Among the causes of<unk>  are: * Aortic stenosis * Dilated cardiomyopathy * Acute myocardial infarction * Extensive coronary artery disease * Primary disease of the cardiac electrical conduction system * Long standing hypertension leading to aortic root dilatation and subsequent aortic regurgitation * Lyme disease
Left bundle branch block
Right bundle branch block
Bundle branch block
Sinoatrial block
Pre-excitation syndrome
Atrioventricular block
Sinoatrial arrest
Ventricular flutter