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Gerges PRA, Moore L, Léger C, Lauzier F, Shemilt M, Zarychanski R, Scales DC, Burns KEA, Bernard F, Zygun D, Neveu X, Turgeon AF. Intensity of care and withdrawal of life-sustaining therapies in severe traumatic brain injury patients: a post-hoc analysis of a multicentre retrospective cohort study. Can J Anaesth 2018; 65:996-1003. [PMID: 29949093 DOI: 10.1007/s12630-018-1171-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 03/20/2018] [Accepted: 04/25/2018] [Indexed: 11/24/2022] Open
Abstract
PURPOSE The intensity of care provided to critically ill patients has been shown to be associated with mortality. In patients with traumatic brain injury (TBI), specialized neurocritical care is often required, but whether it affects clinically significant outcomes is unknown. We aimed to determine the association of the intensity of care on mortality and the incidence of withdrawal of life-sustaining therapies in critically ill patients with severe TBI. METHODS We conducted a post hoc analysis of a multicentre retrospective cohort study of critically ill adult patients with severe TBI. We defined the intensity of care as a daily cumulative sum of interventions during the intensive care unit stay. Our outcome measures were all-cause hospital mortality and the incidence of withdrawal of life-sustaining therapies. RESULTS Seven hundred sixteen severe TBI patients were included in our study. Most were male (77%) with a mean (standard deviation) age of 42 (20.5) yr and a median [interquartile range] Glasgow Coma Scale score of 3 [3-6]. Our results showed an association between the intensity of care and mortality (hazard ratio [HR], 0.69; 95% confidence interval [CI], 0.63 to 0.74) and the incidence of withdrawal of life-sustaining therapy (HR, 0.73; 95% CI, 0.67 to 0.79). CONCLUSION In general, more intense care was associated with fewer deaths and a lower incidence of withdrawal of life-sustaining therapies in critically ill patients with severe TBI.
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Affiliation(s)
- Peter R A Gerges
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Université Laval, 1401, 18e rue, local Z-204, Québec City, QC, G1J 1Z4, Canada
| | - Lynne Moore
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Université Laval, 1401, 18e rue, local Z-204, Québec City, QC, G1J 1Z4, Canada.,Department of Social and Preventive Medicine, Université Laval, Québec City, QC, Canada
| | - Caroline Léger
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Université Laval, 1401, 18e rue, local Z-204, Québec City, QC, G1J 1Z4, Canada
| | - François Lauzier
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Université Laval, 1401, 18e rue, local Z-204, Québec City, QC, G1J 1Z4, Canada.,Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Université Laval, Québec City, QC, Canada.,Department of Medicine, Université Laval, Québec City, QC, Canada
| | - Michèle Shemilt
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Université Laval, 1401, 18e rue, local Z-204, Québec City, QC, G1J 1Z4, Canada
| | - Ryan Zarychanski
- Department of Internal Medicine, Sections of Critical Care Medicine, Haematology and of Medical Oncology, University of Manitoba, Winnipeg, MB, Canada
| | - Damon C Scales
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Karen E A Burns
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Li Ka Shing Knowledge Institute, St-Michaels Hospital, Toronto, ON, Canada
| | - Francis Bernard
- Department of Internal Medicine, Université de Montréal, Montréal, QC, Canada
| | - David Zygun
- Department of Critical Care Medicine, University of Alberta, Edmonton, AB, Canada
| | - Xavier Neveu
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Université Laval, 1401, 18e rue, local Z-204, Québec City, QC, G1J 1Z4, Canada
| | - Alexis F Turgeon
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Research Unit, Trauma - Emergency - Critical Care Medicine, Université Laval, 1401, 18e rue, local Z-204, Québec City, QC, G1J 1Z4, Canada. .,Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Université Laval, Québec City, QC, Canada.
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152
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Leblanc G, Boutin A, Shemilt M, Lauzier F, Moore L, Potvin V, Zarychanski R, Archambault P, Lamontagne F, Léger C, Turgeon AF. Incidence and impact of withdrawal of life-sustaining therapies in clinical trials of severe traumatic brain injury: A systematic review. Clin Trials 2018; 15:398-412. [PMID: 29865897 DOI: 10.1177/1740774518771233] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background Most deaths following severe traumatic brain injury follow decisions to withdraw life-sustaining therapies. However, the incidence of the withdrawal of life-sustaining therapies and its potential impact on research data interpretation have been poorly characterized. The aim of this systematic review was to assess the reporting and the impact of withdrawal of life-sustaining therapies in randomized clinical trials of patients with severe traumatic brain injury. Methods We searched Medline, Embase, Cochrane Central, BIOSIS, and CINAHL databases and references of included trials. All randomized controlled trials published between January 2002 and August 2015 in the six highest impact journals in general medicine, critical care medicine, and neurocritical care (total of 18 journals) were considered for eligibility. Randomized controlled trials were included if they enrolled adult patients with severe traumatic brain injury (Glasgow Coma Scale ≤ 8) and reported data on mortality. Our primary objective was to assess the proportion of trials reporting the withdrawal of life-sustaining therapies in a publication. Our secondary objectives were to describe the overall mortality rate, the proportion of deaths following the withdrawal of life-sustaining therapies, and to assess the impact of the withdrawal of life-sustaining therapies on trial results. Results From 5987 citations retrieved, we included 41 randomized trials (n = 16,364, ranging from 11 to 10,008 patients). Overall mortality was 23% (range = 3%-57%). Withdrawal of life-sustaining therapies was reported in 20% of trials (8/41, 932 patients in trials) and the crude number of deaths due to the withdrawal of life-sustaining therapies was reported in 17% of trials (7/41, 884 patients in trials). In these trials, 63% of deaths were associated with the withdrawal of life-sustaining therapies (105/168). An analysis carried out by imputing a 4% differential rate in instances of withdrawal of life-sustaining therapies between study groups yielded different results and conclusions in one third of the trials. Conclusion Data on the withdrawal of life-sustaining therapies are incompletely reported in randomized controlled trials of patients with severe traumatic brain injury. Given the high proportion of deaths due to the withdrawal of life-sustaining therapies in severe traumatic brain injury patients, and the potential of this medical decision to influence the results of clinical trials, instances of withdrawal of life-sustaining therapies should be systematically reported in clinical trials in this group of patients.
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Affiliation(s)
- Guillaume Leblanc
- 1 Population Health and Optimal Health Practices Research Unit, Trauma-Emergency-Critical Care Medicine, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,2 Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Amélie Boutin
- 3 Department of Social and Preventive Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Michèle Shemilt
- 1 Population Health and Optimal Health Practices Research Unit, Trauma-Emergency-Critical Care Medicine, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - François Lauzier
- 1 Population Health and Optimal Health Practices Research Unit, Trauma-Emergency-Critical Care Medicine, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,2 Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada.,4 Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Lynne Moore
- 1 Population Health and Optimal Health Practices Research Unit, Trauma-Emergency-Critical Care Medicine, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,3 Department of Social and Preventive Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Véronique Potvin
- 2 Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Ryan Zarychanski
- 5 Department of Internal Medicine, Sections of Critical Care Medicine, Haematology and Medical Oncology, Faculty of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Patrick Archambault
- 1 Population Health and Optimal Health Practices Research Unit, Trauma-Emergency-Critical Care Medicine, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,2 Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada.,6 Department of Family and Emergency Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - François Lamontagne
- 7 Department of Medicine, Faculty of Medicine, University of Sherbrooke, Sherbrooke, QC, Canada.,8 Centre de recherche du CHU de Sherbrooke, Sherbrooke, QC, Canada
| | - Caroline Léger
- 1 Population Health and Optimal Health Practices Research Unit, Trauma-Emergency-Critical Care Medicine, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Alexis F Turgeon
- 1 Population Health and Optimal Health Practices Research Unit, Trauma-Emergency-Critical Care Medicine, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,2 Division of Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Université Laval, Québec, QC, Canada
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153
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Barea-Mendoza JA, Chico-Fernández M, Sánchez-Casado M, Molina-Díaz I, Quintana-Díaz M, Jiménez-Moragas JM, Pérez-Bárcena J, Llompart-Pou JA. Predicción de la supervivencia en pacientes traumáticos ancianos: comparación entre la metodología TRISS y el Geriatric Trauma Outcome Score. Cir Esp 2018; 96:357-362. [DOI: 10.1016/j.ciresp.2018.02.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/01/2018] [Accepted: 02/11/2018] [Indexed: 10/17/2022]
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154
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Lappin JM, Darke S, Farrell M. Methamphetamine use and future risk for Parkinson's disease: Evidence and clinical implications. Drug Alcohol Depend 2018; 187:134-140. [PMID: 29665491 DOI: 10.1016/j.drugalcdep.2018.02.032] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/21/2018] [Accepted: 02/24/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Methamphetamine use has been posited to be a risk factor for the development of Parkinson's disease (PD) and parkinsonism. The clinical implications of a potential association between methamphetamine use and PD are considered. METHODS A review of methamphetamine and PD and parkinsonism was conducted, including evidence from animal models, clinical and population studies. RESULTS There is biological plausibility to a link between methamphetamine use and PD. Though clinical and epidemiological evidence in this area is scant, a number of studies suggest that methamphetamine is associated with a moderately increased risk of PD and parkinsonism, and may also lead to premature onset of PD. The long lag time between exposure to methamphetamine and onset of PD, the potential for recovery from neurotoxic effects, and tobacco smoking each may attenuate the association. Individual and drug use characteristics that may modulate a user's risk remain poorly understood. CONCLUSIONS The use of methamphetamine may be an initiating event in the development of PD and parkinsonism, in addition to other risk factors that a given individual may hold. Clinicians should be vigilant to signs of prodromal and emerging PD among methamphetamine users. In individuals with premature onset illness, information on current or prior exposure to methamphetamine should be sought.
