title: Plasma catecholamine levels during local anesthesia for cataract operations.
mesh_terms: D000328:Adult; D000368:Aged; D000772:Anesthesia, Local; D002387:Cataract Extraction; D004837:Epinephrine / Q000097:blood*; D006801:Humans; D008875:Middle Aged; D009638:Norepinephrine / Q000097:blood*
chemical_list: D009638:Norepinephrine; D004837:Epinephrine