![]() ![]() Permanent LBBP upgrade was successful in 19 of 20 patients with a median follow-up duration of 12 months. Clinical evaluation and echocardiographic and electrocardiographic assessments were recorded at baseline and follow-up. Patients with infranodal AVB and PICM who underwent LBBP for cardiac resynchronization therapy (CRT) were included. Our study was conducted to assess the feasibility, safety, and outcomes of permanent LBBP in infranodal AVB and PICM patients. Left bundle branch pacing (LBBP) results in rapid LV activation and may be able to reliably pace beyond the site of AVB. His bundle pacing (HBP) can reverse left ventricular (LV) remodeling in patients with right ventricular (RV) pacing-induced cardimyopathy (PICM) but may be unable to correct infranodal atrioventricular block (AVB). 8Department of Cardiology, Shanghai Institution of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, China.7Virginia Commonwealth University Medical Center, Richmond, VA, United States.6From the Division of Cardiology, Rush University Medical Center, Chicago, IL, United States. ![]() 5Department of Cardiac Echocardiology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China.4Key Lab of Cardiovascular Disease of Wenzhou, Wenzhou, China. ![]()
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