title: Stimulation threshold for cardiac pacing.
mesh_terms: D004567:Electrodes, Implanted; D005071:Evoked Potentials; D006321:Heart / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008564:Membrane Potentials; D010138:Pacemaker, Artificial; D011188:Potassium / Q000378:metabolism; D012964:Sodium / Q000378:metabolism
chemical_list: D012964:Sodium; D011188:Potassium