A study of heart block in man using His bundle recordings.
D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis; D006328:Cardiac Catheterization; D004562:Electrocardiography; D004566:Electrodes; D006327:Heart Block / Q000175:diagnosis*; D006329:Heart Conduction System; D006801:Humans; D008297:Male; D008722:Methods