title: Types and clinical significance of fascicular blocks.
mesh_terms: D002037:Bundle-Branch Block / Q000175:diagnosis; D005117:Cardiac Complexes, Premature / Q000175:diagnosis; D004562:Electrocardiography; D006327:Heart Block / Q000145:classification* / Q000175:diagnosis; D006329:Heart Conduction System; D006801:Humans; D013610:Tachycardia / Q000175:diagnosis