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Andersson E, Öst M, Dalla K, Zetterberg H, Blennow K, Nellgård B. Acute-Phase Neurofilament Light and Glial Fibrillary Acidic Proteins in Cerebrospinal Fluid Predict Long-Term Outcome After Severe Traumatic Brain Injury. Neurocrit Care 2024:10.1007/s12028-024-01998-0. [PMID: 38769253 DOI: 10.1007/s12028-024-01998-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 04/10/2024] [Indexed: 05/22/2024]
Abstract
BACKGROUND This study investigated trajectory profiles and the association of concentrations of the biomarkers neurofilament light (NfL) and glial fibrillary acidic protein (GFAP) in ventricular cerebrospinal fluid (CSF) with clinical outcome at 1 year and 10-15 years after a severe traumatic brain injury (sTBI). METHODS This study included patients with sTBI at the Neurointensive Care Unit at Sahlgrenska University Hospital, Gothenburg, Sweden. The injury was regarded as severe if patients had a Glasgow Coma Scale ≤ 8 corresponding to Reaction Level Scale ≥ 4. CSF was collected from a ventricular catheter during a 2-week period. Concentrations of NfL and GFAP in CSF were analyzed with enzyme-linked immunosorbent assay. The Glasgow Outcome Scale (GOS) was used to assess the 1-year and 10-15-year outcomes. After adjustment for age and previous neurological diseases, logistic regression was performed for the outcomes GOS 1 (dead) or GOS 2-5 (alive) and GOS 1-3 (poor) or GOS 4-5 (good) versus the independent continuous variables (NfL and GFAP). RESULTS Fifty-three patients with sTBI were investigated; forty-seven adults are presented in the article, and six children (aged 7-18 years) are described in Supplement 1. The CSF concentrations of NfL gradually increased over 2 weeks post trauma, whereas GFAP concentrations peaked on days 3-4. Increasing NfL and GFAP CSF concentrations increased the odds of GOS 1-3 outcome 1 year after trauma (odds ratio [OR] 1.73, 95% confidence interval [CI] 1.07-2.80, p = 0.025; and OR 1.61, 95% CI 1.09-2.37, p = 0.016, respectively). Similarly, increasing CSF concentrations of NfL and GFAP increased the odds for GOS 1-3 outcome 10-15 years after trauma (OR 2.04, 95% CI 1.05-3.96, p = 0.035; and OR 1.60, 95% CI 1.02-2.00, p = 0.040). CONCLUSIONS This study shows that initial high concentrations of NfL and GFAP in CSF are both associated with higher odds for GOS 1-3 outcome 1 year and 10-15 years after an sTBI, implicating its potential usage as a prognostic marker in the future.
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Affiliation(s)
- Emma Andersson
- Department of Anesthesiology and Intensive Care Medicine, Institution of Clinical Sciences, Gothenburg University, Gothenburg, Sweden.
| | - Martin Öst
- Department of Anesthesiology and Intensive Care Medicine, Institution of Clinical Sciences, Gothenburg University, Gothenburg, Sweden
| | - Keti Dalla
- Department of Anesthesiology and Intensive Care Medicine, Institution of Clinical Sciences, Gothenburg University, Gothenburg, Sweden
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, UK
- UK Dementia Research Institute at UCL, London, UK
- Hongkong Center for Neurodegenerative Diseases, Science Park, Hongkong, China
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Bengt Nellgård
- Department of Anesthesiology and Intensive Care Medicine, Institution of Clinical Sciences, Gothenburg University, Gothenburg, Sweden
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Pantelatos RI, Stenberg J, Follestad T, Sandrød O, Einarsen CE, Vik A, Skandsen T. Improvement in Functional Outcome from 6 to 12 Months After Moderate and Severe Traumatic Brain Injury Is Frequent, But May Not Be Detected With the Glasgow Outcome Scale Extended. Neurotrauma Rep 2024; 5:139-149. [PMID: 38435078 PMCID: PMC10908320 DOI: 10.1089/neur.2023.0109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
The aims of this study were (1) to report outcome and change in outcome in patients with moderate and severe traumatic brain injury (mo/sTBI) between 6 and 12 months post-injury as measured by the Glasgow Outcome Scale Extended (GOSE), (2) to explore if demographic/injury-related variables can predict improvement in GOSE score, and (3) to investigate rate of improvement in Disability Rating Scale (DRS) score, in patients with a stable GOSE. All surviving patients ≥16 years of age who were admitted with mo/sTBI (Glasgow Coma Scale [GCS] score ≤13) to the regional trauma center in Central Norway between 2004 and 2019 were prospectively included (n = 439 out of 503 eligible). GOSE and DRS were used to assess outcome. Twelve-months post-injury, 13% with moTBI had severe disability (GOSE 2-4) versus 27% in sTBI, 26% had moderate disability (GOSE 5-6) versus 41% in sTBI and 62% had good recovery (GOSE 7-8) versus 31% in sTBI. From 6 to 12 months post-injury, 27% with moTBI and 32% with sTBI had an improvement, whereas 6% with moTBI and 6% with sTBI had a deterioration in GOSE score. Younger age and higher GCS score were associated with improved GOSE score. Improvement was least frequent for patients with a GOSE score of 3 at 6 months. In patients with a stable GOSE score of 3, an improvement in DRS score was observed in 22 (46%) patients. In conclusion, two thirds and one third of patients with mo/sTBI, respectively, had a good recovery. Importantly, change, mostly improvement, in GOSE score between 6 and 12 months was frequent and argues against the use of 6 months outcome as a time end-point in research. The GOSE does, however, not seem to be sensitive to actual change in function in the lower categories and a combination of outcome measures may be needed to describe the consequences after TBI.
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Affiliation(s)
- Rabea Iris Pantelatos
- Department of Neuromedicine, Movement Science, and Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jonas Stenberg
- Department of Neuromedicine, Movement Science, and Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Clinical Sciences, Danderyd Hospital, Division of Rehabilitation Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Radiology and Nuclear Medicine, Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Turid Follestad
- Clinical Research Unit Central Norway, Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Oddrun Sandrød
- Clinic of Anaesthesia and Intensive Care, Department of Intensive Care Medicine, Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Cathrine Elisabeth Einarsen
- Department of Neuromedicine, Movement Science, and Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Clinic of Rehabilitation, Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Anne Vik
- Department of Neuromedicine, Movement Science, and Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Neuroclinic, Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Toril Skandsen
- Department of Neuromedicine, Movement Science, and Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Clinic of Rehabilitation, Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
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3
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Yu T, Liu X, Sun L, Lv R, Wu J, Wang Q. Predicting Global Functional Outcomes Among Post-traumatic Epilepsy Patients After Moderate-to-Severe Traumatic Brain Injury: Development of a Prognostic Model. Front Neurol 2022; 13:874491. [PMID: 35711257 PMCID: PMC9197334 DOI: 10.3389/fneur.2022.874491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 04/20/2022] [Indexed: 11/16/2022] Open
Abstract
Objective The development of post-traumatic epilepsy (PTE) following traumatic brain injury (TBI) is associated with unfavorable functional outcomes, and the global function of PTE patients might change dynamically overtime. Predicting the long-term functional outcomes of patients with PTE may help to develop accurate rehabilitation programs and improve their quality of life. Based on this, the objective of this study is to use clinical data to derive and validate a model for predicting the functional outcomes of patients with PTE after moderate-to-severe TBI. Methods This study retrospectively analyzed 721 patients with PTE after moderate-to-severe TBI in the Epilepsy Centre, Beijing Tiantan Hospital, from January 2013 to December 2018. All patients had favorable global function as indicated by the Glasgow Outcome Scale-Extended (GOSE) at the time of their first late post-traumatic seizure (PTS) onset, and the 5-year global function after the first late PTS onset was chosen as the principal outcome of interest. To identify possible predictors for the global functional outcomes, univariate and multivariate logistic regression techniques were used. A prognostic model was established using these identified predictors, the internal validation with the bootstrapping method was performed, and the model was then visualized as a graphical score chart. Results The 5-year global functional outcome of 98 (13.59%) patients was unfavorable, and the temporal lobe lesion was found as the strongest predictor of unfavorable outcomes. The final prognostic model also included the following other predictors: gender, age at TBI, multiple injuries, the severity of TBI, and latency of PTE. Discrimination was satisfactory with C-statistic of 0.754 (0.707 – 0.800), the goodness-of-fit test indicated good calibration (P = 0.137), and the C-statistic was 0.726 for internal validation. A graphical score chart was also constructed to provide the probability of an unfavorable 5-year global functional outcomes more readily. Conclusions Clearer treatment strategies are essential to help ameliorate the global functional outcomes of patients with PTE. Our proposed prognostic model has significant potential to be used in the clinic for predicting global functional outcomes among patients with PTE after moderate-to-severe TBI.
