CONTEXT: The annual death rate of Prader-Willi syndrome (PWS) patients is very high (3%). Many of these deaths are sudden and unexplained. OBJECTIVE: Because most deaths occur during moderate infections and PWS patients suffer from various hypothalamic insufficiencies, we investigated whether PWS patients suffer from central adrenal insufficiency (CAI) during stressful conditions. DESIGN: Overnight single-dose metyrapone tests were performed. Metyrapone (30 mg/kg) was administered at 2330 h. At 0400, 0600, and 0730 h, ACTH, 11-deoxycortisol, cortisol, and glucose levels were measured. Diurnal salivary cortisol profiles were assessed on a different day at wake-up, 30 min after wake-up, at 1400 h, and at 2000 h. SETTING: The study was conducted in a pediatric intensive care unit. PATIENTS: Patients included 25 randomly selected PWS patients. MAIN OUTCOME MEASURE: Patients were considered as having CAI when ACTH levels remained below 33 pmol/liter at 0730 h. RESULTS: Median (interquartile range) age was 9.7 (6.8-13.6) yr. Fifteen patients (60%) had an insufficient ACTH response (CAI, P < 0.001). There was no significant difference in age, gender, genotype, and body mass index SD score between patients with CAI and those without. Morning salivary cortisol levels and diurnal profiles were normal in all children, suggesting that CAI becomes apparent only during stressful conditions. CONCLUSIONS: Strikingly, 60% of our PWS patients had CAI. The high percentage of CAI in PWS patients might explain the high rate of sudden death in these patients, particularly during infection-related stress. Based on our data, one should consider treatment with hydrocortisone during acute illness in PWS patients unless CAI has recently been ruled out with a metyrapone test.
CONTEXT: The annual death rate of Prader-Willi syndrome (PWS) patients is very high (3%). Many of these deaths are sudden and unexplained. OBJECTIVE: Because most deaths occur during moderate infections and PWSpatients suffer from various hypothalamic insufficiencies, we investigated whether PWSpatients suffer from central adrenal insufficiency (CAI) during stressful conditions. DESIGN: Overnight single-dose metyrapone tests were performed. Metyrapone (30 mg/kg) was administered at 2330 h. At 0400, 0600, and 0730 h, ACTH, 11-deoxycortisol, cortisol, and glucose levels were measured. Diurnal salivary cortisol profiles were assessed on a different day at wake-up, 30 min after wake-up, at 1400 h, and at 2000 h. SETTING: The study was conducted in a pediatric intensive care unit. PATIENTS: Patients included 25 randomly selected PWSpatients. MAIN OUTCOME MEASURE: Patients were considered as having CAI when ACTH levels remained below 33 pmol/liter at 0730 h. RESULTS: Median (interquartile range) age was 9.7 (6.8-13.6) yr. Fifteen patients (60%) had an insufficientACTH response (CAI, P < 0.001). There was no significant difference in age, gender, genotype, and body mass index SD score between patients with CAI and those without. Morning salivary cortisol levels and diurnal profiles were normal in all children, suggesting that CAI becomes apparent only during stressful conditions. CONCLUSIONS: Strikingly, 60% of our PWSpatients had CAI. The high percentage of CAI in PWSpatients might explain the high rate of sudden death in these patients, particularly during infection-related stress. Based on our data, one should consider treatment with hydrocortisone during acute illness in PWSpatients unless CAI has recently been ruled out with a metyrapone test.
Authors: G Grugni; D Giardino; A Crinò; F Malvestiti; L Ballarati; G Di Giorgio; P Marzullo Journal: J Endocrinol Invest Date: 2010-07-22 Impact factor: 4.256
Authors: Jennifer L Miller; Jonathan Shuster; Douglas Theriaque; Daniel J Driscoll; Mary Wagner Journal: J Clin Sleep Med Date: 2009-10-15 Impact factor: 4.062
Authors: A Salvatoni; E Veronelli; L Nosetti; J Berini; S de Simone; L Iughetti; L Bosio; G Chiumello; G Grugni; G Delù; P Castelnuovo; G Trifirò; L Nespoli Journal: J Endocrinol Invest Date: 2009-05-15 Impact factor: 4.256