title: Electrophysiological findings in frequency-dependent left bundle-branch block.
mesh_terms: D000200:Action Potentials; D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000150:complications / Q000503:physiopathology*; D003327:Coronary Disease / Q000150:complications; D004594:Electrophysiology; D005260:Female; D006325:Heart Atria; D006329:Heart Conduction System / Q000503:physiopathology; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D009205:Myocarditis / Q000150:complications; D010138:Pacemaker, Artificial; D013997:Time Factors