title: The second heart sound in left anterior hemiblock.
mesh_terms: D000368:Aged; D002037:Bundle-Branch Block / Q000503:physiopathology; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology; D006326:Heart Auscultation; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D010701:Phonocardiography