Journal of Clinical Endocrinology & Metabolism, Vol 59, 1204-1206, Copyright © 1984 by Endocrine Society

ARTICLES

Rifampicin-induced adrenal crisis in addisonian patients receiving corticosteroid replacement therapy

V Kyriazopoulou, O Parparousi and AG Vagenakis

Rifampicin induced profound alterations in cortisol metabolism when administered to three patients with primary adrenal failure receiving adequate corticosteroid replacement therapy. In one patient, adrenal crisis was precipitated after the institution of rifampicin therapy for treatment of coexistent tuberculosis and in another, profound asthenia, decrease in blood pressure, hyperkalemia, and hyponatremia developed during the hydrocortisol kinetic study. The clinical symptoms subsided and the electrolyte abnormalities were corrected approximately 7 days after rifampicin withdrawal. The half-life of hydrocortisol and the area under the curve were decreased by 35% and 23%, respectively, whereas the systemic clearance was increased by 35% during rifampicin administration. It appears, that the effectiveness of glucocorticoids and mineralocorticoids were greatly impaired by rifampicin administration due to induction of liver steroid-metabolizing enzymes. It is strongly recommended that in patients with compromised adrenal function, treatment with rifampicin must be accompanied by doubling or tripling the dose of adrenal steroids to maintain adequate steroid replacement therapy.

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