Traumatic brain injury and sight loss in military and veteran populations– a review

AbstractWar and combat exposure pose great risks to the vision system. More recently, vision related deficiencies and impairments have become common with the increased use of powerful explosive devices and the subsequent rise in incidence of traumatic brain injury (TBI). Studies have looked at the effects of injury severity, aetiology of injury and the stage at which visual problems become apparent. There was little discrepancy found between the frequencies or types of visual dysfunctions across blast and non-blast related groups, however complete sight loss appeared to occur only in those who had a blast-related injury. Generally, the more severe the injury, the greater the likelihood of specific visual disturbances occurring, and a study found total sight loss to only occur in cases with greater severity. Diagnosis of mild TBI (mTBI) is challenging. Being able to identify a potential TBI via visual symptoms may offer a new avenue for diagnosis.

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One-year costs of intensive care in pediatric patients with traumatic brain injury

Journal of Neurosurgery Pediatrics ◽

10.3171/2020.6.peds20189 ◽

2021 ◽

Vol 27 (1) ◽

pp. 79-86

Author(s):

Era D. Mikkonen ◽

Markus B. Skrifvars ◽

Matti Reinikainen ◽

Stepani Bendel ◽

Ruut Laitio ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Intensive Care ◽

Brain Injury ◽

Social Security ◽

Functional Outcome ◽

Injury Severity ◽

Pediatric Population ◽

Favorable Outcome ◽

Index Hospitalization ◽

Pediatric Tbi

OBJECTIVETraumatic brain injury (TBI) is a major cause of death and disability in the pediatric population. The authors assessed 1-year costs of intensive care in pediatric TBI patients.METHODSIn this retrospective multicenter cohort study of four academic ICUs in Finland, the authors used the Finnish Intensive Care Consortium database to identify children aged 0–17 years treated for TBI in ICUs between 2003 and 2013. The authors reviewed all patient health records and head CT scans for admission, treatment, and follow-up data. Patient outcomes included functional outcome (favorable outcome defined as a Glasgow Outcome Scale score of 4–5) and death within 6 months. Costs included those for the index hospitalization, rehabilitation, and social security up to 1 year after injury. To assess costs, the authors calculated the effective cost per favorable outcome (ECPFO).RESULTSIn total, 293 patients were included, of whom 61% had moderate to severe TBI (Glasgow Coma Scale [GCS] score 3–12) and 40% were ≥ 13 years of age. Of all patients, 82% had a favorable outcome and 9% died within 6 months of injury. The mean cost per patient was €48,719 ($54,557) (95% CI €41,326–€56,112). The index hospitalization accounted for 66%, rehabilitation costs for 27%, and social security costs for 7% of total healthcare costs. The ECPFO was €59,727 ($66,884) (95% CI €52,335–€67,120). A higher ECPFO was observed among patients with clinical and treatment-related variables indicative of parenchymal swelling and high intracranial pressure. Lower ECPFO was observed among patients with higher admission GCS scores and those who had epidural hematomas.CONCLUSIONSGreater injury severity increases ECPFO and is associated with higher postdischarge costs in pediatric TBI patients. In this pediatric cohort, over two-thirds of all resources were spent on patients with favorable functional outcome, indicating appropriate resource allocation.

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The role of salivary vesicles as a potential inflammatory biomarker to detect traumatic brain injury in mixed martial artists

Scientific Reports ◽

10.1038/s41598-021-87180-4 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Rani Matuk ◽

Mandy Pereira ◽

Janette Baird ◽

Mark Dooner ◽

Yan Cheng ◽

...

Keyword(s):

