title: Mechanism of intermittent bundle-branch block and paroxysmal atrioventricular block.
mesh_terms: D002037:Bundle-Branch Block / Q000175:diagnosis / Q000503:physiopathology*; D004562:Electrocardiography; D006325:Heart Atria; D006327:Heart Block / Q000175:diagnosis / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006352:Heart Ventricles; D006801:Humans