Clinical endocrinology · 2013
Pituitary dysfunction after traumatic brain injury in children: is there a need for ongoing endocrine assessment?
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Casano-Sancho Paula, Suárez Larisa, Ibáñez Lourdes, García-Fructuoso Gemma, Medina Julita, Febrer Anna
Аннотация
BACKGROUND: Hypopituitarism has been widely described in adults after traumatic brain injury (TBI); however, the available data in paediatric populations are scarce. Here, we report the results of a prospective, long-term study in children, adolescents and young adults.
STUDY GROUP: Thirty-seven children (age, 2 months to 19·9 years) of 51 eligible patients were followed for 1 year. Clinical and baseline endocrine variables were assessed in all 3 and 12 months after TBI; children ≥ 6 years underwent two stimulation tests (glucagon stimulation and megatest).
RESULTS: In the group ≥6 years, 11 of 23 patients (47·8%) had a subnormal GH peak 3 months after TBI that persisted in 8 of 23 patients (34%) after 1 year. The GH response showed no correlation with injury severity (GCS, Marshall classification). Growth velocity was normal in all patients, except for one. Body mass index (BMI) SDS increased significantly in the group with low GH response. A suboptimal cortisol was observed in 10 of 23 subjects, which normalized in all but three, 1 year thereafter. All patients but one showed a pubertal response to GnRH testing. No clinical or hormonal abnormalities were detectable in children <6 years.
CONCLUSION: Our results recommend to prospectively follow children after TBI: firstly, because the impairment of pituitary function cannot be predicted, and secondly, to avoid the potential consequences of pituitary dysfunction. Prospective clinical trials are needed before recommending a systematic screening after TBI and/or GH therapy either in postpubertal children or in prepubertal children who grow normally.
STUDY GROUP: Thirty-seven children (age, 2 months to 19·9 years) of 51 eligible patients were followed for 1 year. Clinical and baseline endocrine variables were assessed in all 3 and 12 months after TBI; children ≥ 6 years underwent two stimulation tests (glucagon stimulation and megatest).
RESULTS: In the group ≥6 years, 11 of 23 patients (47·8%) had a subnormal GH peak 3 months after TBI that persisted in 8 of 23 patients (34%) after 1 year. The GH response showed no correlation with injury severity (GCS, Marshall classification). Growth velocity was normal in all patients, except for one. Body mass index (BMI) SDS increased significantly in the group with low GH response. A suboptimal cortisol was observed in 10 of 23 subjects, which normalized in all but three, 1 year thereafter. All patients but one showed a pubertal response to GnRH testing. No clinical or hormonal abnormalities were detectable in children <6 years.
CONCLUSION: Our results recommend to prospectively follow children after TBI: firstly, because the impairment of pituitary function cannot be predicted, and secondly, to avoid the potential consequences of pituitary dysfunction. Prospective clinical trials are needed before recommending a systematic screening after TBI and/or GH therapy either in postpubertal children or in prepubertal children who grow normally.