Gene Expression ◽

Traumatic Brain Injury ◽

Brain Injury ◽

Head Injury ◽

Injury Severity ◽

Expression Profiles ◽

High Impact ◽

Impact Mechanism ◽

Inflammatory Biomarker ◽

Potential Biomarker

AbstractTraumatic brain injury (TBI) is of significant concern in the realm of high impact contact sports, including mixed martial arts (MMA). Extracellular vesicles (EVs) travel between the brain and oral cavity and may be isolated from salivary samples as a noninvasive biomarker of TBI. Salivary EVs may highlight acute neurocognitive or neuropathological changes, which may be particularly useful as a biomarker in high impact sports. Pre and post-fight samples of saliva were isolated from 8 MMA fighters and 7 from controls. Real-time PCR of salivary EVs was done using the TaqMan Human Inflammatory array. Gene expression profiles were compared pre-fight to post-fight as well as pre-fight to controls. Largest signals were noted for fighters sustaining a loss by technical knockout (higher impact mechanism of injury) or a full match culminating in referee decision (longer length of fight), while smaller signals were noted for fighters winning by joint or choke submission (lower impact mechanism as well as less time). A correlation was observed between absolute gene information signals and fight related markers of head injury severity. Gene expression was also significantly different in MMA fighters pre-fight compared to controls. Our findings suggest that salivary EVs as a potential biomarker in the acute period following head injury to identify injury severity and can help elucidate pathophysiological processes involved in TBI.

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Study of Traumatic Brain Injury Due To Recent Earthquake in Manipal Teaching Hospital

Nepal Journal of Neuroscience ◽

10.3126/njn.v12i2.15895 ◽

2016 ◽

Vol 12 (2) ◽

pp. 63-66

Author(s):

Bal G Karmacharya ◽

Brijesh Sathian

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Head Injury ◽

Teaching Hospital ◽

Brain Injuries ◽

Injury Severity ◽

Traumatic Brain Injuries ◽

The Body ◽

Mild Head Injury ◽

Associated Injuries

The objective of this study was to review the demographics, causes injury, severity, treatment and outcome of traumatic brain injuries in victims of the April 2015 earthquake who were admitted in Manipal Teaching Hospital, Pokhara. A total of 37 patients was admitted under Neurosurgery Services. Collapse of buildings was the commonest cause of head injury. The majority of them had mild head injury. Associated injuries to other parts of the body were present in 40.54% patients.Nepal Journal of Neuroscience 12:63-66, 2015

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Self-awareness four years after severe traumatic brain injury: discordance between the patient’s and relative’s complaints. Results from the PariS-TBI study

Clinical Rehabilitation ◽

10.1177/0269215517734294 ◽

2017 ◽

Vol 32 (5) ◽

pp. 692-704 ◽

Cited By ~ 6

Author(s):

Camille Chesnel ◽

Claire Jourdan ◽

Eleonore Bayen ◽

Idir Ghout ◽

Emmanuelle Darnoux ◽

...

Keyword(s):

Quality Of Life ◽

Traumatic Brain Injury ◽

Brain Injury ◽

Severe Traumatic Brain Injury ◽

Significant Relationship ◽

Injury Severity ◽

Chronic Phase ◽

Functional Independence ◽

Severe Tbi

Objective: To evaluate the patient’s awareness of his or her difficulties in the chronic phase of severe traumatic brain injury (TBI) and to determine the factors related to poor awareness. Design/Setting/Subjects: This study was part of a larger prospective inception cohort study of patients with severe TBI in the Parisian region (PariS-TBI study). Intervention/Main measures: Evaluation was carried out at four years and included the Brain Injury Complaint Questionnaire (BICoQ) completed by the patient and his or her relative as well as the evaluation of impairments, disability and quality of life. Results: A total of 90 patient-relative pairs were included. Lack of awareness was measured using the unawareness index that corresponded to the number of discordant results between the patient and relative in the direction of under evaluation of difficulties by the patient. The only significant relationship found with lack of awareness was the subjective burden perceived by the relative (Zarit Burden Inventory) ( r = 0.5; P < 0.00001). There was no significant relationship between lack of awareness and injury severity, pre-injury socio-demographic data, cognitive impairments, mood disorders, functional independence (Barthel index), global disability (Glasgow Outcome Scale), return to work at four years or quality of life (Quality Of Life after Brain Injury scale (QOLIBRI)). Conclusion: Lack of awareness four years post severe TBI was not related to the severity of the initial trauma, sociodemographic data, the severity of impairments, limitations of activity and participation, or the patient’s quality of life. However, poor awareness did significantly influence the weight of the burden perceived by the relative.

