Potentiation of myocardial contractility by continual premature extra-activations.
D000818:Animals; D002118:Calcium; D002415:Cats; D002815:Chordae Tendineae / Q000502:physiology*; D004558:Electric Stimulation; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D009638:Norepinephrine / Q000378:metabolism; D010210:Papillary Muscles / Q000502:physiology*; D012965:Sodium Chloride / Q000494:pharmacology
D012965:Sodium Chloride; D002118:Calcium; D009638:Norepinephrine