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Affiliation(s)
- Julia M Lappin
- National Drug and Alcohol Research Centre, University of New South Wales, Sydney, Australia; School of Psychiatry, University of New South Wales, Sydney, Australia.
| | - Shane Darke
- National Drug and Alcohol Research Centre, University of New South Wales, Sydney, Australia
| | - Michael Farrell
- National Drug and Alcohol Research Centre, University of New South Wales, Sydney, Australia
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155
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Irimia A, Van Horn JD, Vespa PM. Cerebral microhemorrhages due to traumatic brain injury and their effects on the aging human brain. Neurobiol Aging 2018; 66:158-164. [PMID: 29579686 PMCID: PMC5924627 DOI: 10.1016/j.neurobiolaging.2018.02.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 02/24/2018] [Accepted: 02/27/2018] [Indexed: 01/08/2023]
Abstract
Although cerebral microbleeds (CMBs) are frequently associated with traumatic brain injury (TBI), their effects on clinical outcome after TBI remain controversial and poorly understood, particularly in older adults. Here we (1) highlight major challenges and opportunities associated with studying the effects of TBI-mediated CMBs; (2) review the evidence on their potential effects on cognitive and neural outcome as a function of age at injury; and (3) suggest priorities for future research on understanding the clinical implications of CMBs. Although TBI-mediated CMBs are likely distinct from those due to cerebral amyloid angiopathy or other neurodegenerative diseases, the effects of these 2 CMB types on brain function may share common features. Furthermore, in older TBI victims, the incidence of TBI-mediated CMBs may approximate that of cerebral amyloid angiopathy-related CMBs, and thus warrants detailed study. Because the alterations effected by CMBs on brain structure and function are both unique and age-dependent, it seems likely that novel, age-tailored therapeutic approaches are necessary for the adequate clinical interpretation and treatment of these ubiquitous and underappreciated TBI sequelae.
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Affiliation(s)
- Andrei Irimia
- Ethel Percy Andrus Gerontology Center, USC Leonard Davis School of Gerontology, University of Southern California, Los Angeles CA, USA.
| | - John D Van Horn
- USC Mark & Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine of USC, Los Angeles, CA, USA
| | - Paul M Vespa
- Departments of Neurosurgery and Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
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156
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Persistent Infiltration and Impaired Response of Peripherally-Derived Monocytes after Traumatic Brain Injury in the Aged Brain. Int J Mol Sci 2018; 19:ijms19061616. [PMID: 29848996 PMCID: PMC6032263 DOI: 10.3390/ijms19061616] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/21/2018] [Accepted: 05/25/2018] [Indexed: 12/29/2022] Open
Abstract
Traumatic brain injury (TBI) is a leading cause for neurological disabilities world-wide. TBI occurs most frequently among the elderly population, and elderly TBI survivors suffer from reduced recovery and poorer quality of life. The effect of age on the pathophysiology of TBI is still poorly understood. We previously established that peripherally-derived monocytes (CCR2+) infiltrate the injured brain and contribute to chronic TBI-induced cognitive deficits in young animals. Furthermore, age was shown to amplify monocyte infiltration acutely after injury. In the current study, we investigated the impact of age on the subchronic response of peripherally-derived monocytes (CD45hi; CCR2+) and their role in the development of chronic cognitive deficits. In the aged brain, there was a significant increase in the number of peripherally-derived monocytes after injury compared to young, injured animals. The infiltration rate of peripherally-derived monocytes remained elevated subchronically and corresponded with enhanced expression of CCR2 chemotactic ligands. Interestingly, the myeloid cell populations observed in injured aged brains had impaired anti-inflammatory responses compared to those in young animals. Additionally, in the aged animals, there was an expansion of the blood CCR2+ monocyte population after injury that was not present in the young animals. Importantly, knocking out CCR2 to inhibit infiltration of peripherally-derived monocytes prevented chronic TBI-induced spatial memory deficits in the aged mice. Altogether, these results demonstrate the critical effects of age on the peripherally-derived monocyte response during the progression of TBI pathophysiology.
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157
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Parker SL, Saxena M, Gowardman J, Lipman J, Myburgh J, Roberts JA. Population pharmacokinetics of intravenous paracetamol in critically ill patients with traumatic brain injury. J Crit Care 2018; 47:15-20. [PMID: 29883885 DOI: 10.1016/j.jcrc.2018.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/23/2018] [Accepted: 05/28/2018] [Indexed: 11/29/2022]
Abstract
PURPOSE High-dose paracetamol (6 g/day) is a low-cost intervention that may prevent pyrexia. The purpose of this study was to describe the pharmacokinetics of high-dose intravenous paracetamol, in patients with traumatic brain injury (TBI). MATERIALS AND METHODS A clinical pharmacokinetic study in adult patients with TBI was performed as a sub-study to a prospective, phase 2B, randomized placebo-controlled study (PARITY). Patients received 1 g of intravenous paracetamol or 0.9% sodium chloride every 4 h for 72 h. RESULTS All patients were included in the pharmacokinetic sub-study. The mean age, weight and area under the concentration-time curve for the sampled dosing interval were 34.5 yr, 82.3 kg and 39.9 ± 19.8 mg.h/L, respectively. The concentrations observed in the study patients were well below the threshold of toxicity and there was no evidence of accumulation of paracetamol. Paracetamol clearance was found to be high and variable (25.7 L.h-1, coefficient of variation (CV) 40.9%), and a wide range of volume of distribution observed (27.6 L, CV 30.6%). A relationship between lower Glasgow coma scores and higher clearance of paracetamol was observed. CONCLUSION Due to altered pharmacokinetics, patients experiencing severe TBI may require a higher dose of paracetamol to achieve drug exposure that results in preventing pyrexia.
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Affiliation(s)
- Suzanne L Parker
- The University of Queensland, UQ Centre for Clinical Research, Brisbane, Australia.
| | - Manoj Saxena
- Department of Intensive Care Medicine, St. George Hospital Clinical School, University of New South Wales, Australia
| | - John Gowardman
- Department of Intensive Care Medicine, Royal Brisbane & Women's Hospital, Brisbane, Australia
| | - Jeffrey Lipman
- The University of Queensland, UQ Centre for Clinical Research, Brisbane, Australia; Department of Intensive Care Medicine, Royal Brisbane & Women's Hospital, Brisbane, Australia; Faculty of Health, Queensland University of Technology, Brisbane, Australia
| | - John Myburgh
- Department of Intensive Care Medicine, St. George Hospital Clinical School, University of New South Wales, Australia
| | - Jason A Roberts
- The University of Queensland, UQ Centre for Clinical Research, Brisbane, Australia; Department of Intensive Care Medicine, Royal Brisbane & Women's Hospital, Brisbane, Australia; Centre of Translational Anti-infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, Australia; Department of Pharmacy, Royal Brisbane & Women's Hospital, Brisbane, Australia
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158
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Christie S, Chan V, Mollayeva T, Colantonio A. Systematic review of rehabilitation intervention outcomes of adult and paediatric patients with infectious encephalitis. BMJ Open 2018; 8:e015928. [PMID: 29764868 PMCID: PMC5961616 DOI: 10.1136/bmjopen-2017-015928] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 03/21/2018] [Accepted: 04/03/2018] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE Although a range of rehabilitation interventions have been applied to restore function after infectious encephalitis, there is a lack of literature summarising the benefits of these interventions. This systematic review aims to synthesise current scientific knowledge on outcome measures following rehabilitative interventions among children and adults with infectious encephalitis, with a specific focus on the influence of the age, sex, baseline status and intervention type. SEARCH STRATEGY Five scholarly databases (MEDLINE, Embase, PsycINFO, CINAHL and Cochrane Central Register of Controlled Trials), three sources of grey literature (Google, Google Scholar and Grey Matters) and reference lists of included publications were systematically searched. Literature published before 15 December 2017 and focused on patients with infectious encephalitis in any rehabilitation setting were included. Quality assessment was completed using the Downs and Black rating scale. RESULTS Of the 12 737 reference titles screened, 20 studies were included in this review. All of the studies had sample sizes of less than 25 patients and received a score of less than 15 out of 31 points on the Downs and Black rating scale. Findings showed a variety of interventions has been applied to alleviate sequelae from infectious encephalitis, including using cognitive therapy (nine studies), behavioural therapy (five studies), physical therapy (two studies) or two or more therapies (four studies). There was inconclusive evidence on the effect of sex, age and baseline functional abilities on outcomes. Due to clinical and methodological heterogeneity between studies, meta-analyses were not performed. CONCLUSION Evidence suggests the potential for a beneficial effect of rehabilitation interventions in patients with infectious encephalitis. Future research is required to identify all effect modifiers and to determine the effect of time in the natural course of recovery. An enhanced set of known effect modifiers will support the process of future evaluation of a client-centred rehabilitation intervention. TRIAL REGISTRATION NUMBER CRD42015029217.
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Affiliation(s)
- Shanice Christie
- Acquired Brain Injury Research Lab, University of Toronto, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Vincy Chan
- Acquired Brain Injury Research Lab, University of Toronto, Toronto, Ontario, Canada
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada
| | - Tatyana Mollayeva
- Acquired Brain Injury Research Lab, University of Toronto, Toronto, Ontario, Canada
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada
| | - Angela Colantonio
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada
- Department of Occupational Science and Occupational Therapy, University of Toronto, Toronto, Ontario, Canada
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159
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Kiwanuka O, Bellander BM, Hånell A. The case for introducing pre-registered confirmatory pharmacological pre-clinical studies. J Cereb Blood Flow Metab 2018; 38:749-754. [PMID: 29480040 PMCID: PMC5987941 DOI: 10.1177/0271678x18760109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
When evaluating the design of pre-clinical studies in the field of traumatic brain injury, we found substantial differences compared to phase III clinical trials, which in part may explain the difficulties in translating promising experimental drugs into approved treatments. By using network analysis, we also found cases where a large proportion of the studies evaluating a pre-clinical treatment was performed by inter-related researchers, which is potentially problematic. Subjecting all pre-clinical trials to the rigor of a phase III clinical trial is, however, likely not practically achievable. Instead, we repeat the call for a distinction to be made between exploratory and confirmatory pre-clinical studies.
