title: ECG patterns useful in the diagnosis of intermittent heart block.
mesh_terms: D000219:Adams-Stokes Syndrome / Q000175:diagnosis; D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis; D006328:Cardiac Catheterization; D002908:Chronic Disease; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial