This is the clinical policy from ACEP about not treating patients with asymptomatic hypertension in the ED. Feel free to whip it out next time a nurse wants clonidine before the patient can be discharged.

Clinical Policy: Critical Issues in the Evaluation and Management of Adult Patients with Asymptomatic Hypertension in the Emergency Department (http://www.acep.org/WorkArea/DownloadAsset.aspx?id=8806)