Diagnosing secondary hypertension.
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Abstract
Secondary hypertension is elevated blood pressure that results from an underlying, identifiable, often correctable cause. Only about 5 to 10 percent of hypertension cases are thought to result from secondary causes. The ABCDE mnemonic can be used to help determine a secondary cause of hypertension: Accuracy of diagnosis, obstructive sleep Apnea, Aldosteronism, presence of renal artery Bruits (suggesting renal artery stenosis), renal parenchymal disease (Bad kidneys), excess Catecholamines, Coarctation of the aorta, Cushing's syndrome, Drugs, Diet, excess Erythropoietin, and Endocrine disorders. An algorithm showing the general strategy to help screen for factors involved in secondary hypertension is presented. Routine urinalysis, complete blood cell count, blood chemistry profile (potassium, sodium, creatinine, fasting glucose, fasting lipid levels), and a 12-lead electrocardiogram are recommended for all patients with hypertension.