Left bundle branch pacing after failure of cardiac resynchronization therapy in a patient with heart failure and atrial fibrillation

For heart failure(HF) patients with reduced ejection fraction and atrial fibrillation (AF) with rapid ventricular response, cardiac resynchronization therapy (CRT) combined with atrioventricular junction ablation (AVJA) is an important treatment strategy. This article reports a case of HF with AF with rapid ventricular response in which the left ventricular lead implantation of CRT failed, and was successfully treated with left bundle branch pacing(LBBP) combined with AVJA and related literature is reviewed.