Recording of spike potentials of heart atria and His bundle using microcatheterization via subclavian vein.
D000200:Action Potentials; D002036:Bundle of His / Q000503:physiopathology*; D006328:Cardiac Catheterization / Q000379:methods*; D003327:Coronary Disease / Q000503:physiopathology; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans