title: Parasympathetic and sympathetic mechanisms in sudden death.
mesh_terms: D000368:Aged; D001919:Bradycardia / Q000503:physiopathology; D003645:Death, Sudden; D005260:Female; D006323:Heart Arrest / Q000401:mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D010275:Parasympathetic Nervous System / Q000503:physiopathology*; D011433:Propranolol / Q000627:therapeutic use; D013564:Sympathetic Nervous System / Q000503:physiopathology*; D014693:Ventricular Fibrillation / Q000401:mortality / Q000517:prevention & control
chemical_list: D011433:Propranolol