title: Blocked interpolated atrial premature contractions simulating Mobitz type 2 block. A manifestation of concealed antegrade conduction.
mesh_terms: D000368:Aged; D002036:Bundle of His / Q000503:physiopathology; D006328:Cardiac Catheterization; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male