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Affiliation(s)
- Tingting Yu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Xiao Liu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Lei Sun
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Ruijuan Lv
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Jianping Wu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Qun Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
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4
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Mostert CQB, Singh RD, Gerritsen M, Kompanje EJO, Ribbers GM, Peul WC, van Dijck JTJM. Long-term outcome after severe traumatic brain injury: a systematic literature review. Acta Neurochir (Wien) 2022; 164:599-613. [PMID: 35098352 DOI: 10.1007/s00701-021-05086-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 12/07/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Expectation of long-term outcome is an important factor in treatment decision-making after severe traumatic brain injury (sTBI). Conclusive long-term outcome data substantiating these decisions is nowadays lacking. This systematic review aimed to provide an overview of the scientific literature on long-term outcome after sTBI. METHODS A systematic search was conducted using PubMed from 2008 to 2020. Studies were included when reporting long-term outcome ≥ 2 years after sTBI (GCS 3-8 or AIS head score ≥ 4), using standardized outcome measures. Study quality and risk of bias were assessed using the QUIPS tool. RESULTS Twenty observational studies were included. Studies showed substantial variation in study objectives and study methodology. GOS-E (n = 12) and GOS (n = 8) were the most frequently used outcome measures. Mortality was reported in 46% of patients (range 18-75%). Unfavourable outcome rates ranged from 29 to 100% and full recovery was seen in 21-27% of patients. Most surviving patients reported SF-36 scores lower than the general population. CONCLUSION Literature on long-term outcome after sTBI was limited and heterogeneous. Mortality and unfavourable outcome rates were high and persisting sequelae on multiple domains common. Nonetheless, a considerable proportion of survivors achieved favourable outcome. Future studies should incorporate standardized multidimensional and temporal long-term outcome measures to strengthen the evidence-base for acute and subacute decision-making. HIGHLIGHTS 1. Expectation of long-term outcome is an important factor in treatment decision-making for patients with severe traumatic brain injury (sTBI). 2. Favourable outcome and full recovery after sTBI are possible, but mortality and unfavourable outcome rates are high. 3. sTBI survivors are likely to suffer from a wide range of long-term consequences, underscoring the need for long-term and multi-modality outcome assessment in future studies. 4. The quality of the scientific literature on long-term outcome after sTBI can and should be improved to advance treatment decision-making.
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Affiliation(s)
- Cassidy Q B Mostert
- University Neurosurgical Center Holland, Leiden University Medical Center & Haaglanden Medical Center & Haga Teaching Hospital, Leiden The Hague, Albinusdreef 2, J-11-R-83, 2333 ZA, Leiden, The Netherlands.
| | - Ranjit D Singh
- University Neurosurgical Center Holland, Leiden University Medical Center & Haaglanden Medical Center & Haga Teaching Hospital, Leiden The Hague, Albinusdreef 2, J-11-R-83, 2333 ZA, Leiden, The Netherlands
| | - Maxime Gerritsen
- University Neurosurgical Center Holland, Leiden University Medical Center & Haaglanden Medical Center & Haga Teaching Hospital, Leiden The Hague, Albinusdreef 2, J-11-R-83, 2333 ZA, Leiden, The Netherlands
| | - Erwin J O Kompanje
- Department of Intensive Care Medicine, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Gerard M Ribbers
- Department of Rehabilitation Medicine, Erasmus Medical Centre, Rotterdam, The Netherlands
- Rijndam Rehabilitation, Rotterdam, The Netherlands
| | - Wilco C Peul
- University Neurosurgical Center Holland, Leiden University Medical Center & Haaglanden Medical Center & Haga Teaching Hospital, Leiden The Hague, Albinusdreef 2, J-11-R-83, 2333 ZA, Leiden, The Netherlands
| | - Jeroen T J M van Dijck
- University Neurosurgical Center Holland, Leiden University Medical Center & Haaglanden Medical Center & Haga Teaching Hospital, Leiden The Hague, Albinusdreef 2, J-11-R-83, 2333 ZA, Leiden, The Netherlands
