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Personnier C.,Gynecology and Diabetology Unit | Crosnier H.,Gynecology and Diabetology Unit | Meyer P.,Gynecology and Diabetology Unit | Chevignard M.,Hopital University Necker Enfants Malades | And 19 more authors.
Journal of Clinical Endocrinology and Metabolism | Year: 2014

Context: Traumatic brain injury (TBI) in childhood is a major public health issue. Objective: We sought to determine the prevalence of pituitary dysfunction in children and adolescents after severe TBI and to identify any potential predictive factors. Design: This was a prospective longitudinal study. Setting: The study was conducted at a university hospital. Patients: Patients, hospitalized for severe accidental or inflicted TBI, were included. The endocrine assessment was performed between 6 and 18 months after the injury. Main Outcome Measures: Basal and dynamic tests of pituitary function were performed in all patientsandGHdynamic testingwasrepeated in patients withlowstimulatedGHpeak (<7 ng/mL). The diagnosis of proven severe GH deficiency (GHD) was based on the association of two GH peaks less than 5 ng/mL on both occasions of testing and IGF-I levels below -2 SD score. Initial cranial tomography or magnetic resonance imaging was analyzed retrospectively. Results:Westudied 87 children and adolescents [60 males, median age 6.7 y (range 0.8 -15.2)] 9.5± 3.4 months after the TBI (73 accidental, 14 inflicted). The secondGHpeak, assessed 4.9±0.1 months after the first evaluation, remained low in 27 children and adolescents. Fifteen patients had a GH peak less than 5 ng/mL (mean IGF-ISDscore-1.3±1.5)andfive (5.7%) strict criteria for severeGHD. Two children had mild central hypothyroidism and one had ACTH deficiency. We did not find any predictive factors associated with existence of GHD (demographic characteristics, growth velocity, trauma severity, and radiological parameters). Conclusion: At 1 year after the severe TBI, pituitary dysfunction was found in 8% of our study sample. We recommend systematic hormonal assessment in children and adolescents 12 months after a severe TBI and prolonged clinical endocrine follow-up. © 2014 by the Endocrine Society.

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