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Rate‐dependent aberrancy and cardiac resynchronization therapy
Author(s) -
Haseeb Sohaib,
Gul Enes Elvin
Publication year - 2020
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/pace.14039
Subject(s) - medicine , cardiac resynchronization therapy , left bundle branch block , cardiology , heart failure , exertional dyspnea , ventricular dyssynchrony , bundle branch block , cardiac function curve , ventricular function , electrocardiography , ejection fraction
Left bundle branch block (LBBB) can result in significant dyssynchrony in left ventricular (LV) contraction, ultimately leading to cardiac remodeling. LBBB can be rate dependent and may appear with LV systolic dysfunction. Cardiac resynchronization therapy (CRT) has been demonstrated to improve hemodynamics as well as clinical symptoms in patients with LBBB. We describe the case of a 57‐year‐old man who underwent CRT implantation due to exertional dyspnea, rate‐dependent LBBB, and impaired left LV systolic function.