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. 2020 Apr;13(4):e008239.
doi: 10.1161/CIRCEP.119.008239. Epub 2020 Mar 18.

Left Bundle Branch Block: Current and Future Perspectives

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Left Bundle Branch Block: Current and Future Perspectives

Nicholas Y Tan et al. Circ Arrhythm Electrophysiol. .

Abstract

Left bundle branch block may be due to conduction system degeneration or a reflection of myocardial pathology. Left bundle branch block may also develop following aortic valve disease or cardiac procedures. Patients with heart failure with reduced ejection fraction and left bundle branch block may respond positively to cardiac resynchronization therapy. Lead placement via the coronary sinus is the mainstay approach of cardiac resynchronization therapy. However, other options, including physiological pacing, are being explored. In this review, we summarize the salient pathophysiologic and clinical aspects of left bundle branch block, as well as current and future strategies for management.

Keywords: aortic valve; atrioventricular node; cardiac resynchronization therapy; heart failure.

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