title: Discontinuation of beta blockers before exercise radionuclide ventriculograms.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D003327:Coronary Disease / Q000000981:diagnostic imaging*; D006321:Heart / Q000000981:diagnostic imaging* / Q000187:drug effects; D006801:Humans; D005082:Physical Exertion; D011433:Propranolol / Q000627:therapeutic use; D011877:Radionuclide Imaging; D013997:Time Factors
chemical_list: D000319:Adrenergic beta-Antagonists; D011433:Propranolol