• Pol. Arch. Med. Wewn. · Dec 2019

    Comparative Study

    Detecting adrenal insufficiency in patients with immunoglobulin A nephropathy, lupus nephritis, and transplant recipients qualified for glucocorticoid withdrawal.

    • Agata Pokrzywa, Urszula Ambroziak, Bartosz Foroncewicz, Magdalena Macech, Leszek Pączek, Michał Florczak, Krzysztof Mucha, and Tomasz Bednarczuk.
    • Department of Internal Diseases and Endocrinology, Medical University of Warsaw, Warsaw, Poland
    • Pol. Arch. Med. Wewn. 2019 Dec 23; 129 (12): 874-882.

    IntroductionLong‑term glucocorticoid (GC) therapy is the most common cause of secondary adrenal insufficiency (AI), which undiagnosed may lead to life‑threatening adrenal crisis.ObjectivesThe aim of the study was to evaluate AI in patients treated long‑term with GCs, receiving a low maintenance dose (≤5 mg of prednisone or equivalent), namely, its prevalence and persistence, risk factors, and diagnostic accuracy of morning cortisol and dehydroepiandrosterone sulfate (DHEA‑S) levels.Patients And MethodsAdrenal function was evaluated in 40 patients before and after GC withdrawal and at least 1 year later. Based on morning cortisol levels and short Synacthen test, patients were divided into 3 groups: AI, intermediate (partial AI), and AS (adrenal sufficiency). Receiver operator characteristic curves were calculated to assess the diagnostic value of morning cortisol and DHEA‑S levels before GC withdrawal.ResultsBefore GC withdrawal, 42.5% of patients had AI or partial AI, which together persisted in 64.3% of those patients after withdrawal. After more than a year, the adrenal function returned to normal only in 14% of patients. Cushingoid feature occurred more often in the AI group compared with the AS group (60% vs 13%; P = 0.03). Morning cortisol levels of 14.91 μg/dl or higher (411 nmol/l) gave 100% negative predictive value to rule out AI. Morning cortisol of 6.51 μg/dl or less (179.6 nmol/l) gave 100% positive predictive value to rule in AI. DHEA‑S proved to be a worse parameter for AI diagnosis.ConclusionsAI is common in patients treated with GCs and may persist for years after GC withdrawal. Cushingoid features are associated with a higher risk of AI. Morning cortisol levels may facilitate AI diagnosis.

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