His bundle rhythm.
D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D006328:Cardiac Catheterization; D004562:Electrocardiography; D004566:Electrodes; D006329:Heart Conduction System / Q000502:physiology* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D014261:Tricuspid Valve