is to control the ventricular rate to an optimized lower level,which is usually achieved with various anti-arrhythmic drugs. However, arrhythmias may not respond well to pharmaceutical treatment for various reasons.Iatrogenic atrioventricular （AV） node ablation needs to be performed under these extreme conditions to lower the patient’s heart rate.