Relationship of changes in ionic concentrations to the augmentation produced by extra contractions in isolated mammalian ventricular muscle.
D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D002136:Calcium, Dietary; D006321:Heart / Q000502:physiology*; D006352:Heart Ventricles; D008274:Magnesium / Q000494:pharmacology*; D009206:Myocardium / Q000502:physiology*; D011188:Potassium / Q000494:pharmacology*
D002136:Calcium, Dietary; D008274:Magnesium; D011188:Potassium; D002118:Calcium
CALCIUM/effects; MAGNESIUM/effects; MYOCARDIUM/physiology; POTASSIUM/effects