because of the central role of the sympathetic nervous system in mediating the stress response , plasma norepinephrine ( ne ) , epinephrine ( e ) , and dopamine ( da ) levels were measured in 61 traumatically brain-injured patients to determine whether catecholamine ( ca ) levels obtained within 48 hours after injury provide reliable prognostic markers of outcome .
C0028351
norepinephrine
C0014563
epinephrine