title: Detection and treatment of inapparent "blue spells" in the seriously ill patient with tetralogy of fallot.
mesh_terms: D003490:Cyanosis / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy*; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D011433:Propranolol / Q000008:administration & dosage; D013771:Tetralogy of Fallot / Q000150:complications*
chemical_list: D011433:Propranolol