Cited by 46Growth Hormone and Insulin-like Growth FactorsPituitary Gland Disorders and TreatmentsTraumatic Brain Injury and Neurovascular Disturbances

Traumatic brain injury in children and adolescents: Surveillance for pituitary dysfunction

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Norwood, Kenneth W., DeBoer, Mark D., Gurka, Matthew J., Kuperminc, Michelle N., Rogol, Alan D., Blackman, James A., Wamstad, Julia B., Buck, Marcia L. +1 more·2010·Clinical Pediatrics

Abstract

BACKGROUND: Children who sustain traumatic brain injury (TBI) are at risk for developing hypopituitarism, of which growth hormone deficiency (GHD) is the most common manifestation. OBJECTIVE: To determine the prevalence of GHD and associated features following TBI among children and adolescents. STUDY DESIGN: A total of 32 children and adolescents were recruited from a pediatric TBI clinic. Participants were diagnosed with GHD based on insufficient growth hormone release during both spontaneous overnight testing and following arginine/glucagon administration. RESULTS: GHD was diagnosed in 5/32 participants (16%). Those with GHD exhibited more rapid weight gain following injury than those without GHD and had lower levels of free thyroxine and follicle-stimulating hormone. Males with GHD had lower testosterone levels. CONCLUSIONS: GHD following TBI is common in children and adolescents, underscoring the importance of assessing for GHD, including evaluating height and weight velocities after TBI. Children and adolescents with GHD may further exhibit absence or intermediate function for other pituitary hormones.

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Crossref · 10.1177/0009922810376234

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  • Cross-sectional studies documented 16%-61% prevalence of hypopituitarism at 1-5 years after injury in children.

    “Cross-sectional studies documented 16%–61% prevalence of hypopituitarism at 1–5 years after injury [23,34,37,38,39,40,41,42,43].”

    From Update of Endocrine Dysfunction following Pediatric Traumatic Brain Injury (2015) · cites this paper as [39]

    The Discussion (page unavailable) reports 42% growth hormone deficiency in a previous cross-sectional study of children after TBI, and the Results report 16% in Norwood's own cohort. The paper does not document a 16%–61% range for hypopituitarism in cross-sectional studies or establish the stated 1–5-year interval. (LLM, conf=0.87)

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  • There is currently non-conclusive evidence linking Glasgow Coma Scale scores or radiological findings with the risk of developing pituitary dysfunction following TBI.

    “However, there is currently non-conclusive evidence linking Glasgow Coma Scale (GCS) scores or radiological findings with the risk of developing pituitary dysfunction following TBI [2,5,16].”

    From Endocrine Dysfunctions After Pediatric Traumatic Brain Injury: Present Insights and Future Directions (2025) · cites this paper as [2]

    The Discussion reports conflicting evidence on whether initial GCS predicts later pituitary deficiency and finds no GCS difference between children with and without growth hormone deficiency. The Methods mention abnormal MRI findings as an enrollment criterion, but the paper does not assess whether radiological findings predict pituitary dysfunction. (LLM, conf=0.86)

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  • Norwood et al. reported isolated growth hormone deficiency in 16% of pediatric TBI patients.

    “whereas Norwood et al. reported isolated growth hormone deficiency (GHD) in 16% [2,20].”

    From Endocrine Dysfunctions After Pediatric Traumatic Brain Injury: Present Insights and Future Directions (2025) · cites this paper as [2]

    The Results report GHD in 5 of 32 children and adolescents with TBI (16%). They do not establish that all five had isolated GHD: the Results also state that one subject with GHD had diabetes insipidus, and the Discussion notes abnormalities in other hormone axes. (LLM, conf=0.92)

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  • Poomthavorn et al. identified pituitary dysfunction in 17% of pediatric TBI patients.

    “Similarly, Poomthavorn et al. identified pituitary dysfunction in 17% of patients, whereas Norwood et al. reported isolated growth hormone deficiency (GHD) in 16% [2,20].”

    From Endocrine Dysfunctions After Pediatric Traumatic Brain Injury: Present Insights and Future Directions (2025) · cites this paper as [2]

    The Results (page unavailable) report GHD in 5 of 32 pediatric TBI patients (16%), supporting the finding attributed to Norwood, not the separate 17% finding attributed to Poomthavorn. The paper does not establish that all five cases were isolated GHD: the Results note that one patient with GHD also had diabetes insipidus. (LLM, conf=0.88)

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  • Norwood et al. reported that using arginine/glucagon testing, 5 of 32 subjects (16%) failed to achieve an overnight GH peak above 5 ng/mL, while 10 of 32 (22%) had a stimulated peak GH response below 7 ng/mL.

    “For example, Norwood et al. reported that, using arginine/glucagon testing, 5 of 32 subjects (16%) failed to achieve an overnight GH peak above 5 ng/mL, while 10 of 32 (22%) had a stimulated peak GH response below 7 ng/mL.”

    From Endocrine Dysfunctions After Pediatric Traumatic Brain Injury: Present Insights and Future Directions (2025) · cites this paper as [2]

    The Results (page not supplied) report 6/32 subjects below the overnight GH threshold, not 5/32; 5/32 (16%) failed both tests. They report 10/32 with an insufficient stimulated response, but that is 31%, not 22%, and the stimulated threshold was 7 ng/mL for subjects under 18 and 5 ng/mL for those 18 or older. (LLM, conf=0.94)

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Authors
Norwood, K. W., DeBoer, M. D., Gurka, M. J., Kuperminc, M. N., Rogol, A. D., Blackman, J. A., Wamstad, J. B., Buck, M. L., & Patrick, P. D.
Affiliations
University of Virginia (US)
Corresponding author
Patrick, Peter D.
Venue
Clinical Pediatrics
Published
2010-08-19
Volume
49
Issue
11
Pages
1044-1049
ISSN
  • 0009-9228 (ISSN-L)
  • 1938-2707
OpenAlex
W2125665709
Cited by
46
References
32
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 2 · 2019: 5 · 2018: 1 · 2016: 4 · 2015: 2 · 2014: 5 · 2013: 6 · 2012: 5
FWCI
4.10
Type
journal article
Language
en
Open access
Locations
  • Clinical Pediatrics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Center for Research Resources (M01RR000847, M01-RR 00847)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD060739-01, K08HD060739)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
Keywords
traumatic brain injury, pediatric traumatic brain injury, adolescents, growth hormone deficiency, hypopituitarism, pituitary dysfunction, arginine stimulation test, growth hormone secretion, free thyroxine, follicle-stimulating hormone, testosterone, growth rate
MeSH terms
Adolescent, Arginine, Brain Injuries, Child, Female, Follicle Stimulating Hormone, Glucagon, Humans, Hypopituitarism, Male, Pituitary Gland, Risk Factors, Sex Factors, Testosterone, Thyroxine, Weight Gain, Prevalence, Human Growth Hormone, Young Adult

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