the neurosympathetic responsiveness of two groups of uremics , each group treated for the same mean time by dialysis , categorized as normotensive , mean age 28.3 +/- ( se ) 3 years , or dialysis hypotension-prone , mean age 49.6 +/- 5 years , was studied by determining plasma norepinephrine and epinephrine before and after postural activation of the sympathetic reflex arc .
C0028351
norepinephrine
C0014563
epinephrine