title: THE NORMAL VENTRICULAR GRADIENT DETERMINED WITH FRANK'S LEAD SYSTEM AND ITS RELATION TO THE HEART RATE CHANGE INDUCED BY VARIOUS PROCEDURES. STUDIES ON THE VENTRICULAR GRADIENT I.
mesh_terms: D000293:Adolescent; D000680:Amyl Nitrite; D001285:Atropine; D035843:Biomedical Research; D001919:Bradycardia; D002346:Carotid Sinus; D004562:Electrocardiography; D005123:Eye; D006339:Heart Rate; D006352:Heart Ventricles; D006801:Humans; D010600:Pharmacology; D014672:Vectorcardiography
chemical_list: D001285:Atropine; D000680:Amyl Nitrite
keywords: ADOLESCENCE; AMYL NITRITE; ATROPINE; BRADYCARDIA; CAROTID SINUS; CLINICAL RESEARCH; ELECTROCARDIOGRAPHY; EYE; PHARMACOLOGY; VECTORCARDIOGRAPHY