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Relationship of “dose” of intracranial hypertension to outcome in severe traumatic brain injury

Journal of Neurosurgery ◽

10.3171/jns/2008/109/10/0678 ◽

2008 ◽

Vol 109 (4) ◽

pp. 678-684 ◽

Cited By ~ 127

Author(s):

Anne Vik ◽

Torbjørn Nag ◽

Oddrun Anita Fredriksli ◽

Toril Skandsen ◽

Kent Gøran Moen ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Intracranial Hypertension ◽

Scale Score ◽

Severe Traumatic Brain Injury ◽

Injury Severity ◽

Area Under The Curve ◽

Term Outcome ◽

Long Term Outcome ◽

Scale Scores

Object It has recently been suggested that the degree of intracranial pressure (ICP) above the treatment goal can be estimated by the area under the curve (AUC) of ICP versus time in patients with severe traumatic brain injury (TBI). The objective of this study was to determine whether the calculated “ICP dose”—the ICP AUC—is related to mortality rate, outcome, and Marshall CT classification. Methods Of 135 patients (age range 1–82 years) with severe TBI treated during a 5-year period at the authors' institution, 113 patients underwent ICP monitoring (84%). Ninety-three patients with a monitoring time > 24 hours were included for analysis of ICP AUC calculated using the trapezoidal method. Computed tomography scans were assessed according to the Marshall TBI classification. Patients with Glasgow Outcome Scale scores at 6 months and > 3 years were separated into 2 groups based on outcome. Results Sixty patients (65%) had ICP values > 20 mm Hg, and 12 (13%) developed severe intracranial hypertension and died secondary to herniation. A multiple regression analysis adjusting for Glasgow Coma Scale score, age, pupillary abnormalities and Injury Severity Scale score demonstrated that the ICP AUC was a significant predictor of poor outcome at 6 months (p = 0.034) and of death (p = 0.035). However, it did not predict long-term outcome (p = 0.157). The ICP AUC was significantly higher in patients with Marshall head injury Categories 3 and 4 (24 patients) than in those with Category 2 (23 patients, p = 0.025) and Category 5 (46 patients, p = 0.021) TBIs using the worst CT scan obtained. Conclusions The authors found a significant relationship between the dose of ICP, the worst Marshall CT score, and patient outcome, suggesting that the AUC method may be useful in refining and improving the treatment of ICP in patients with TBI.

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Moderate and severe traumatic brain injury: effect of blood alcohol concentration on Glasgow Coma Scale score and relation to computed tomography findings

Journal of Neurosurgery ◽

10.3171/2014.9.jns14322 ◽

2015 ◽

Vol 122 (1) ◽

pp. 211-218 ◽

Cited By ~ 28

Author(s):

Nils Petter Rundhaug ◽

Kent Gøran Moen ◽

Toril Skandsen ◽

Kari Schirmer-Mikalsen ◽

Stine B. Lund ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Injury Severity ◽

Blood Alcohol Concentration ◽

Alcohol Concentration ◽

Dependent Manner ◽

Blood Alcohol ◽

Severe Tbi ◽

Gcs Score ◽

Dose Dependent

OBJECT The influence of alcohol is assumed to reduce consciousness in patients with traumatic brain injury (TBI), but research findings are divergent. The aim of this investigation was to study the effects of different levels of blood alcohol concentration (BAC) on the Glasgow Coma Scale (GCS) scores in patients with moderate and severe TBI and to relate the findings to brain injury severity based on the admission CT scan. METHODS In this cohort study, 265 patients (age range 16–70 years) who were admitted to St. Olavs University Hospital with moderate and severe TBI during a 7-year period were prospectively registered. Of these, 217 patients (82%) had measured BAC. Effects of 4 BAC groups on GCS score were examined with ordinal logistic regression analyses, and the GCS scores were inverted to give an OR > 1. The Rotterdam CT score based on admission CT scan was used to adjust for brain injury severity (best score 1 and worst score 6) by stratifying patients into 2 brain injury severity groups (Rotterdam CT scores of 1–3 and 4–6). RESULTS Of all patients with measured BAC, 91% had intracranial CT findings and 43% had BAC > 0 mg/dl. The median GCS score was lower in the alcohol-positive patients (6.5, interquartile range [IQR] 4–10) than in the alcohol-negative patients (9, IQR 6–13; p < 0.01). No significant differences were found between alcohol-positive and alcohol-negative patients regarding other injury severity variables. Increasing BAC was a significant predictor of lower GCS score in a dose-dependent manner in age-adjusted analyses, with OR 2.7 (range 1.4–5.0) and 3.2 (range 1.5–6.9) for the 2 highest BAC groups (p < 0.01). Subgroup analyses showed an increasing effect of BAC group on GCS scores in patients with Rotterdam CT scores of 1–3: OR 3.1 (range 1.4–6.6) and 6.7 (range 2.7–16.7) for the 2 highest BAC groups (p < 0.01). No such relationship was found in patients with Rotterdam CT scores of 4–6 (p = 0.14–0.75). CONCLUSIONS Influence of alcohol significantly reduced the GCS score in a dose-dependent manner in patients with moderate and severe TBI and with Rotterdam CT scores of 1–3. In patients with Rotterdam CT scores of 4–6, and therefore more CT findings indicating increased intracranial pressure, the brain injury itself seemed to overrun the depressing effect of the alcohol on the CNS. This finding is in agreement with the assumption of many clinicians in the emergency situation.

