Left Bundle Branch Pacing Cuts Cardiomyopathy Risk by 67% Over Right Ventricular Pacing
For patients who rely heavily on cardiac pacemakers, where the pacing lead is placed matters enormously. This randomized trial compared left bundle branch pacing (LBBP), a newer physiological approach, against traditional right ventricular pacing (RVP) in 160 high-risk patients over three years. LBBP reduced the combined risk of death, heart failure hospitalization, and pacing-induced cardiomyopathy by nearly 70%. The benefit was driven mainly by a dramatic drop in pacing-induced cardiomyopathy — from 18% with RVP down to just 6.5% with LBBP. Patients receiving LBBP also showed meaningfully better heart pump function, smaller heart dimensions, and improved functional capacity. These findings suggest LBBP should be strongly considered as the preferred pacing strategy for patients at high risk of cardiac dysfunction.