Load independence of the instantaneous pressure-volume ratio of the canine left ventricle and effects of epinephrine and heart rate on the ratio.
D000818:Animals; D001794:Blood Pressure; D002302:Cardiac Output; D002306:Cardiac Volume / Q000187:drug effects; D004285:Dogs; D004837:Epinephrine / Q000494:pharmacology*; D006321:Heart / Q000294:innervation; D006339:Heart Rate; D006352:Heart Ventricles / Q000187:drug effects; D010991:Plethysmography; D013997:Time Factors; D014159:Transducers; D016276:Ventricular Function
D004837:Epinephrine