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Abstract 230: Differential Effects of Prehospital Hypotension and Injury Severity in Isolated vs. Multisystem Major Traumatic Brain Injury

Circulation ◽

10.1161/circ.138.suppl_2.230 ◽

2018 ◽

Vol 138 (Suppl_2) ◽

Author(s):

Daniel W Spaite ◽

Chengcheng Hu ◽

Bentley J Bobrow ◽

Bruce J Barnhart ◽

Vatsal Chikani ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Injury Severity ◽

Treatment Effectiveness ◽

Guideline Implementation ◽

Body Region ◽

Head Region ◽

Differential Effects ◽

Severe Tbi

Background: In hospital-based studies, hypotension (HT, SBP <90) is more likely to occur in multisystem traumatic brain injury (MTBI) than isolated (ITBI). However, there are few EMS studies on this issue. Hypothesis: Prehospital HT is associated with differential effects in MTBI and ITBI and these effects are influenced by the severity of primary brain injury. Methods: Inclusion: TBI cases in the EPIC Study (NIH 1R01NS071049) before TBI guideline implementation (1/07-3/14). ITBI: Major TBI cases (CDC Barell Matrix Type 1) that had no injury with ICD9-based Regional Severity Score [RSS (AIS equivalent)] ≥3 in any other body region. MTBI: Type 1 TBI plus at least one non-head region injury with RSS ≥3. Results: Included were 13,435 cases [Excl: age <10 (5.9%), missing data (6.2%)]. 10,374 (77.2%) were ITBI, 3061 (22.8%) MTBI. Mortality: ITBI: 7.7% (797/10,374), MTBI: 19.2% (587/3061, p<0.0001). Prehospital HT occurred 3.5 times more often in MTBI (14.8%, 453/3061 vs 4.2%, 437/10,374; p<0.0001). Among HT cases, 40.8% (185/453) with MTBI died vs 30.9% with ITBI (135/437; p<0.0001). In the hypotensive moderate/severe TBI cohort (RSS-Head 3/4), MTBI mortality was 2.4 times higher (17.2%, 40/232) than ITBI (7.1%, 17/240, p = 0.001). However, in the hypotensive very/extremely severe TBI group (RSS-Head 5/6), mortality was almost identical in MTBI (73.4%, 141/192) and ITBI (72.1%, 116/161, p = 0.864). Conclusion: Among major TBI patients with prehospital HT, those with MTBI were much more likely to die than those with ITBI. However, this association varied dramatically with TBI severity. In mod/severe TBI cases with HT, MTBI mortality was 2.4 times higher than in ITBI. In contrast, in very/extremely severe TBI with HT, there was no identifiable mortality difference. Thus, in cases with substantial potential to survive the primary brain injury (mod/severe), outcome is markedly worse in patients with multisystem injuries. However, in very/extremely severe TBI, non-head region injuries have no apparent association with mortality. This may be because the TBI is the primary factor leading to death in these cases. The main EPIC study is evaluating whether this severity-based difference in “effect” has implications for TBI guideline treatment effectiveness.