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Affiliation(s)
- Olivia Kiwanuka
- Department of Clinical Neuroscience, 97092 Karolinska Institute , Solna, Sweden
| | | | - Anders Hånell
- Department of Clinical Neuroscience, 97092 Karolinska Institute , Solna, Sweden
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160
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Murray GD, Brennan PM, Teasdale GM. Simplifying the use of prognostic information in traumatic brain injury. Part 2: Graphical presentation of probabilities. J Neurosurg 2018; 128:1621-1634. [PMID: 29631517 DOI: 10.3171/2017.12.jns172782] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Clinical features such as those included in the Glasgow Coma Scale (GCS) score, pupil reactivity, and patient age, as well as CT findings, have clear established relationships with patient outcomes due to neurotrauma. Nevertheless, predictions made from combining these features in probabilistic models have not found a role in clinical practice. In this study, the authors aimed to develop a method of displaying probabilities graphically that would be simple and easy to use, thus improving the usefulness of prognostic information in neurotrauma. This work builds on a companion paper describing the GCS-Pupils score (GCS-P) as a tool for assessing the clinical severity of neurotrauma. METHODS Information about early GCS score, pupil response, patient age, CT findings, late outcome according to the Glasgow Outcome Scale, and mortality were obtained at the individual adult patient level from the CRASH (Corticosteroid Randomisation After Significant Head Injury; n = 9045) and IMPACT (International Mission for Prognosis and Clinical Trials in TBI; n = 6855) databases. These data were combined into a pooled data set for the main analysis. Logistic regression was first used to model the combined association between the GCS-P and patient age and outcome, following which CT findings were added to the models. The proportion of variability in outcomes "explained" by each model was assessed using Nagelkerke's R2. RESULTS The authors observed that patient age and GCS-P have an additive effect on outcome. The probability of mortality 6 months after neurotrauma is greater with increasing age, and for all age groups the probability of death is greater with decreasing GCS-P. Conversely, the probability of favorable recovery becomes lower with increasing age and lessens with decreasing GCS-P. The effect of combining the GCS-P with patient age was substantially more informative than the GCS-P, age, GCS score, or pupil reactivity alone. Two-dimensional charts were produced displaying outcome probabilities, as percentages, for 5-year increments in age between 15 and 85 years, and for GCS-Ps ranging from 1 to 15; it is readily seen that the movement toward combinations at the top right of the charts reflects a decreasing likelihood of mortality and an increasing likelihood of favorable outcome. Analysis of CT findings showed that differences in outcome are very similar between patients with or without a hematoma, absent cisterns, or subarachnoid hemorrhage. Taken in combination, there is a gradation in risk that aligns with increasing numbers of any of these abnormalities. This information provides added value over age and GCS-P alone, supporting a simple extension of the earlier prognostic charts by stratifying the original charts in the following 3 CT groupings: none, only 1, and 2 or more CT abnormalities. CONCLUSIONS The important prognostic features in neurotrauma can be brought together to display graphically their combined effects on risks of death or on prospects for independent recovery. This approach can support decision making and improve communication of risk among health care professionals, patients, and their relatives. These charts will not replace clinical judgment, but they will reduce the risk of influences from biases.
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Affiliation(s)
- Gordon D Murray
- 1Usher Institute of Population Health Sciences and Informatics and
| | - Paul M Brennan
- 2Centre for Clinical Brain Sciences, University of Edinburgh; and
| | - Graham M Teasdale
- 3Institute of Health and Wellbeing, University of Glasgow, United Kingdom
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Tollefsen MH, Vik A, Skandsen T, Sandrød O, Deane SF, Rao V, Moen KG. Patients with Moderate and Severe Traumatic Brain Injury: Impact of Preinjury Platelet Inhibitor or Warfarin Treatment. World Neurosurg 2018. [PMID: 29524716 DOI: 10.1016/j.wneu.2018.02.167] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE We aimed to examine the effect of preinjury antithrombotic medication on clinical and radiologic neuroworsening in traumatic brain injury (TBI) and study the effect on outcome. METHODS A total of 184 consecutive patients ≥50 years old with moderate and severe TBI admitted to a level 1 trauma center were included. Neuroworsening was assessed clinically by using the Glasgow Coma Scale (GCS) score and radiologically by using the Rotterdam CT score on repeated time points. Functional outcome was assessed with the Glasgow Outcome Scale Extended 6 months after injury. RESULTS The platelet inhibitor group (mean age, 77.3 years; n = 43) and the warfarin group (mean age, 73.2 years; n = 20) were significantly older than the nonuser group (mean age, 63.7 years; n = 121; P ≤ 0.001). In the platelet inhibitor group 74% and in the warfarin group, 85% were injured by falls. Platelet inhibitors were not significantly associated with clinical or radiologic neuroworsening (P = 0.37-1.00), whereas warfarin increased the frequency of worsening in GCS score (P = 0.001-0.028) and Rotterdam CT score (P = 0.004). In-hospital mortality was higher in the platelet inhibitor group (28%; P = 0.030) and the warfarin group (50%; P < 0.001) compared with the nonuser group (13%). Platelet inhibitors did not predict mortality or worse outcome after adjustment for age, preinjury disability, GCS score, and Rotterdam CT score, whereas warfarin predicted both mortality and worse outcome. CONCLUSIONS In this study of patients with moderate and severe TBI, preinjury platelet inhibitors did not cause neuroworsening or predict higher mortality or worse outcome. In contrast, preinjury warfarin caused neuroworsening and was an independent risk factor for mortality and worse outcome at 6 months. Hence, fall prevention and liberal use of computed tomography examinations is important in this patient group.
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Affiliation(s)
- Marie Hexeberg Tollefsen
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Anne Vik
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Toril Skandsen
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Physical Medicine and Rehabilitation, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Oddrun Sandrød
- Department of Anesthesiology and Intensive Care Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Susan Frances Deane
- Department of Radiology and Nuclear Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Vidar Rao
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Kent Gøran Moen
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Medical Imaging, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway.
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162
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Sun M, McDonald SJ, Brady RD, O'Brien TJ, Shultz SR. The influence of immunological stressors on traumatic brain injury. Brain Behav Immun 2018; 69:618-628. [PMID: 29355823 DOI: 10.1016/j.bbi.2018.01.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 01/13/2018] [Accepted: 01/14/2018] [Indexed: 12/15/2022] Open
Abstract
Traumatic brain injury (TBI) is a leading cause of death and disability worldwide, and typically involves a robust immune response. Although a great deal of preclinical research has been conducted to identify an effective treatment, all phase III clinical trials have been unsuccessful to date. These translational shortcomings are in part due to a failure to recognize and account for the heterogeneity of TBI, including how extracranial factors can influence the aftermath of TBI. For example, most preclinical studies have utilized isolated TBI models in young adult males, while clinical trials typically involve highly heterogeneous patient populations (e.g., different mechanisms of injury, a range of ages, presence of polytrauma or infection). This paper will review the current, albeit limited literature related to how TBI is affected by common concomitant immunological stressors. In particular, discussion will focus on whether extracranial trauma (i.e., polytrauma), infection, and age/immunosenescence can influence TBI pathophysiology, and thereby may result in a different brain injury than what would have occurred in an isolated TBI. It is concluded that these immunological stressors are all likely to be TBI modifiers that should be further studied and could impact translational treatment strategies.
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Affiliation(s)
- Mujun Sun
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC 3052, Australia
| | - Stuart J McDonald
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC 3086, Australia
| | - Rhys D Brady
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC 3052, Australia; Departments of Neuroscience and Medicine, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Terence J O'Brien
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC 3052, Australia; Departments of Neuroscience and Medicine, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Sandy R Shultz
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, VIC 3052, Australia; Departments of Neuroscience and Medicine, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia.
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163
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Prasad GL, Anmol N, Menon GR. Outcome of Traumatic Brain Injury in the Elderly Population: A Tertiary Center Experience in a Developing Country. World Neurosurg 2018; 111:e228-e234. [DOI: 10.1016/j.wneu.2017.12.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 12/04/2017] [Accepted: 12/08/2017] [Indexed: 12/11/2022]
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164
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Hanko M, Richterova R, Kolarovszki B. Efficiency and Limitations of Decompressive Craniectomy in Patients after Traumatic Brain Injury – Preliminary Results. ACTA MEDICA MARTINIANA 2018. [DOI: 10.1515/acm-2017-0015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Introduction: Decompressive craniectomy (DC) has been recently proven effective tier II therapeutic procedure in the treatment of refractory posttraumatic intracranial hypertension. However, its full potential and effectivity is yet to be described and this surgery remains controversial. The goals of our study include analysis of efficiency of DC and description of risk factors associated with unfavourable outcome.
Methods: 24 patients who underwent DC at the Clinic of Neurosurgery, JFM CU in Martin, during years 2015–2016 were prospectively observed. Selected demographic, clinical, and radiographic factors were analysed and compared with patient’s GOS (Glasgow Outcome Scale) at the time of their first ambulatory control (after 3.5 months in average).
Results: We observed mortality of 29.17 %. Good outcome (GOS 4–5) was achieved by 29.17 % of the patients as well. Preoperative GCS ≤ 5 (p = 0.049), intraventricular bleeding (p = 0.0268), midline shift ≥ 15 mm (p = 0.0067), and the volume of intracranial lesion (R = −0.41, p = 0.046), especially its extracerebral component (R = −0.46, p = 0.02), were identified as statistically significant negative prognostic factors.
Conclusion: DC is effective in the management of patients with traumatic brain injury. Good outcome is achieved by 29.17 % of the patients. Described negative prognostic factors (preoperative GCS ≤ 5, intraventricular bleeding, midline shift ≥ 15 mm, and increasing the volume of traumatic mass lesion) could help in targeting this surgery only to patients who are expected to benefit from it.
