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- Ekdahl, Natascha, et al.
(author)
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Cognitive Reserve, Early Cognitive Screening, and Relationship to Long-Term Outcome after Severe Traumatic Brain Injury
- 2022
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In: Journal of Clinical Medicine. - : MDPI. - 2077-0383. ; 11:7
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Journal article (peer-reviewed)abstract
- The objective was to investigate the relationship between early global cognitive functioning using the Barrow Neurological Institute Screen for Higher Cerebral Functions (BNIS) and cognitive flexibility (Trail Making Test (TMT), TMT B-A), with long-term outcome assessed by the Mayo-Portland Adaptability Index (MPAI-4) in severe traumatic brain injury (sTBI) controlling for the influence of cognitive reserve, age, and injury severity. Of 114 patients aged 18–65 with acute Glasgow Coma Scale 3–8, 41 patients were able to complete (BNIS) at 3 months after injury and MPAI-4 5–8 years after injury. Of these, 33 patients also completed TMT at 3 months. Global cognition and cognitive flexibility correlated significantly with long-term outcome measured with MPAI-4 total score (rBNIS = 0.315; rTMT = 0.355). Global cognition correlated significantly with the participation subscale (r = 0.388), while cognitive flexibility correlated with the adjustment (r = 0.364) and ability (r = 0.364) subscales. Adjusting for cognitive reserve and acute injury severity did not alter these relationships. The effect size for education on BNIS and TMT scores was large (d ≈ 0.85). Early screenings with BNIS and TMT are related to long-term outcome after sTBI and seem to measure complementary aspects of outcome. As early as 3 months after sTBI, educational level influences the scores on neuropsychological screening instruments.
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| 2. |
- Ekdahl, Natascha, et al.
(author)
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Investigating cognitive reserve, symptom resolution and brain connectivity in mild traumatic brain injury
- 2023
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In: BMC Neurology. - : BioMed Central (BMC). - 1471-2377. ; 23:1
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Journal article (peer-reviewed)abstract
- BackgroundA proportion of patients with mild traumatic brain injury (mTBI) suffer long-term consequences, and the reasons behind this are still poorly understood. One factor that may affect outcomes is cognitive reserve, which is the brain's ability to maintain cognitive function despite injury. It is often assessed through educational level or premorbid IQ tests. This study aimed to explore whether there were differences in post-concussion symptoms and symptom resolution between patients with mTBI and minor orthopedic injuries one week and three months after injury. Additional aims were to explore the relationship between cognitive reserve and outcome, as well as functional connectivity according to resting state functional magnetic resonance imaging (rs-fMRI).MethodFifteen patients with mTBI and 15 controls with minor orthopedic injuries were recruited from the emergency department. Assessments, including Rivermead Post-Concussion Questionnaire (RPQ), neuropsychological testing, and rs-fMRI scans, were conducted on average 7 days (SD = 2) and 122 days (SD = 51) after injury.ResultsAt the first time point, significantly higher rates of post-concussion symptoms (U = 40.0, p = 0.003), state fatigue (U = 56.5, p = 0.014), and fatigability (U = 58.5, p = 0.025) were observed among the mTBI group than among the controls. However, after three months, only the difference in post-concussion symptoms remained significant (U = 27.0, p = 0.003). Improvement in post-concussion symptoms was found to be significantly correlated with cognitive reserve, but only in the mTBI group (Spearman's rho = -0.579, p = .038). Differences in the trajectory of recovery were also observed for fatigability between the two groups (U = 36.5, p = 0.015). Moreover, functional connectivity differences in the frontoparietal network were observed between the groups, and for mTBI patients, functional connectivity differences in an executive control network were observed over time.ConclusionThe findings of this pilot study suggest that mTBI, compared to minor orthopedic trauma, is associated to both functional connectivity changes in the brain and concussion-related symptoms. While there is improvement in these symptoms over time, a small subgroup with lower cognitive reserve appears to experience more persistent and possibly worsening symptoms over time. This, however, needs to be validated in larger studies.Trial registrationNCT05593172. Retrospectively registered.
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| 5. |
- Godbolt, Alison K., et al.
(author)
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Associations between care pathways and outcome 1 year after severe traumatic brain injury
- 2015
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In: The journal of head trauma rehabilitation. - Philadelphia : Lippincott Williams & Wilkins. - 0885-9701 .- 1550-509X. ; 30:3, s. E41-E51
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Journal article (peer-reviewed)abstract
- Objective: To assess associations between real-world care pathways for working-age patients in the first year after severe traumatic brain injury and outcomes at 1 year.Setting and Design: Prospective, observational study with recruitment from 6 neurosurgical centers in Sweden and Iceland. Follow-up to 1 year, independently of care pathways, by rehabilitation physicians and paramedical professionals.Participants: Patients with severe traumatic brain injury, lowest (nonsedated) Glasgow Coma Scale score 3 to 8 during the first 24 hours and requiring neurosurgical intensive care, age 18 to 65 years, and alive 3 weeks after injury.Main Measures: Length of stay in intensive care, time between intensive care discharge and rehabilitation admission, outcome at 1 year (Glasgow Outcome Scale Extended score), acute markers of injury severity, preexisting medical conditions, and post-acute complications. Logistic regression analyses were performed.Results: A multivariate model found variables significantly associated with outcome (odds ratio for good outcome [confidence interval], P value) to be as follows: length of stay in intensive care (0.92 [0.87-0.98], 0.014), time between intensive care discharge and admission to inpatient rehabilitation (0.97 [0.94-0.99], 0.017), and post-acute complications (0.058 [0.006-0.60], 0.017).Conclusions: Delays in rehabilitation admission were negatively associated with outcome. Measures to ensure timely rehabilitation admission may improve outcome. Further research is needed to evaluate possible causation.