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Correspondence of the Boston Assessment of Traumatic Brain Injury-Lifetime and In-Theater Department of Defense Medical Records

10.21203/rs.3.rs-659143/v1 ◽

2021 ◽

Author(s):

Sahra Kim ◽

Alyssa Currao ◽

Jennifer R. Fonda ◽

Brigitta Beck ◽

Alexandra Kenna ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Department Of Defense ◽

Medical Records ◽

Brain Injuries ◽

Injury Severity ◽

Assessment Tools ◽

System Level ◽

Chi Square ◽

Convenience Sample

Abstract Background: Since 2006, efforts have been made to increase the identification of traumatic brain injuries (TBIs) in post-9/11 military personnel. The BAT-L is the first validated instrument to diagnose TBIs throughout the lifespan in post-9/11 Veterans. The objective is to investigate the correspondence of the Boston Assessment of TBI-Lifetime (BAT-L) diagnostic prevalence and injury severity of traumatic brain injury with in-theater medical records from Department of Defense (DoD). Methods: A convenience sample of 153 Veterans deployed in 2011 enrolled in the TRACTS longitudinal cohort study was examined. Retrospective review of DoD online medical records to determine diagnostic prevalence and injury severity for all head injury cases during deployment were compared with diagnostic prevalence and injury severity from the BAT-L clinical interview using Chi-square analyses.Results: There was moderate correspondence for TBI diagnosis between the BAT-L and DoD records (κ = 0.42). Sensitivity was 72.7% and specificity was 82.8%. Comparison of injury severity also had moderate correspondence (κ = 0.41). Missing TBI diagnostic data from DoD records was frequent; 43% percent of TBIs reported on the BAT-L did not have any documentation of mTBI assessment or diagnosis in DoD records while 83% did not have in-theater documentation.Conclusions: Diagnosis of TBI via the BAT-L retrospective interview was both sensitive and specific when compared to DoD medical records. However, diagnostic correspondence was only moderate. This lack of diagnostic agreement was related to multiple factors including lack of documentation of injury, differences in assessment tools and goals, and other combat-related motivational factors associated with failure to report injuries while deployed. Several policies were implemented to address underreporting and under-documentation of TBI, yet challenges remain. Findings suggest changes at both individual-level (e.g. service members) and system-level (e.g. DoD/military branches) are needed to adequately diagnose and document all TBI during deployment.

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Behavioral Pain Indicators in Patients with Traumatic Brain Injury Admitted to an Intensive Care Unit

Journal of Caring Sciences ◽

10.15171/jcs.2018.030 ◽

2018 ◽

Vol 7 (4) ◽

pp. 197-203 ◽

Cited By ~ 1

Author(s):

Roghieh Nazari ◽

Saeed Pahlevan Sharif ◽

Kelly A Allen ◽

Hamid Sharif Nia ◽

Bit-Lian Yee ◽

...

Keyword(s):

Intensive Care Unit ◽

Traumatic Brain Injury ◽

Intensive Care ◽

Brain Injury ◽

Injury Severity ◽

Repeated Measure ◽

Neck Stiffness ◽

Significant Difference ◽

Eye Opening ◽

Different Levels

Introduction: A consistent approach to pain assessment for patients admitted to intensive care unit (ICU) is a major difficulty for health practitioners due to some patients’ inability, to express their pain verbally. This study aimed to assess pain behaviors (PBs) in traumatic brain injury (TBI) patients at different levels of consciousness. Methods: This study used a repeated-measure, within-subject design with 35 patients admitted to an ICU. The data were collected through observations of nociceptive and non-nociceptive procedures, which were recorded through a 47-item behavior-rating checklist. The analyses were performed by SPSS ver.13 software. Results: The most frequently observed PBs during nociceptive procedures were facial expression levator contractions (65.7%), sudden eye openings (34.3%), frowning (31.4%), lip changes (31.4%), clear movement of extremities (57.1%), neck stiffness (42.9%), sighing (31.4%), and moaning (31.4%). The number of PBs exhibited by participants during nociceptive procedures was significantly higher than those observed before and 15 minutes after the procedures. Also, the number of exhibited PBs in patients during nociceptive procedures was significantly greater than that of exhibited PBs during the non-nociceptive procedure. The results showed a significant difference between different levels of consciousness and also between the numbers of exhibited PBs in participants with different levels of traumatic brain injury severity. Conclusion: The present study showed that most of the behaviors that have been observed during painful stimulation in patients with traumatic brain injury included facial expressions, sudden eye opening, frowning, lip changes, clear movements of extremities, neck stiffness, and sighing or moaning.

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