His bundle electrogram in P mitrale.
D006328:Cardiac Catheterization; D004562:Electrocardiography; D006325:Heart Atria / Q000294:innervation; D006329:Heart Conduction System / Q000502:physiology / Q000503:physiopathology*; D006801:Humans; D008946:Mitral Valve Stenosis / Q000503:physiopathology*; D012849:Sinoatrial Node / Q000503:physiopathology; D013997:Time Factors