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Ruet A, Bayen E, Jourdan C, Vallat-Azouvi C, Azerad S, Grimaldi L, Meaude L, Charanton J, Azouvi P. Potential for recovery between 4 and 8 years after a severe traumatic brain injury. Data from the PariS-TBI longitudinal study. Ann Phys Rehabil Med 2020; 64:101422. [PMID: 32763484 DOI: 10.1016/j.rehab.2020.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 06/24/2020] [Accepted: 07/05/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Severe traumatic brain injury (TBI) is a leading cause of complex and persistent disability. Yet, long-term change in global functioning and determinants of this change remain unclear. OBJECTIVES This study aimed to assess change in global functioning in the long-term after severe TBI and factors associated with the change. METHODS This was a prospective observational study of an inception cohort of adults with severe TBI in the Paris area (PariS-TBI). Outcome was assessed at 1, 4 and 8 years post-injury. For the included participants (n=257), change in global outcome between 4 and 8 years was evaluated with the Glasgow Outcome Scale Extended (GOSE) score, and its association with pre-injury, injury-related and post-injury variables was tested with univariate and multivariable analyses. RESULTS More than half of the 73 participants evaluated at both 4 and 8 years showed global improvement (of at least one point) in GOSE score and an improvement in mood, executive function, and subjective complaints. On univariate analysis, none of the pre-injury, injury or post-injury variables were associated with GOSE score change between 4 and 8 years, except for GOSE score at 4 years (rho=-0.24, P=0.04). On multivariable analysis, probability of increased GOSE score was associated with more years of education (odds ratio 1.18 [95% confidence interval 1.02-1.37], P=0.03). The change in GOSE score was significantly correlated with change in Hospital Anxiety Depression Scale score between 4 and 8 years (rho=-0.42, P<0.001). CONCLUSIONS Most participants with severe TBI in the present sample showed a late improvement (4 to 8 years post-injury) in global functioning. Of the socio-demographic and injury-related factors, only more years of education was associated with improvement in global functioning. Decreased anxiety and depression symptoms were associated with improved global functioning. Targeting interventions to enhance resilience may be the most effective in the long-term after severe TBI.
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Affiliation(s)
| | - Eléonore Bayen
- Département de rééducation neurologique, faculté de médecine, hôpital Pitié-Salpêtrière, Sorbonne Université, AP-HP, Paris, France
| | - Claire Jourdan
- Département de médecine physique et de réadaptation, CHU de Lapeyronie, Montpellier, France
| | - Claire Vallat-Azouvi
- Antenne UEROS-SAMSAH92-UGECAM IDF, hôpital Raymond-Poincaré, Garches, France; HANDIReSP, EA4047, université de Versailles Saint-Quentin, Montigny-Le-Bretonneux, France; EA 2027, laboratoire de psychopathologie et neuropsychologie, Paris, France
| | - Sylvie Azerad
- Unité de recherche clinique, hôpital Ambroise-Paré, AP-HP, Boulogne, France
| | - Lamiae Grimaldi
- Unité de recherche clinique, hôpital Ambroise-Paré, AP-HP, Boulogne, France; LA-SER and Pasteur Institute (Pharmacoepidemiology and Infectious Diseases Unit), Paris, France
| | - Layide Meaude
- Unité de recherche clinique, hôpital Ambroise-Paré, AP-HP, Boulogne, France
| | - James Charanton
- Centre ressources francilien du traumatisme crânien (CRFTC), Paris, France
| | - Philippe Azouvi
- HANDIReSP, EA4047, université de Versailles Saint-Quentin, Montigny-Le-Bretonneux, France; Service de médecine physique et réadaptation, hôpital Raymond-Poincaré, AP-HP, Garches, France
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Forslund MV, Perrin PB, Røe C, Sigurdardottir S, Hellstrøm T, Berntsen SA, Lu J, Arango-Lasprilla JC, Andelic N. Global Outcome Trajectories up to 10 Years After Moderate to Severe Traumatic Brain Injury. Front Neurol 2019; 10:219. [PMID: 30923511 PMCID: PMC6426767 DOI: 10.3389/fneur.2019.00219] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/20/2019] [Indexed: 12/31/2022] Open
Abstract
