Cited by 93Traumatic Brain Injury and Neurovascular DisturbancesTraumatic Brain Injury ResearchPituitary Gland Disorders and Treatments

Acute neuro-endocrine profile and prediction of outcome after severe brain injury

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Olivecrona, Zandra, Dahlqvist, Per, Koskinen, Lars-Owe D·2013·Scandinavian Journal of Trauma Resuscitation and Emergency Medicine

Abstract

OBJECT: The aim of the study was to evaluate the early changes in pituitary hormone levels after severe traumatic brain injury (sTBI) and compare hormone levels to basic neuro-intensive care data, a systematic scoring of the CT-findings and to evaluate whether hormone changes are related to outcome. METHODS: Prospective study, including consecutive patients, 15-70 years, with sTBI, Glasgow Coma Scale (GCS) score ≤ 8, initial cerebral perfusion pressure > 10 mm Hg, and arrival to our level one trauma university hospital within 24 hours after head trauma (n = 48). Serum samples were collected in the morning (08-10 am) day 1 and day 4 after sTBI for analysis of cortisol, growth hormone (GH), prolactin, insulin-like growth factor 1 (IGF-1), thyroid-stimulating hormone (TSH), free triiodothyronine (fT3), free thyroxine (fT4), follicular stimulating hormone (FSH), luteinizing hormone (LH), testosterone and sex hormone-binding globulin (SHBG) (men). Serum for cortisol and GH was also obtained in the evening (17-19 pm) at day 1 and day 4. The first CT of the brain was classified according to Marshall. Independent staff evaluated outcome at 3 months using GOS-E. RESULTS: Profound changes were found for most pituitary-dependent hormones in the acute phase after sTBI, i.e. low levels of thyroid hormones, strong suppression of the pituitary-gonadal axis and increased levels of prolactin. The main findings of this study were: 1) A large proportion (54% day 1 and 70% day 4) of the patients showed morning s-cortisol levels below the proposed cut-off levels for critical illness related corticosteroid insufficiency (CIRCI), i.e. <276 nmol/L (=10 ug/dL), 2) Low s-cortisol was not associated with higher mortality or worse outcome at 3 months, 3) There was a significant association between early (day 1) and strong suppression of the pituitary-gonadal axis and improved survival and favorable functional outcome 3 months after sTBI, 4) Significantly lower levels of fT3 and TSH at day 4 in patients with a poor outcome at 3 months. 5) A higher Marshall CT score was associated with higher day 1 LH/FSH- and lower day 4 TSH levels 6) In general no significant correlation between GCS, ICP or CPP and hormone levels were detected. Only ICPmax and LH day 1 in men was significantly correlated. CONCLUSION: Profound dynamic changes in hormone levels are found in the acute phase of sTBI. This is consistent with previous findings in different groups of critically ill patients, most of which are likely to be attributed to physiological adaptation to acute illness. Low cortisol levels were a common finding, and not associated with unfavorable outcome. A retained ability to a dynamic hormonal response, i.e. fast and strong suppression of the pituitary-gonadal axis (day 1) and ability to restore activity in the pituitary-thyroid axis (day 4) was associated with less severe injury according to CT-findings and favorable outcome.

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  • Two recent studies suggested high rates (52%-78%) of hypothalamic-pituitary-adrenal axis dysfunction within the first 10 days after injury.

    “Two recent studies have suggested high rates (52%–78%) of hypothalamic–pituitary–adrenal axis dysfunction within the first 10 days after injury”

    From The screening and management of pituitary dysfunction following traumatic brain injury in adults: British Neurotrauma Group guidance (2017) · cites this paper as [48]

    The Results (Hypothalamic-pituitary-adrenal axis; page unavailable) report low cortisol in 52.3% of patients on day 1 and up to 70.5% on day 4 after severe traumatic brain injury, supporting a high rate of possible adrenal insufficiency early after injury. The paper does not report a 78% rate or identify two studies yielding the stated 52%–78% range; its Discussion also cautions that strict diagnostic criteria for cortisol insufficiency are lacking. (LLM, conf=0.85)

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Authors
Olivecrona, Z., Dahlqvist, P., & Koskinen, L.-O. D.
Affiliations
Umeå University (SE)
Corresponding author
Olivecrona, Zandra
Venue
Scandinavian Journal of Trauma Resuscitation and Emergency Medicine
Published
2013-04-20
Volume
21
Issue
1
Pages
33-33
ISSN
1757-7241 (ISSN-L)
OpenAlex
W2170602286
Cited by
93
References
65
Citations by year
2026: 6 · 2025: 13 · 2024: 10 · 2023: 6 · 2022: 5 · 2021: 11 · 2020: 4 · 2019: 10 · 2018: 5 · 2017: 5 · 2016: 4 · 2015: 10 · 2014: 4
FWCI
3.81
Type
journal article
Language
en
Open access
Locations
  • Scandinavian Journal of Trauma Resuscitation and Emergency Medicine (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DiVA at Umeå University (Umeå University) (submittedVersion, other-oa)
Funders
  • Pfizer
  • Kempe Foundation
Topics
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
Keywords
severe traumatic brain injury, pituitary hormones, neuroendocrine changes, cortisol, critical illness-related corticosteroid insufficiency, prolactin, thyroid hormones, functional outcome, mortality prediction, neurocritical care, sex hormone-binding globulin, luteinizing hormone, follicle-stimulating hormone, insulin-like growth factor I, growth hormone
MeSH terms
Adolescent, Adult, Aged, Brain Injuries, Female, Humans, Hydrocortisone, Hypothalamo-Hypophyseal System, Insulin-Like Growth Factor I, Luteinizing Hormone, Male, Middle Aged, Pituitary Hormones, Pituitary-Adrenal System, Prognosis, Prolactin, Prospective Studies, Radiography, Sex Hormone-Binding Globulin, Growth Hormone, Testosterone, Thyrotropin, Treatment Outcome, Young Adult

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