• Darlene Y Robinson.
• Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland.
• J Emerg Med. 2015 Nov 1; 49 (5): 638-40.

BackgroundMost hypertensive patients have essential (primary) hypertension; only 5% to 10% have a secondary cause. Two clinical characteristics suggestive of secondary hypertension are early onset (< 30 years of age) and severe hypertension (>180/110 mm Hg). When faced with these findings, clinicians should consider a secondary cause of hypertension.Case ReportA 22-year-old woman being evaluated for asthma exacerbation in the emergency department was noted to have severe persistent hypertension. Additional evaluation revealed severe hypokalemia, metabolic alkalosis, and hypernatremia. The patient was admitted to the hospital for blood pressure management, electrolyte replacement, and further evaluation of presumed hyperaldosteronism. Diagnostic imaging revealed a large adrenal mass. Surgical resection was performed, leading to a diagnosis of hyperaldosteronism caused by adrenal carcinoma. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Secondary hypertension is far less common than essential hypertension; however, considering the large volume of patients seen in emergency departments, it is likely that some will have secondary hypertension. Emergency physicians should be aware of the clinical characteristics that suggest secondary hypertension so that the appropriate diagnostic and treatment pathways can be pursued.Copyright © 2015 Elsevier Inc. All rights reserved.

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