Aims: Based on important predictors, global functional outcome after traumatic brain injury (TBI) may vary significantly over time. This study sought to: (1) describe changes in the Glasgow Outcome Scale-Extended (GOSE) score in survivors of moderate to severe TBI, (2) examine longitudinal GOSE trajectories up to 10 years after injury, and (3) investigate predictors of these trajectories based on socio-demographic and injury characteristics. Methods: Socio-demographic and injury characteristics of 97 TBI survivors aged 16-55 years were recorded at baseline. GOSE was used as a measure of TBI-related global outcome and assessed at 1-, 2-, 5-, and 10-year follow-ups. Hierarchical linear models were used to examine global outcomes over time and whether those outcomes could be predicted by: time, time*time, sex, age, partner relationship status, education, employment pre-injury, occupation, cause of injury, acute Glasgow Coma Scale score, length of post-traumatic amnesia (PTA), CT findings, and Injury Severity Score (ISS), as well as the interactions between each of the significant predictors and time*time. Results: Between 5- and 10-year follow-ups, 37% had deteriorated, 7% had improved, and 56% showed no change in global outcome. Better GOSE trajectories were predicted by male gender (p = 0.013), younger age (p = 0.012), employment at admission (p = 0.012), white collar occupation (p = 0.014), and shorter PTA length (p = 0.001). The time*time*occupation type interaction effect (p = 0.001) identified different trajectory slopes between survivors in white and blue collar occupations. The time*time*PTA interaction effect (p = 0.023) identified a more marked increase and subsequent decrease in functional level among survivors with longer PTA duration. Conclusion: A larger proportion of survivors experienced deterioration in GOSE scores over time, supporting the concept of TBI as a chronic health condition. Younger age, pre-injury employment, and shorter PTA duration are important prognostic factors for better long-term global outcomes, supporting the existing literature, whereas male gender and white collar occupation are vaguer as prognostic factors. This information suggests that more intensive and tailored rehabilitation programs may be required to counteract a negative global outcome development in survivors with predicted worse outcome and to meet their long-term changing needs.
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Affiliation(s)
- Marit V Forslund
- Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway
| | - Paul B Perrin
- Department of Psychology, Virginia Commonwealth University, Richmond, VA, United States
| | - Cecilie Røe
- Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | - Torgeir Hellstrøm
- Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway
| | - Svein A Berntsen
- Department of Physical Medicine and Rehabilitation, Sørlandet Hospital, Kristiansand, Norway
| | - Juan Lu
- Department of Family Medicine and Population Health, Division of Epidemiology, Virginia Commonwealth University, Richmond, VA, United States.,Faculty of Medicine, Institute of Health and Society, Research Centre for Habilitation and Rehabilitation Models and Services (CHARM), University of Oslo, Oslo, Norway
| | - Juan Carlos Arango-Lasprilla
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain.,BioCruces Health Research Institute, Cruces University Hospital Barakaldo, Barakaldo, Spain
| | - Nada Andelic
- Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, Institute of Health and Society, Research Centre for Habilitation and Rehabilitation Models and Services (CHARM), University of Oslo, Oslo, Norway
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Abstract
Traumatic brain injury (TBI) is the cause for long-term disability in more than 3 million patients in the US alone, with chronic pain being the most frequently reported complain. To date, predisposing mechanisms for chronic pain in TBI patients are largely unknown. Psychological disorders, including post-traumatic stress disorder, depression and anxiety following TBI are commonly reported comorbidities to post-traumatic pain. Long term consequences can be debilitating and affect quality of life even when the injury is mild. In this review, we present the most commonly reported chronic pain conditions across the spectrum of severity of TBI, mainly focusing on mild TBI. We discuss chronic post- traumatic headaches, widespread pain as well as post-traumatic central pain. We discuss pain in the context of injury severity and military versus civilian populations. We are only starting to understand the biological mechanisms behind post-traumatic pain and associated psychological distress following TBI, with genetic, biochemical and imaging studies pointing to the dopaminergic, neurotrophic factors and the role of Apolipoprotein. Physiological and neurological mechanisms are proposed to partially explain this interaction between post-traumatic pain and psychological distress. Nevertheless, the evidence for the role of structural brain damage remains incomplete and to a large extent debatable, as it is still difficult to establish clear causality between brain trauma and chronic pain. Finally, general aspects of management of chronic pain post-TBI are addressed.
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