title: Refractoriness of the right atrium and A--V conducting system. Influence of practolol, chronic hypoxia and uremia.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001283:Atrioventricular Node / Q000187:drug effects / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000187:drug effects / Q000503:physiopathology*; D006325:Heart Atria / Q000187:drug effects / Q000503:physiopathology; D006329:Heart Conduction System / Q000187:drug effects / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011217:Practolol / Q000494:pharmacology*; D012131:Respiratory Insufficiency / Q000503:physiopathology*; D014511:Uremia / Q000503:physiopathology*
chemical_list: D011217:Practolol