Shortening of the cardiac action potential due to a brief injection of KCl following the onset of activity.
D000200:Action Potentials; D002712:Chlorides / Q000494:pharmacology*; D006321:Heart / Q000187:drug effects*; D006801:Humans; D011188:Potassium / Q000494:pharmacology*
D002712:Chlorides; D011188:Potassium
CHLORIDES/effects; HEART/effect of drugs on; POTASSIUM/effects