in six additional patients with high renin levels induced by prior sodium depletion ( 10 meq/day sodium diet ) , clonidine did not reduce blood pressure or renin , thus indicating that the suppressive action of this agent on renin pressor mechanisms occurs only in patients whose elevated renin levels are intrinsic to hypertension and unrelated to sodium depletion .
C0009014
clonidine
C0020538
hypertension