Left bundle branch block causes

Left bundle branch block Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]

Causes

Common Causes

The most common causes of LBBB include:

• Hypertension
• Coronary heart disease
• Congestive heart failure
• Hypertrophic obstructive cardiomyopathy
• Valvular heart disease

Causes of LBBB in Alphabetical Order

• Aortic insufficiency
• Aortic stenosis
• Aortic valve replacement
• Cardiomyopathy

• Ischemic cardiomyopathy
• Alcoholic cardiomyopathy
• Hypertrophic cardiomyopathy
• Restrictive cardiomyopathy
• Hypertensive cardiomyopathy
• Postpartum cardiomyopathy

• Chagas disease
• Coronary Artery Disease
• Dilated cardiomyopathy
• Endocarditis
• Hemochromatosis
• Hypertension
• Hypertrophic obstructive cardiomyopathy (HOCM)
• Ischemic heart disease
• Left ventricular hypertrophy
• Left ventricular outflow tract surgery
• Lyme disease
• Myocardial infarction
• Myocardial ischemia
• Myocarditis
• Primary disease of the cardiac electrical conduction system
• Progressive conduction system disease
• Rheumatic fever with aortic valve involvement
• Sarcoidosis
• Scleroderma
• Septal myomectomy