[Overdrive suppression].
D000818:Animals; D004573:Electrolytes / Q000378:metabolism; D006329:Heart Conduction System / Q000502:physiology*; D006801:Humans; D008564:Membrane Potentials; D012804:Sick Sinus Syndrome / Q000503:physiopathology; D012849:Sinoatrial Node / Q000502:physiology; D013997:Time Factors
D004573:Electrolytes