Simultaneous block proximal and distal to His bundle. An example of concealed "concealed conduction".
D000219:Adams-Stokes Syndrome / Q000175:diagnosis / Q000503:physiopathology; D000368:Aged; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male