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Development of an Uncomplicated Mild Traumatic Brain Injury Model Modified by Weight-Drop Method and Evidenced by Magnetic Resonance Imaging
Published on: April 11, 2025
Mild traumatic brain injuries in adults
1Department of Neurosurgery, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bangalore - 560 029, India.
Abstract:
Mild traumatic brain injury (mTBI) is the commonest form of TBI. Though the name implies, it may not be mild in certain cases. There is a lot of heterogeneity in nomenclature, classification, evaluation and outcome of mTBI. We have reviewed the relevant articles on mTBI in adults, particularly its definition, evaluation and outcome, published in the last decade. The aspects of mTBI like pediatric age group, sports concussion, and postconcussion syndrome were not reviewed. There is general agreement that Glasgow coma score (GCS) of 13 should not be considered as mTBI as the risk of intracranial lesion is higher than in patients with GCS 14-15. All patients with GCS of <15 should be evaluated with a computed tomography (CT) scan. Patients with GCS 15 and risk factors or neurological symptoms should also be evaluated with CT scan. The outcome of mTBI depends on the combination of preinjury, injury and postinjury factors. Overall outcome of mTBI is good with mortality around 0.1% and disability around 10%.
Insights
Mild traumatic brain injury (mTBI) can have varied outcomes. Evaluation with computed tomography (CT) scans is recommended for GCS <15, and selected GCS 15 patients, guiding appropriate patient management.
Area of Science:
- Neurology
- Trauma Surgery
Background:
- Mild traumatic brain injury (mTBI) is the most frequent type of TBI, yet exhibits significant heterogeneity in definition, classification, and outcomes.
- Despite its name, mTBI can lead to severe consequences, necessitating refined diagnostic and management protocols.
Purpose of the Study:
- To review current literature on the definition, evaluation, and outcomes of mTBI in adults over the past decade.
- To clarify diagnostic criteria and identify factors influencing mTBI prognosis.
Main Methods:
- Systematic review of articles published in the last 10 years focusing on mTBI in adults.
- Analysis of diagnostic guidelines, particularly concerning Glasgow Coma Scale (GCS) scores and the role of computed tomography (CT) scans.
- Review of factors affecting mTBI outcomes.
Main Results:
- A Glasgow Coma Scale (GCS) score of 13 is generally not considered mTBI due to a higher risk of intracranial lesions compared to GCS 14-15.
- Computed tomography (CT) scans are recommended for all patients with GCS <15 and for GCS 15 patients presenting with risk factors or neurological symptoms.
- mTBI outcomes are influenced by a combination of pre-injury, injury, and post-injury factors, with overall good prognosis (mortality ~0.1%, disability ~10%).
Conclusions:
- Standardized evaluation protocols, including judicious use of CT scans based on GCS and clinical presentation, are crucial for managing mTBI.
- While generally favorable, mTBI outcomes are multifactorial, underscoring the need for comprehensive patient assessment and management strategies.
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