Two cases of bilateral bundle branch block with prompt transitions in one and gradual transitions in the other case.
D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis / Q000503:physiopathology*; D004562:Electrocardiography; D005123:Eye; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D006985:Hyperventilation; D007279:Injections, Subcutaneous; D008297:Male; D009921:Metaproterenol / Q000008:administration & dosage; D011312:Pressure; D014636:Valsalva Maneuver
D009921:Metaproterenol