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Affiliation(s)
- M Hanko
- Clinic of Neurosurgery, Jessenius Faculty of Medicine in Martin , Comenius University in Bratislava, University Hospital Martin , Slovakia
| | - R Richterova
- Clinic of Neurosurgery, Jessenius Faculty of Medicine in Martin , Comenius University in Bratislava, University Hospital Martin , Slovakia
| | - B. Kolarovszki
- Clinic of Neurosurgery, Jessenius Faculty of Medicine in Martin , Comenius University in Bratislava, University Hospital Martin , Slovakia
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165
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Bundles of care for resuscitation from hemorrhagic shock and severe brain injury in trauma patients-Translating knowledge into practice. J Trauma Acute Care Surg 2018; 81:780-94. [PMID: 27389129 DOI: 10.1097/ta.0000000000001161] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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166
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Yang A, Xiao XH, Liu ZH, Wan ZL, Wang ZY. A Multimodal Magnetic Resonance Imaging Study of Recovery of Consciousness in Severe Traumatic Brain Injury: Preliminary Results. J Neurotrauma 2018; 35:308-313. [PMID: 29141511 DOI: 10.1089/neu.2017.5335] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ang Yang
- Department of MR, Affiliated Zhongshan City Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhonshan, China
| | - Xue Hong Xiao
- Department of MR, Affiliated Zhongshan City Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhonshan, China
| | - Zhong Hua Liu
- Department of Neurology and Neurological Rehabilitation, Affiliated Zhongshan City Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhonshan, China
| | - Zhi Long Wan
- Department of MR, Affiliated Zhongshan City Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhonshan, China
| | - Ze Yan Wang
- Department of MR, Affiliated Zhongshan City Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhonshan, China
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167
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Khan F, Valliani A, Rehman A, Bari ME. Factors Affecting Functional Outcome after Decompressive Craniectomy Performed for Traumatic Brain Injury: A Retrospective, Cross-sectional Study. Asian J Neurosurg 2018; 13:730-736. [PMID: 30283535 PMCID: PMC6159096 DOI: 10.4103/ajns.ajns_6_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: Factors affecting functional outcome after decompressive craniectomy (DC) performed for traumatic brain injury (TBI) remain poorly understood. Methods: We conducted a retrospective study of all patients who underwent primary DC for TBI at our hospital between 2010 and 2014. Multivariate regression analyses were used to determine the predictors of functional outcome and overall survival. Results: A total of 98 patients with severe (n = 81, 82.6%) or moderate (n = 17, 17.4%) TBI underwent primary DC and were included in this study. The 30-day and overall mortality rates were 15.3% and 25.5%, respectively. At a median follow-up of 90 (interquartile range (IQR): 38–180) days, median Karnofsky Performance Status (KPS) and Glasgow outcome scale-extended (GOSE) scores were 50 (IQR: 20–70) and 5 (IQR: 3–7), respectively. Young age and severe TBI were predictors of mortality. Glasgow coma scale (GCS) score on discharge was a strong predictor of KPS and GOSE scores. Conclusion: Primary DC afforded an acceptable functional outcome (GOSE score ≥5) in 45.9% of patients. Young age and lower GCS at presentation were associated with worse survival. GCS score on discharge was a strong predictor of functional outcome.
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Affiliation(s)
- Farid Khan
- Department of Surgery, Aga Khan University Hospital, Karachi 74800, Pakistan
| | - Arif Valliani
- Department of Surgery, Aga Khan University Hospital, Karachi 74800, Pakistan
| | - Abdul Rehman
- Department of Biological and Biomedical Sciences, The Aga Khan University, Karachi 74800, Pakistan
| | - Muhammad Ehsan Bari
- Department of Surgery, Aga Khan University Hospital, Karachi 74800, Pakistan
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168
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Ferguson SA, Mouzon BC, Lynch C, Lungmus C, Morin A, Crynen G, Carper B, Bieler G, Mufson EJ, Stewart W, Mullan M, Crawford F. Negative Impact of Female Sex on Outcomes from Repetitive Mild Traumatic Brain Injury in hTau Mice Is Age Dependent: A Chronic Effects of Neurotrauma Consortium Study. Front Aging Neurosci 2017; 9:416. [PMID: 29311903 PMCID: PMC5744460 DOI: 10.3389/fnagi.2017.00416] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 12/04/2017] [Indexed: 11/13/2022] Open
Abstract
Traumatic brain injury (TBI) is a serious public health concern which strikes someone every 15 s on average in the US. Even mild TBI, which comprise as many as 75% of all TBI cases, carries long term consequences. The effects of age and sex on long term outcome from TBI is not fully understood, but due to the increased risk for neurodegenerative diseases after TBI it is important to understand how these factors influence the outcome from TBI. This study examined the neurobehavioral and neuropathological effects of age and sex on the outcome 15 days following repetitive mild traumatic brain injury (r-mTBI) in mice transgenic for human tau (hTau). These mice express the six human isoforms of tau but do not express endogenous murine tau and they develop tau pathology and memory impairment in an age-dependent manner. After 5 mild impacts, aged female mice showed motor impairments that were absent in aged male mice, as well as younger animals. Conversely, aged female sham mice outperformed all other groups of aged mice in a Barnes maze spatial memory test. Pathologically, increases in IBA-1 and GFAP staining typically seen in this model of r-mTBI showed the expected increases with both injury and age, but phosphorylated tau stained with CP13 in the hippocampus (reduced in female sham mice compared to males) and PHF1 in the cortex (reduced in female TBI mice compared to male TBI mice) showed the only histological signs of sex-dependent differences in these mice.
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Affiliation(s)
- Scott A Ferguson
- Roskamp Institute, Sarasota, FL, United States.,James A. Haley Veterans' Hospital, Tampa, FL, United States
| | - Benoit C Mouzon
- Roskamp Institute, Sarasota, FL, United States.,James A. Haley Veterans' Hospital, Tampa, FL, United States
| | | | | | | | | | - Benjamin Carper
- RTI International, Research Triangle Park, NC, United States
| | - Gayle Bieler
- RTI International, Research Triangle Park, NC, United States
| | - Elliott J Mufson
- Department of Neurobiology, Barrow Neurological Institute, Phoenix, AZ, United States
| | - William Stewart
- Queen Elizabeth Glasgow University Hospital, Glasgow, United Kingdom.,Institute of Neuroscience and Psychology, University of Glasgow, Glasgow, United Kingdom
| | | | - Fiona Crawford
- Roskamp Institute, Sarasota, FL, United States.,James A. Haley Veterans' Hospital, Tampa, FL, United States
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169
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Cheng WH, Stukas S, Martens KM, Namjoshi DR, Button EB, Wilkinson A, Bashir A, Robert J, Cripton PA, Wellington CL. Age at injury and genotype modify acute inflammatory and neurofilament-light responses to mild CHIMERA traumatic brain injury in wild-type and APP/PS1 mice. Exp Neurol 2017; 301:26-38. [PMID: 29269117 DOI: 10.1016/j.expneurol.2017.12.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/11/2017] [Accepted: 12/15/2017] [Indexed: 12/14/2022]
Abstract
Peak incidence of traumatic brain injury (TBI) occurs in both young and old individuals, and older age at injury is associated with worse outcome and poorer recovery. Moderate-severe TBI is a reported risk factor for dementia, including Alzheimer's disease (AD), but whether mild TBI (mTBI) alters AD pathogenesis is not clear. To delineate how age at injury and predisposition to amyloid formation affect the acute response to mTBI, we used the Closed Head Impact Model of Engineered Rotational Acceleration (CHIMERA) model of TBI to induce two mild injuries in wild-type (WT) and APP/PS1 mice at either 6 or 13months of age and assessed behavioural, histological and biochemical changes up to 14days post-injury. Age at injury did not alter acute behavioural responses to mTBI, including measures of neurological status, motor performance, spatial memory, fear, or anxiety, in either strain. Young APP/PS1 mice showed a subtle and transient increase in diffuse Aβ deposits after injury, whereas old APP/PS1 mice showed decreased amyloid deposits, without significant alterations in total soluble or insoluble Aβ levels at either age. Age at injury and genotype showed complex responses with respect to microglial and cytokine outcomes, where post-injury neuroinflammation is increased in old WT mice but attenuated in old APP/PS1 mice. Intriguingly, silver staining confirmed axonal damage in both strains and ages, yet only young WT and APP/PS1 mice showed neurofilament-positive axonal swellings after mTBI, as this response was almost entirely attenuated in old mice. Plasma neurofilament-light levels were significantly elevated after injury only in young APP/PS1 mice. This study suggests that mild TBI has minimal effects on Aβ metabolism, but that age and genotype can each modify acute outcomes related to white matter injury.
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Affiliation(s)
- Wai Hang Cheng
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Sophie Stukas
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Kris M Martens
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Dhananjay R Namjoshi
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Emily B Button
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Anna Wilkinson
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Asma Bashir
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Jerome Robert
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Peter A Cripton
- Department of Mechanical Engineering, International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, Canada
| | - Cheryl L Wellington
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada.
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170
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Beez T, Steiger HJ, Etminan N. Pharmacological targeting of secondary brain damage following ischemic or hemorrhagic stroke, traumatic brain injury, and bacterial meningitis - a systematic review and meta-analysis. BMC Neurol 2017; 17:209. [PMID: 29212462 PMCID: PMC5719738 DOI: 10.1186/s12883-017-0994-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 11/28/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The effectiveness of pharmacological strategies exclusively targeting secondary brain damage (SBD) following ischemic stroke, aneurysmal subarachnoid hemorrhage, aSAH, intracerebral hemorrhage (ICH), traumatic brain injury (TBI) and bacterial meningitis is unclear. This meta-analysis studied the effect of SBD targeted treatment on clinical outcome across the pathological entities. METHODS Randomized, controlled, double-blinded trials on aforementioned entities with 'death' as endpoint were identified. Effect sizes were analyzed and expressed as pooled risk ratio (RR) estimates with 95% confidence intervals (CI). 123 studies fulfilled the criteria, with data on 66,561 patients. RESULTS In the pooled analysis, there was a minor reduction of mortality for aSAH [RR 0.93 (95% CI:0.85-1.02)], ICH [RR 0.92 (95% CI:0.82-1.03)] and bacterial meningitis [RR 0.86 (95% CI:0.68-1.09)]. No reduction of mortality was found for ischemic stroke [RR 1.05 (95% CI:1.00-1.11)] and TBI [RR 1.03 (95% CI:0.93-1.15)]. Additional analysis of "poor outcome" as endpoint gave similar results. Subgroup analysis with respect to effector mechanisms showed a tendency towards a reduced mortality for the effector mechanism category "oxidative metabolism/stress" for aSAH with a risk ratio of 0.86 [95% CI: 0.73-1.00]. Regarding specific medications, a statistically significant reduction of mortality and poor outcome was confirmed only for nimodipine for aSAH and dexamethasone for bacterial meningitis. CONCLUSIONS Our results show that only a few selected SBD directed medications are likely to reduce the rate of death and poor outcome following aSAH, and bacterial meningitis, while no convincing evidence could be found for the usefulness of SBD directed medications in ischemic stroke, ICH and TBI. However, a subtle effect on good or excellent outcome might remain undetected. These results should lead to a new perspective of secondary reactions following cerebral injury. These processes should not be seen as suicide mechanisms that need to be fought. They should be rather seen as well orchestrated clean-up mechanisms, which may today be somewhat too active in a few very specific constellations, such as meningitis under antibiotic treatment and aSAH after surgical or endovascular exclusion of the aneurysm.
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Affiliation(s)
- Thomas Beez
- Department of Neurosurgery, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Hans-Jakob Steiger
- Department of Neurosurgery, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Nima Etminan
- Department of Neurosurgery, Medical Faculty, University Hospital Mannheim, University of Heidelberg, Mannheim, Germany
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171
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Maas AIR, Menon DK, Adelson PD, Andelic N, Bell MJ, Belli A, Bragge P, Brazinova A, Büki A, Chesnut RM, Citerio G, Coburn M, Cooper DJ, Crowder AT, Czeiter E, Czosnyka M, Diaz-Arrastia R, Dreier JP, Duhaime AC, Ercole A, van Essen TA, Feigin VL, Gao G, Giacino J, Gonzalez-Lara LE, Gruen RL, Gupta D, Hartings JA, Hill S, Jiang JY, Ketharanathan N, Kompanje EJO, Lanyon L, Laureys S, Lecky F, Levin H, Lingsma HF, Maegele M, Majdan M, Manley G, Marsteller J, Mascia L, McFadyen C, Mondello S, Newcombe V, Palotie A, Parizel PM, Peul W, Piercy J, Polinder S, Puybasset L, Rasmussen TE, Rossaint R, Smielewski P, Söderberg J, Stanworth SJ, Stein MB, von Steinbüchel N, Stewart W, Steyerberg EW, Stocchetti N, Synnot A, Te Ao B, Tenovuo O, Theadom A, Tibboel D, Videtta W, Wang KKW, Williams WH, Wilson L, Yaffe K, Adams H, Agnoletti V, Allanson J, Amrein K, Andaluz N, Anke A, Antoni A, van As AB, Audibert G, Azaševac A, Azouvi P, Azzolini ML, Baciu C, Badenes R, Barlow KM, Bartels R, Bauerfeind U, Beauchamp M, Beer D, Beer R, Belda FJ, Bellander BM, Bellier R, Benali H, Benard T, Beqiri V, Beretta L, Bernard F, Bertolini G, Bilotta F, Blaabjerg M, den Boogert H, Boutis K, Bouzat P, Brooks B, Brorsson C, Bullinger M, Burns E, Calappi E, Cameron P, Carise E, Castaño-León AM, Causin F, Chevallard G, Chieregato A, Christie B, Cnossen M, Coles J, Collett J, Della Corte F, Craig W, Csato G, Csomos A, Curry N, Dahyot-Fizelier C, Dawes H, DeMatteo C, Depreitere B, Dewey D, van Dijck J, Đilvesi Đ, Dippel D, Dizdarevic K, Donoghue E, Duek O, Dulière GL, Dzeko A, Eapen G, Emery CA, English S, Esser P, Ezer E, Fabricius M, Feng J, Fergusson D, Figaji A, Fleming J, Foks K, Francony G, Freedman S, Freo U, Frisvold SK, Gagnon I, Galanaud D, Gantner D, Giraud B, Glocker B, Golubovic J, Gómez López PA, Gordon WA, Gradisek P, Gravel J, Griesdale D, Grossi F, Haagsma JA, Håberg AK, Haitsma I, Van Hecke W, Helbok R, Helseth E, van Heugten C, Hoedemaekers C, Höfer S, Horton L, Hui J, Huijben JA, Hutchinson PJ, Jacobs B, van der Jagt M, Jankowski S, Janssens K, Jelaca B, Jones KM, Kamnitsas K, Kaps R, Karan M, Katila A, Kaukonen KM, De Keyser V, Kivisaari R, Kolias AG, Kolumbán B, Kolundžija K, Kondziella D, Koskinen LO, Kovács N, Kramer A, Kutsogiannis D, Kyprianou T, Lagares A, Lamontagne F, Latini R, Lauzier F, Lazar I, Ledig C, Lefering R, Legrand V, Levi L, Lightfoot R, Lozano A, MacDonald S, Major S, Manara A, Manhes P, Maréchal H, Martino C, Masala A, Masson S, Mattern J, McFadyen B, McMahon C, Meade M, Melegh B, Menovsky T, Moore L, Morgado Correia M, Morganti-Kossmann MC, Muehlan H, Mukherjee P, Murray L, van der Naalt J, Negru A, Nelson D, Nieboer D, Noirhomme Q, Nyirádi J, Oddo M, Okonkwo DO, Oldenbeuving AW, Ortolano F, Osmond M, Payen JF, Perlbarg V, Persona P, Pichon N, Piippo-Karjalainen A, Pili-Floury S, Pirinen M, Ple H, Poca MA, Posti J, Van Praag D, Ptito A, Radoi A, Ragauskas A, Raj R, Real RGL, Reed N, Rhodes J, Robertson C, Rocka S, Røe C, Røise O, Roks G, Rosand J, Rosenfeld JV, Rosenlund C, Rosenthal G, Rossi S, Rueckert D, de Ruiter GCW, Sacchi M, Sahakian BJ, Sahuquillo J, Sakowitz O, Salvato G, Sánchez-Porras R, Sándor J, Sangha G, Schäfer N, Schmidt S, Schneider KJ, Schnyer D, Schöhl H, Schoonman GG, Schou RF, Sir Ö, Skandsen T, Smeets D, Sorinola A, Stamatakis E, Stevanovic A, Stevens RD, Sundström N, Taccone FS, Takala R, Tanskanen P, Taylor MS, Telgmann R, Temkin N, Teodorani G, Thomas M, Tolias CM, Trapani T, Turgeon A, Vajkoczy P, Valadka AB, Valeinis E, Vallance S, Vámos Z, Vargiolu A, Vega E, Verheyden J, Vik A, Vilcinis R, Vleggeert-Lankamp C, Vogt L, Volovici V, Voormolen DC, Vulekovic P, Vande Vyvere T, Van Waesberghe J, Wessels L, Wildschut E, Williams G, Winkler MKL, Wolf S, Wood G, Xirouchaki N, Younsi A, Zaaroor M, Zelinkova V, Zemek R, Zumbo F. Traumatic brain injury: integrated approaches to improve prevention, clinical care, and research. Lancet Neurol 2017; 16:987-1048. [DOI: 10.1016/s1474-4422(17)30371-x] [Citation(s) in RCA: 822] [Impact Index Per Article: 117.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 07/06/2017] [Accepted: 09/27/2017] [Indexed: 12/11/2022]
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Derivation of a Predictive Score for Hemorrhagic Progression of Cerebral Contusions in Moderate and Severe Traumatic Brain Injury. Neurocrit Care 2017; 26:80-86. [PMID: 27473209 DOI: 10.1007/s12028-016-0303-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUNDS After traumatic brain injury (TBI), hemorrhagic progression of contusions (HPCs) occurs frequently. However, there is no established predictive score to identify high-risk patients for HPC. METHODS Consecutive patients who were hospitalized (2008-2013) with non-penetrating moderate or severe TBI were studied. The primary outcome was HPC, defined by both a relative increase in contusion volume by ≥30 % and an absolute increase by ≥10 mL on serial imaging. Logistic regression models were created to identify independent risk factors for HPC. The HPC Score was then derived based on the final model. RESULTS Among a total of 286 eligible patients, 61 (21 %) patients developed HPC. On univariate analyses, HPC was associated with older age, higher initial blood pressure, antiplatelet medications, anticoagulants, subarachnoid hemorrhage (SAH) subdural hematoma (SDH), skull fracture, frontal contusion, larger contusion volume, and shorter interval from injury to initial CT. In the final model, SAH (OR 6.33, 95 % CI, 1.80-22.23), SDH (OR 3.46, 95 % CI, 1.39-8.63), and skull fracture (OR 2.67, 95 % CI, 1.28-5.58) were associated with HPC. Based on these factors, the HPC Score was derived (SAH = 2 points, SDH = 1 point, and skull fracture = 1 point). This score had an area under the receiver operating curve of 0.77. Patients with a score of 0-2 had a 4.0 % incidence of HPC, while patients with a score of 3-4 had a 34.6 % incidence of HPC. CONCLUSIONS A simple HPC Score was developed for early risk stratification of HPC in patients with moderate or severe TBI.
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173
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Epidemiology of traumatic brain injury older inpatients in Chinese military hospitals, 2001–2007. J Clin Neurosci 2017; 44:107-113. [DOI: 10.1016/j.jocn.2017.05.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/22/2017] [Indexed: 11/22/2022]
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Abstract
The past 50 years have been a period of exciting progress in neuropsychological research on traumatic brain injury (TBI). Neuropsychologists and neuropsychological testing have played a critical role in these advances. This study looks back at three major scientific advances in research on TBI that have been critical in pushing the field forward over the past several decades: The advent of modern neuroimaging; the recognition of the importance of non-injury factors in determining recovery from TBI; and the growth of cognitive rehabilitation. Thanks to these advances, we now have a better understanding of the pathophysiology of TBI and how recovery from the injury is also shaped by pre-injury, comorbid, and contextual factors, and we also have increasing evidence that active interventions, including cognitive rehabilitation, can help to promote better outcomes. The study also peers ahead to discern two important directions that seem destined to influence research on TBI over the next 50 years: the development of large, multi-site observational studies and randomized controlled trials, bolstered by international research consortia and the adoption of common data elements; and attempts to translate research into health care and health policy by the application of rigorous methods drawn from implementation science. Future research shaped by these trends should provide critical evidence regarding the outcomes of TBI and its treatment, and should help to disseminate and implement the knowledge gained from research to the betterment of the quality of life of persons with TBI. (JINS, 2017, 23, 806-817).
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175
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Adams SM, Conley YP, Ren D, Okonkwo DO, Puccio AM, Dixon CE, Clark RSB, Kochanek PM, Empey PE. ABCG2 c.421C>A Is Associated with Outcomes after Severe Traumatic Brain Injury. J Neurotrauma 2017; 35:48-53. [PMID: 28747144 DOI: 10.1089/neu.2017.5000] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Traumatic brain injury (TBI) is a leading cause of death with no pharmacological treatments that improve outcomes. Transporter proteins participate in TBI recovery by maintaining the central nervous system (CNS) biochemical milieu. Genetic variations in transporters that alter expression and/or function have been associated with TBI outcomes. The ATP-binding cassette transporter, ABCG2, is a uric acid (UA) transporter that effluxes UA from cells in the CNS and is responsible for systemic UA clearance. Uric acid is a CNS antioxidant and/or a biomarker that might support TBI recovery. Our objective was to investigate the impact of ABCG2 SNP: c.421C>A on TBI outcomes. Two cohorts (discovery [N = 270] and replication [N = 166]) were genotyped for ABCG2 c.421C>A. Glasgow Outcome Scale (GOS) scores were collected at 3, 6, 12, and 24 months post-injury and compared with mixed-effects multiple ordinal regression controlled for time post-injury, age, sex, time, post-injury imaging determined hemorrhage types, and Glasgow Coma Scale score. Variant alleles (genotype) were associated with better GOS scores (p = 0.01 [discovery] and p = 0.02 [replication]), whereas genotype*age interaction was associated with worse GOS scores (p = 0.03 [discovery] and p = 0.01 [replication]). Reversed coefficient directionality suggests variant allele(s) are protective up to approximately age 34 years. Overall, variant alleles at ABCG2 c.421C>A associate with better GOS scores post-injury in two independently sampled cohorts. This finding is mitigated by increasing subject age. This suggests that ABCG2 might have an age-dependent effect on TBI recovery and should be explored in future mechanistic studies.
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Affiliation(s)
- Solomon M Adams
- 1 Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Yvette P Conley
- 2 Health Promotion and Development, School of Nursing, University of Pittsburgh , Pittsburgh, Pennsylvania.,3 Human Genetics, Graduate School of Public Health, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Dianxu Ren
- 4 Health and Community Systems, School of Nursing, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - David O Okonkwo
- 5 Neurological Surgery, School of Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Ava M Puccio
- 5 Neurological Surgery, School of Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - C Edward Dixon
- 5 Neurological Surgery, School of Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania.,6 Safar Center for Resuscitation Research, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Robert S B Clark
- 6 Safar Center for Resuscitation Research, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Patrick M Kochanek
- 6 Safar Center for Resuscitation Research, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Philip E Empey
- 6 Safar Center for Resuscitation Research, University of Pittsburgh , Pittsburgh, Pennsylvania.,7 Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh , Pittsburgh, Pennsylvania
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176
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Rodriguez-Grande B, Ichkova A, Lemarchant S, Badaut J. Early to Long-Term Alterations of CNS Barriers After Traumatic Brain Injury: Considerations for Drug Development. AAPS JOURNAL 2017; 19:1615-1625. [PMID: 28905273 DOI: 10.1208/s12248-017-0123-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 07/11/2017] [Indexed: 01/06/2023]
Abstract
Traumatic brain injury (TBI) is one of the leading causes of death and disability, particularly amongst the young and the elderly. The functions of the blood-brain barrier (BBB) and blood-cerebrospinal fluid barrier (BCSFB) are strongly impaired after TBI, thus affecting brain homeostasis. Following the primary mechanical injury that characterizes TBI, a secondary injury develops over time, including events such as edema formation, oxidative stress, neuroinflammation, and alterations in paracelullar and transcellular transport. To date, most therapeutic interventions for TBI have aimed at direct neuroprotection during the acute phase and have not been successful. Targeting the barriers of the central nervous system (CNS) could be a wider therapeutic approach, given that restoration of brain homeostasis would benefit all brain cells, including neurons. Importantly, BBB disregulation has been observed even years after TBI, concomitantly with neurological and psychosocial sequelae; however, treatments targeting the post-acute phase are scarce. Here, we review the mechanisms of primary and secondary injury of CNS barriers, the accumulating evidence showing long-term damage to these structures and some of the therapies that have targeted these mechanisms. Finally, we discuss how the injury characteristics (hemorrhagic vs non-hemorrhagic, involvement of head rotation, gray vs white matter), the sex, and the age of the patient need to be carefully considered to improve clinical trial design and outcome interpretation, and to improve future drug development.
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Affiliation(s)
| | - Aleksandra Ichkova
- CNRS UMR5287, University of Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Sighild Lemarchant
- CNRS UMR5287, University of Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Jerome Badaut
- CNRS UMR5287, University of Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France. .,Basic Science Departments, Loma Linda University School of Medicine, Loma Linda, California, USA.
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177
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Nakae R, Yokobori S, Takayama Y, Kuwamoto K, Naoe Y, Yokota H. Age-related differences in fibrinolytic parameters in patients with acute traumatic brain injury. Surg Neurol Int 2017; 8:214. [PMID: 28966820 PMCID: PMC5609444 DOI: 10.4103/sni.sni_56_17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 07/26/2017] [Indexed: 11/18/2022] Open
Abstract
Background: Coagulopathy and old age have been associated with poor outcomes in traumatic brain injury (TBI) patients; however, the relationships of coagulopathy and age with the acute phase of TBI remain unclear. We hypothesized that coagulation/fibrinolytic abnormalities are more severe in older patients in the acute phase of TBI and may explain, in part, their poor outcome. Methods: We analyzed the relationship between coagulation/fibrinolytic parameters and age in the acute phase of TBI by retrospectively evaluating 274 patients with initial blood samples obtained no more than 1 hour after injury. Measurement of platelet count, prothrombin time, activated partial thromboplastin time, plasma levels of fibrinogen, and D-dimer was done in the emergency department on arrival as well as 3, 6, and 12 hours following injury. Values were compared between patients aged 16–55 years (group 1) and those aged older than 55 years (group 2) with an Abbreviated Injury Score (AIS)-head of 3–5 to identify any relationship between these parameters and age. Results: When groups 1 and 2 were matched for AIS-head, plasma levels of D-dimer in group 2 were significantly higher than those in group 1 from hospital admission to 12 hours after injury. The Glasgow Outcome Scale scores at 3 months post-injury of group 2 with AIS 4 and 5 were significantly lower than those of group 1 (both P < 0.0001). Conclusions: Fibrinolytic abnormalities are more severe in older acute-phase TBI patients, which may be a factor associated with their poor prognosis.
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Affiliation(s)
- Ryuta Nakae
- Emergency and Critical Care Center, Kawaguchi Municipal Medical Center, Kawaguchi-shi, Saitama, Japan
| | - Shoji Yokobori
- Department of Emergency and Critical Care Medicine, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
| | - Yasuhiro Takayama
- Department of Emergency and Critical Care Medicine, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
| | - Kentaro Kuwamoto
- Department of Emergency and Critical Care Medicine, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
| | - Yasutaka Naoe
- Emergency and Critical Care Center, Kawaguchi Municipal Medical Center, Kawaguchi-shi, Saitama, Japan
| | - Hiroyuki Yokota
- Department of Emergency and Critical Care Medicine, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
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Landes M, Venugopal R, Berman S, Heffernan S, Maskalyk J, Azazh A. Epidemiology, clinical characteristics and outcomes of head injured patients in an Ethiopian emergency centre. Afr J Emerg Med 2017; 7:130-134. [PMID: 30456124 PMCID: PMC6234141 DOI: 10.1016/j.afjem.2017.04.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 01/20/2017] [Accepted: 04/12/2017] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Head injury is a leading cause of mortality in Africa. We characterise the epidemiology and outcomes of head injury at an Ethiopian emergency centre. METHODS We conducted a prospective cohort study of all head injured patients presenting to the Emergency Centre of Tikur Anbessa Specialised Hospital, Addis Ababa. Data was collected via a standardised form from the patient's chart, radiology reports and operative reports. Patients were followed until discharge, facility transfer, death, or 7 days in hospital. Consent was obtained from the patient or substitute decision maker. RESULTS Among 204 head injured patients enrolled, the majority were <30 years old (51.0%) and male (86.8%). Forty-one percent of injuries occurred from road traffic accidents (RTAs). A significant number of patients had at least one indicator of severe injury on presentation: 51 (25.0%) had a GCS < 9, 53 (26.0%) had multi-system trauma, 95 (46.6%) had ≥1 abnormal vital sign and of the 133 patients with data available, 37 (27.8%) had a Revised Trauma Score (RTS) < 6. Patients injured by RTA were more likely to have indicators of severe injury than other mechanisms, including multi-system trauma (OR 3.2, 95% CI 1.7-6.2, p = 0.00), GCS < 9 (OR 3.7, 95% CI 1.8-7.4, p = 0.00), ≥1 abnormal vital sign (OR 2.5, 95% CI 1.4-4.6, p = 0.00) or an RTS score < 6 (OR 3.6, 95% CI 1.6-8.1, p = 0.00). Overall, 149 (73.0%) patients were discharged from hospital, 34 (16.7%) were transferred to another hospital, and 21 patients died (10.3%). In multivariable analysis, death was significantly associated with age over 60 years (aOR 68.8, 95% CI 2.0-2329.0, p = 0.02), GCS < 9 (aOR 14.8, 95% CI 2.2-99.5, p = 0.01), fixed bilateral pupils (aOR 39.1, 95% CI 4.2-362.8, p < 0.01) and hypoxia (oxygen saturation <90%; aOR 14.2%, 95% CI 2.6-123.9, p = 0.01). CONCLUSION Head injury represents a significant risk for morbidity and mortality in Ethiopia, of which RTA's increase injury severity. Targeted approaches to improving care of the injured may improve outcomes.