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| 6. |
- Godbolt, Alison K., et al.
(author)
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Subacute complications during recovery from severe traumatic brain injury : frequency and associations with outcome
- 2015
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In: BMJ Open. - : BMJ. - 2044-6055. ; 5:4
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Journal article (peer-reviewed)abstract
- Background: Medical complications after severe traumatic brain injury (S-TBI) may delay or prevent transfer to rehabilitation units and impact on long-term outcome.Objective: Mapping of medical complications in the subacute period after S-TBI and the impact of these complications on 1-year outcome to inform healthcare planning and discussion of prognosis with relatives.Setting: Prospective multicentre observational study. Recruitment from 6 neurosurgical centres in Sweden and Iceland.Participants and assessments: Patients aged 18-65 years with S-TBI and acute Glasgow Coma Scale 3-8, who were admitted to neurointensive care. Assessment of medical complications 3 weeks and 3 months after injury. Follow-up to 1 year. 114 patients recruited with follow-up at 1 year as follows: 100 assessed, 7 dead and 7 dropped out.Outcome measure: Glasgow Outcome Scale Extended.Results: 68 patients had >= 1 complication 3 weeks after injury. 3 weeks after injury, factors associated with unfavourable outcome at 1 year were: tracheostomy, assisted ventilation, on-going infection, epilepsy and nutrition via nasogastric tube or percutaneous endoscopic gastroscopy (PEG) tube (univariate logistic regression analyses). Multivariate analysis demonstrated that tracheostomy and epilepsy retained significance even after incorporating acute injury severity into the model. 3 months after injury, factors associated with unfavourable outcome were tracheostomy and heterotopic ossification (Fisher's test), infection, hydrocephalus, autonomic instability, PEG feeding and weight loss (univariate logistic regression). PEG feeding and weight loss at 3 months were retained in a multivariate model.Conclusions: Subacute complications occurred in two-thirds of patients. Presence of a tracheostomy or epilepsy at 3 weeks, and of PEG feeding and weight loss at 3 months, had robust associations with unfavourable outcome that were incompletely explained by acute injury severity.
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| 8. |
- Lindgren, Marie, 1974-, et al.
(author)
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Rehabilitering vid traumatisk hjärnskada behöver samordnas : Stora skillnader i Tillgång till hjärnskaderehabilitering ochspecialistkunskap i alla faser i förloppet och över landet
- 2021
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In: Läkartidningen. - : Sveriges Läkarförbund. - 0023-7205 .- 1652-7518. ; 118
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Research review (peer-reviewed)abstract
- Traumatisk hjärnskada är vanligt förekommande i alla åldrar och kan leda till behov av rehabiliteringsinsatser under många år.Kunskap och samarbete mellan flera specialiteter och samordning av insatser är viktiga för patienten genom hela vårdkedjan.Det finns ett behov av mer jämlik vård och stöd i att hantera hjärnskaderelaterade frågor genom hela livet.Vid specialiserad hjärnskaderehabilitering bedöms och behandlas komplexa förlopp med symtom som långvarig svår medvetandestörning, posttraumatisk agitation, kognitiva funktionsnedsättningar, fatigue, motoriska och kommunikativa svårigheter, synsvårigheter, yrsel och stimuluskänslighet efter traumatisk hjärnskada.
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| 9. |
- Nygren DeBoussard, Catharina, et al.
(author)
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Behavioural problems in the first year after Severe traumatic brain injury : a prospective multicentre study
- 2017
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In: Clinical Rehabilitation. - : SAGE Publications. - 0269-2155 .- 1477-0873. ; 31:4, s. 555-566
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Journal article (peer-reviewed)abstract
- OBJECTIVE: To investigate the occurrence of behavioural problems in patients with severe traumatic brain injury during the first year after injury and potential associations with outcome. An additional post hoc objective was to analyse the frequency of behaviours with need for intervention from staff.DESIGN AND SETTING: In a prospective population based cohort study 114 patients with severe traumatic brain injury were assessed at three weeks, three months and one year after injury.MAIN MEASURES: Assessments included clinical examination and standardised instruments. Agitation was assessed with the Agitated Behaviour Scale, the course of recovery by the Rancho Los Amigo Scale and outcome by Glasgow Outcome Scale Extended.RESULTS: Agitation were most common at 3 weeks post injury and 28% (n=68) of the patients showed at least one agitated behaviour requiring intervention from staff. Presence of significant agitation at 3 weeks after injury was not associated with poor outcome. At 3 months agitation was present in 11% (n=90) and apathy in 26 out of 81 assessed patients. At 3 months agitation and apathy were associated with poor outcome at one year.CONCLUSIONS: Most agitated behaviours in the early phase are transient and are not associated with poor outcome. Agitation and apathy are uncommon at three months but when present are associated with poor outcome at one year after injury. In the early phase after a severe traumatic brain injury agitated behaviour in need of interventions from staff occur in a substantial proportion of patients.
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