The Potentiating Effect of ACTH and of Cortisone on Pressor Response to Intravenous Infusion of L-Nor-Epinephrine.

Abstract
The pressor response to an intraven. infusion of 2.1-13.9 [mu]g./min. of l-nor-epinephrine was studied, using a constant rate infusion apparatus, in 3 patients before and during admn. of ACTH and cortisone. Striking potentiation of the blood pressure response to nor-epinephrine was noted within 24 hours after admn. of 90-180 mg ACTH daily or 150-200 mg cortisone daily. The potentiating effect disappeared within 36 hours after the omission of these agents.