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179
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Irvine KA, Clark JD. Chronic Pain After Traumatic Brain Injury: Pathophysiology and Pain Mechanisms. PAIN MEDICINE 2017; 19:1315-1333. [DOI: 10.1093/pm/pnx153] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Karen-Amanda Irvine
- Veterans Affairs Palo Alto Health Care System, Anesthesiology Service, Palo Alto, California
- Department of Anesthesiology, Pain and Perioperative Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - J David Clark
- Veterans Affairs Palo Alto Health Care System, Anesthesiology Service, Palo Alto, California
- Department of Anesthesiology, Pain and Perioperative Medicine, Stanford University School of Medicine, Stanford, California, USA
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180
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Howrey BT, Graham JE, Pappadis MR, Granger CV, Ottenbacher KJ. Trajectories of Functional Change After Inpatient Rehabilitation for Traumatic Brain Injury. Arch Phys Med Rehabil 2017; 98:1606-1613. [PMID: 28392325 PMCID: PMC5710828 DOI: 10.1016/j.apmr.2017.03.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 03/03/2017] [Accepted: 03/12/2017] [Indexed: 01/23/2023]
Abstract
OBJECTIVE To examine trajectories of functional recovery after rehabilitation for traumatic brain injury (TBI). DESIGN Prospective study. SETTING Inpatient rehabilitation hospitals in the Uniform Data System for Medical Rehabilitation. PARTICIPANTS A subset of individuals receiving inpatient rehabilitation services for TBI from 2002 to 2010 who also had postdischarge measurement of functional independence (N=16,583). INTERVENTIONS Inpatient rehabilitation. MAIN OUTCOMES MEASURES Admission, discharge, and follow-up data were obtained from the Uniform Data System for Medical Rehabilitation. We used latent class mixture models to examine recovery trajectories for both cognitive and motor functioning as measured by the FIM instrument. RESULTS Latent class models identified 3 trajectories (low, medium, high) for both cognitive and motor FIM subscales. Factors associated with membership in the low cognition trajectory group included younger age, male sex, racial/ethnic minority, Medicare or Medicaid (vs commercial or other insurance), comorbid conditions, and greater duration from injury date to rehabilitation admission date. Factors associated with membership in the low motor trajectory group included older age, racial/ethnic minority, Medicare or Medicaid coverage, comorbid conditions, open head injury, and greater duration to admission. CONCLUSIONS Standard approaches to assessing recovery patterns after TBI obscure differences between subgroups with trajectories that differ from the overall mean. Select demographic and clinical characteristics can help classify patients with TBI into distinct functional recovery trajectories, which can enhance both patient-centered care and quality improvement efforts.
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Affiliation(s)
- Bret T Howrey
- Department of Family Medicine, University of Texas Medical Branch, Galveston, TX.
| | - James E Graham
- Division of Rehabilitation Sciences, University of Texas Medical Branch, Galveston, TX
| | - Monique R Pappadis
- Division of Rehabilitation Sciences, University of Texas Medical Branch, Galveston, TX
| | - Carl V Granger
- Department of Neurology, School of Medical and Biomedical Sciences, University at Buffalo, Buffalo, NY
| | - Kenneth J Ottenbacher
- Division of Rehabilitation Sciences, University of Texas Medical Branch, Galveston, TX
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Trimmel H, Majdan M, Wodak A, Herzer G, Csomor D, Brazinova A. Citicoline in severe traumatic brain injury: indications for improved outcome : A retrospective matched pair analysis from 14 Austrian trauma centers. Wien Klin Wochenschr 2017; 130:37-44. [PMID: 28752349 DOI: 10.1007/s00508-017-1240-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/11/2017] [Indexed: 11/27/2022]
Abstract
Goal-oriented management of traumatic brain injury (TBI) can save the lives and/or improve the long-term outcome of millions of affected patients worldwide. Additionally, enhancing quality of life will save enormous socio-economic costs; however, promising TBI treatment strategies with neuroprotective agents, such as citicoline (CDP-choline), lacked evidence or produced contradictory results in clinical trials. During a prehospital TBI project to optimize early TBI care within 14 Austrian trauma centers, data on 778 TBI patients were prospectively collected. As preceding evaluations suggested a beneficial outcome in TBI patients treated at the Wiener Neustadt Hospital (WNH), we aimed to investigate the potential role of citicoline administration, solely applied in WNH, in those patients. In a retrospective subgroup analysis we compared 67 patients from WNH with citicoline administration and 67 matched patients from other Austrian centers without citicoline use. Patients with Glasgow Coma Scale score <13 on site and/or Abbreviated Injury Scale of the region "head" >2 were included. Our analysis revealed significantly reduced rates of intensive care unit (ICU) mortality (5% vs. 24%, p < 0.01), in-hospital mortality (9% vs. 24%, p = 0.035) and 6‑month mortality (13% vs. 28%, p = 0.031), as well as of unfavorable outcome (34% vs. 57%, p = 0.015) and observed vs. expected ratio for mortality (0.42 vs. 0.84) in the WNH (citicoline receivers) group. Despite the limitations of a retrospective subgroup analysis our findings suggest a possible correlation between early and consequent citicoline administration and beneficial outcomes. Therefore, we aim to set up an initiative for a prospective, multicenter randomized controlled trial with citicoline in sTBI (severe TBI) patients.
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Affiliation(s)
- Helmut Trimmel
- Department of Anesthesiology, Emergency Medicine and Intensive Care and Karl Landsteiner Institute of Emergency Medicine, General Hospital Wiener Neustadt, Wiener Neustadt, Austria.
| | - Marek Majdan
- Department of Public Health, Faculty of Health Sciences and Social Work, Trnava University, Trnava, Slovakia
| | - Andrea Wodak
- Department of Anesthesiology, Emergency Medicine and Intensive Care and Karl Landsteiner Institute of Emergency Medicine, General Hospital Wiener Neustadt, Wiener Neustadt, Austria
| | - Guenther Herzer
- Department of Anesthesiology, Emergency Medicine and Intensive Care and Karl Landsteiner Institute of Emergency Medicine, General Hospital Wiener Neustadt, Wiener Neustadt, Austria
| | - Daniel Csomor
- Department of Anesthesiology, Emergency Medicine and Intensive Care and Karl Landsteiner Institute of Emergency Medicine, General Hospital Wiener Neustadt, Wiener Neustadt, Austria
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Wan X, Zhao K, Wang S, Zhang H, Zeng L, Wang Y, Han L, Beejadhursing R, Shu K, Lei T. Is It Reliable to Predict the Outcome of Elderly Patients with Severe Traumatic Brain Injury Using the IMPACT Prognostic Calculator? World Neurosurg 2017; 103:584-590. [DOI: 10.1016/j.wneu.2017.04.069] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 04/08/2017] [Accepted: 04/10/2017] [Indexed: 11/27/2022]
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183
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[Polytrauma and concomitant traumatic brain injury : The role of the trauma surgeon]. Unfallchirurg 2017; 120:722-727. [PMID: 28612105 DOI: 10.1007/s00113-017-0354-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Concomitant traumatic brain injury (TBI) increases mortality and reduces quality of life of polytrauma patients. These facts demand effective treatment strategies while the growing specialization of medicine is questioning the role of the trauma surgeon in the management of these patients. OBJECTIVES Which factors influence outcome of polytrauma with concomitant TBI? Who should be responsible for the management of these patients and what is the limit of management? MATERIALS AND METHODS A literature search using Medline via PubMed was performed with Medical Subject Headings and text word search. RESULTS The crucial factors for outcome are absence of hypotension, adherence to pre- and in-hospital standards like fast transportation to appropriate centers, priority-based diagnostic and therapeutic strategies and strict adherence to principles of damage control surgery. Patients with polytrauma and TBI are treated by different specialties around the world based on the trauma system, geographic circumstances and resources. Investigations of operative and conservative management by different medical specialties showed comparable outcomes. CONCLUSIONS In an age of standardization and a high degree of specialization in the field of medicine, the trauma surgeon still seems to be able to ensure an optimal treatment of polytrauma and concomitant TBI by focusing on priority-based diagnostic and therapeutic strategies and adhering to principles of damage control surgery.
