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  • Title: Adrenal Insufficiency After Unilateral Adrenalectomy in Primary Aldosteronism: Long-Term Outcome and Clinical Impact.
    Author: Heinrich DA, Adolf C, Holler F, Lechner B, Schneider H, Riester A, Nirschl N, Sturm L, Wang X, Ladurner R, Seidensticker M, Bidlingmaier M, Beuschlein F, Reincke M.
    Journal: J Clin Endocrinol Metab; 2019 Nov 01; 104(11):5658-5664. PubMed ID: 31225874.
    Abstract:
    CONTEXT: Primary aldosteronism (PA) represents a secondary form of arterial hypertension that can be cured by surgery. Evidence of adrenal insufficiency (AI) was recently found in patients with PA who had undergone unilateral adrenalectomy (uADX). OBJECTIVE: To study the incidence and long-term outcome of postoperative AI after uADX for PA. DESIGN: Prospective registry study (August 2014 until the end of 2018). SETTING: Tertiary referral center. PATIENTS: One hundred consecutive patients undergoing uADX for PA were included. All patients underwent postoperative ACTH stimulation testing. INTERVENTION: Postoperative ACTH stimulation testing to identify patients with AI. MAIN OUTCOME MEASURES: Incidence of patients with postoperative AI and definition of long-term outcome. RESULTS: Twenty-seven percent of patients developed postoperative AI. Of these, 48% had postoperative ACTH stimulation serum cortisol levels ≤13.5 µg/dL (severe AI); 52% were classified into the group with moderate AI (stimulated serum cortisol levels: 13.5 to 17 µg/dL). Patients with severe AI required significantly longer hydrocortisone replacement therapy than the moderate group (median [25th, 75th percentiles]: 353 [294, 476] days; 95% CI: 284 to 322 days; vs 74 [32, 293] days; 95% CI: 11 to 137 days; P = 0.016). One patient with severe AI was hospitalized for an acute adrenal crisis. With a cumulative follow-up of 14.5 years, this produced an incidence rate of 6.9 adrenal crises per 100 patient-years. CONCLUSION: We suggest performing postoperative ACTH stimulation tests in all patients who undergo uADX for PA.
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