Reactivity of Renal and Systemic Circulations to Vasoconstrictor Agents in Normotensive and Hypertensive Subjects*

Effect of l-norepinephrine on renal and systemic hemodynamics in normotensive and hypertensive subjects on regular salt intake * Subjectt l-Norepineph-Urine Age rine volume GFR RPF FF RR Pm Pulse yrs Aglminl ml/min ml/min ml/min % dynesmm Hg rate/min 1.73 m2 sec-cm' Normotensive subjects M.S. Control 39 4.9 13.2 21.4 42.4 O.V. Control 35 2.6 6.6 12.3 20.0