title: Augmentation of electrical alternans with lowering of the heart rate in massive pericardial effusion. A report of a case.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D007275:Injections, Intravenous; D010490:Pericardial Effusion / Q000150:complications / Q000503:physiopathology*; D011217:Practolol / Q000008:administration & dosage / Q000627:therapeutic use; D013610:Tachycardia / Q000150:complications / Q000188:drug therapy
chemical_list: D011217:Practolol