Adrenergic beta-receptor blockade and ECG changes of organic origin.
D000818:Animals; D004285:Dogs; D004562:Electrocardiography; D006321:Heart / Q000187:drug effects*; D009206:Myocardium / Q000473:pathology; D011433:Propranolol / Q000494:pharmacology*; D013793:Thallium / Q000506:poisoning*
D011433:Propranolol; D013793:Thallium