• A 42-year-old man with generalized atherosclerosis underwent surgery of the left carotid artery with eventual placement of a Dacron graft bypassing the left carotid sinus. Subsequently, symptoms suggestive of pheochromocytoma developed, and 24-hour urine catecholamine levels were elevated. Clonidine testing resulted in suppression of plasma norepinephrine levels but was complicated by severe hypotension and a transient ischemic attack. Baroreceptor dysfunction may have been involved. Caution is advised and recommendations are offered for future usage of the clonidine suppression test.
(Arch Intern Med 1983;143:2195-2196)
Given BD, Taylor T, Lilly LS, Dzau VJ. Symptomatic Hypotension Following the Clonidine Suppression Test for Pheochromocytoma. Arch Intern Med. 1983;143(11):2195-2196. doi:10.1001/archinte.1983.00350110185039