Primary hyperaldosteronism associated with hypertensive emergencies.

There is growing awareness of primary hyperaldosteronism as a cause of secondary hypertension. Usually, it manifests as hypertension and hypokalemia, or as resistant hypertension. Much less often, primary hyperaldosteronism may be detected after a hypertensive emergency has developed. We highlight this association by reporting on eight patients with a clinical diagnosis of primary hyperaldosteronism whose course was complicated by a hypertensive crisis. In all patients, an elevated serum aldosterone, was accompanied by a suppressed plasma renin activity despite the presence of a hypertensive crisis. A good outcome was obtained either with laparoscopic adrenalectomy (1 patient) or with an antihypertensive drug regimen that included an antialdosterone agent (7 patients). The differential diagnosis of hypertensive emergencies should include primary hyperaldosteronism.