title: Direct correlation of external systolic time intervals with internal indices of left ventricular function in man.
mesh_terms: D000328:Adult; D000680:Amyl Nitrite; D006328:Cardiac Catheterization; D002306:Cardiac Volume; D004562:Electrocardiography; D005080:Exercise Test; D006321:Heart / Q000502:physiology*; D006331:Heart Diseases / Q000175:diagnosis; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D007545:Isoproterenol; D008297:Male; D008365:Manometry; D008722:Methods; D010138:Pacemaker, Artificial; D010656:Phenylephrine; D011674:Pulse; D013997:Time Factors; D016276:Ventricular Function
chemical_list: D010656:Phenylephrine; D000680:Amyl Nitrite; D007545:Isoproterenol