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184
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Erem G, Bugeza S, Malwadde EK. Outcome at two weeks in patients with Traumatic brain injury following road traffic accidents in an urban tertiary hospital in Uganda. COGENT MEDICINE 2017. [DOI: 10.1080/2331205x.2017.1326205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Geoffrey Erem
- Department of Radiology, Makerere University College of Health Sciences, Mulago Hospital, P.O. Box 7072, Kampala, Uganda
| | - Samuel Bugeza
- Department of Radiology, Makerere University College of Health Sciences, Mulago Hospital, P.O. Box 7072, Kampala, Uganda
| | - Elsie Kiguli Malwadde
- Department of Radiology, Makerere University College of Health Sciences, Mulago Hospital, P.O. Box 7072, Kampala, Uganda
- African Centre for Global Health and Social Transformation (ACHEST), Kampala, Uganda
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185
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Khan M, O'Keeffe T, Jehan F, Kulvatunyou N, Kattaa A, Gries L, Tang A, Joseph B. The impact of Glasgow Coma Scale-age prognosis score on geriatric traumatic brain injury outcomes. J Surg Res 2017; 216:109-114. [PMID: 28807194 DOI: 10.1016/j.jss.2017.04.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/10/2017] [Accepted: 04/27/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND As the population ages, increasing number of geriatric patients sustain traumatic brain injury (TBI). Communication of accurate prognostic information is crucial for making informed decisions on behalf of such patients. Therefore, the aim of our study was to develop a simple and clinically applicable tool that accurately predicts the prognosis in geriatric TBI patients. METHODS We performed a 1-y (2011) retrospective analysis of isolated geriatric TBI patients (age ≥65 y, head abbreviated injury score [AIS] ≥ 3, and other body AIS < 3) in the National Trauma Data Bank. We calculated a Glasgow Coma Scale (GCS)-age prognosis (GAP) score (age/GCS score) for all patients. Outcome measures were in-hospital adverse outcomes (mortality and Rehab/skilled nursing facility discharge disposition). Regression analysis and receiver operator characteristic curve analysis were performed to determine the discriminatory power of GAP score. RESULTS A total of 8750 geriatric patients with TBI were included. Mean age was 77.8 ± 7.1 y, the median (interquartile range) GCS was 15 (13-15), and the median (interquartile range) head AIS was 4 (3-4). The overall in-hospital mortality rate was 12.7%, and 34.2% of the patients were discharged home. As the GAP score increased, the mortality rate increased and discharge to-home decreased. Receiver operator characteristic curve analysis revealed excellent discriminatory power for mortality (area under the curve: 0.826). Above a GAP score of 12, the mortality rate was >50% and more than 45% of the patients were discharged to Rehab/skilled nursing facility. CONCLUSIONS For geriatric patients with TBI, a simple GAP score reliably predicts outcomes. A score above 12 results in a drastic increase in mortality and an adverse discharge disposition. This simple tool may help clinicians provide accurate prognostic information to patients' families.
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Affiliation(s)
- Muhammad Khan
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Terence O'Keeffe
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Faisal Jehan
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Narong Kulvatunyou
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Abdullah Kattaa
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Lynn Gries
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Andrew Tang
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona
| | - Bellal Joseph
- Division of Trauma, Critical Care, Emergency Surgery, and Burns, Department of Surgery, University of Arizona, Tucson, Arizona.
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186
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Llompart-Pou JA, Pérez-Bárcena J, Chico-Fernández M, Sánchez-Casado M, Raurich JM. Severe trauma in the geriatric population. World J Crit Care Med 2017; 6:99-106. [PMID: 28529911 PMCID: PMC5415855 DOI: 10.5492/wjccm.v6.i2.99] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/03/2017] [Accepted: 03/17/2017] [Indexed: 02/06/2023] Open
Abstract
Geriatric trauma constitutes an increasingly recognized problem. Aging results in a progressive decline in cellular function which leads to a loose of their capacity to respond to injury. Some medications commonly used in this population can mask or blunt the response to injury. Falls constitute the most common cause of trauma and the leading cause of trauma-related deaths in this population. Falls are complicated by the widespread use of antiplatelets and anticoagulants, especially in patients with brain injury. Under-triage is common in this population. Evaluation of frailty could be helpful to solve this issue. Appropriate triaging and early aggressive management with correction of coagulopathy can improve outcome. Limitation of care and palliative measures must be considered in cases with a clear likelihood of poor prognosis.
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Hertelendy P, Menyhárt Á, Makra P, Süle Z, Kiss T, Tóth G, Ivánkovits-Kiss O, Bari F, Farkas E. Advancing age and ischemia elevate the electric threshold to elicit spreading depolarization in the cerebral cortex of young adult rats. J Cereb Blood Flow Metab 2017; 37:1763-1775. [PMID: 27189902 PMCID: PMC5435279 DOI: 10.1177/0271678x16643735] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/25/2016] [Accepted: 02/22/2016] [Indexed: 01/03/2023]
Abstract
Spreading depolarizations of long cumulative duration have been implicated in lesion development and progression in patients with stroke and traumatic brain injury. Spreading depolarizations evolve less likely in the aged brain, but it remains to be determined at what age the susceptibility to spreading depolarizations starts to decline, especially in ischemia. Spreading depolarizations were triggered by epidural electric stimulation prior and after ischemia induction in the cortex of 7-30 weeks old anesthetized rats ( n = 38). Cerebral ischemia was achieved by occlusion of both common carotid arteries. Spreading depolarization occurrence was confirmed by the acquisition of DC potential and electrocorticogram. Cerebral blood flow variations were recorded by laser-Doppler flowmetry. Dendritic spine density in the cortex was determined in Golgi-COX stained sections. Spreading depolarization initiation required increasingly greater electric charge with older age, a potential outcome of consolidation of cortical connections, indicated by altered dendritic spine distribution. The threshold of spreading depolarization elicitation increased with ischemia in all age groups, which may be caused by tissue acidosis and increased K+ conductance, among other factors. In conclusion, the brain appears to be the most susceptible to spreading depolarizations at adolescent age; therefore, spreading depolarizations may occur in young patients of ischemic or traumatic brain injury at the highest probability.
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Affiliation(s)
- Péter Hertelendy
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Ákos Menyhárt
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Péter Makra
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Zoltán Süle
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Tamás Kiss
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Gergely Tóth
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Orsolya Ivánkovits-Kiss
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Ferenc Bari
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Eszter Farkas
- Department of Medical Physics and Informatics, Faculty of Medicine & Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
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Andersson E, Rackauskaite D, Svanborg E, Csajbók L, Öst M, Nellgård B. A prospective outcome study observing patients with severe traumatic brain injury over 10-15 years. Acta Anaesthesiol Scand 2017; 61:502-512. [PMID: 28374472 DOI: 10.1111/aas.12880] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/16/2017] [Accepted: 02/20/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Severe traumatic brain injury (sTBI) can be divided into primary and secondary injuries. Intensive care protocols focus on preventing secondary injuries. This prospective cohort study was initiated to investigate outcome, including mortality, in patients treated according to the Lund Concept after a sTBI covering 10-15 years post-trauma. METHODS Patients were included during 2000-2004 when admitted to the neurointensive care unit, Sahlgrenska University Hospital. Inclusion criteria were: Glasgow coma scale score of ≤8, need for artificial ventilation and intracranial monitoring. Glasgow Outcome Scale (GOS) was used to evaluate outcome both at 1-year and 10-15 years post-trauma. RESULTS Ninety-five patients, (27 female and 68 male), were initially included. Both improvement and deterioration were noted between 1- and 10-15 years post-injury. Mortality rate (34/95) was higher in the studied population vs. a matched Swedish population, (Standard mortality rate (SMR) 9.5; P < 0.0001). When dividing the cohort into Good (GOS 4-5) and Poor (GOS 2-3) outcome at 1-year, only patients with Poor outcome had a higher mortality rate than the matched population (SMR 7.3; P < 0.0001). Further, good outcome (high GOS) at 1-year was associated with high GOS 10-15 years post-trauma (P < 0.0001). Finally, a majority of patients demonstrated symptoms of mental fatigue. CONCLUSION This indicates that patients with severe traumatic brain injury with Good outcome at 1-year have similar survival probability as a matched Swedish population and that high Glasgow outcome scale at 1-year is related to good long-term outcome. Our results further emphasise the advantage of the Lund concept.
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Affiliation(s)
- E. Andersson
- Department of Anaesthesiology and Intensive Care Medicine; Sahlgrenska University Hospital and Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - D. Rackauskaite
- Department of Anaesthesiology and Intensive Care Medicine; Sahlgrenska University Hospital and Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - E. Svanborg
- Department of Anaesthesiology and Intensive Care Medicine; Sahlgrenska University Hospital and Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - L. Csajbók
- Department of Anaesthesiology and Intensive Care Medicine; Sahlgrenska University Hospital and Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - M. Öst
- Department of Anaesthesiology and Intensive Care Medicine; Sahlgrenska University Hospital and Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - B. Nellgård
- Department of Anaesthesiology and Intensive Care Medicine; Sahlgrenska University Hospital and Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
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189
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Kim JK, Kim NY, Kim YW. Predictors for Depressive Mood in Geriatric Patients After Traumatic Brain Injury: A Retrospective Cross-Sectional Study. Ann Rehabil Med 2017; 41:279-289. [PMID: 28503462 PMCID: PMC5426276 DOI: 10.5535/arm.2017.41.2.279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 08/18/2016] [Indexed: 12/01/2022] Open
Abstract
Objective To identify predictors for depressive mood in geriatric patients after traumatic brain injury (TBI). Methods A retrospective review of patients' medical charts was performed in TBI patients who were older than 60 years and referred to the Department of Rehabilitation Medicine at Severance Hospital in 2002–2016. The patients were classified into two groups based on the Geriatric Depression Scale (GDS): non-depressive group (0≤GDS≤16) and depressive group (17≤GDS≤30). Data was collected on demographic, socioeconomic, comorbidities, and trauma-related factors, as well as the pathophysiology of TBI, localization of lesion, post-traumatic complications, functional level, and cognitive and linguistic function. Significant variables from univariate analysis were analyzed using logistic regression. Results Forty-two patients were included, of whom 64.3% displayed a depressive mood. Patients in the depressive group had higher comorbidity scores (p=0.03), lower Functional Independence Measure (FIM) totals (p=0.03) and FIM motor (p=0.03) scores, higher modified Rankin Scale scores (p=0.04), and frequently had a bilateral or left side brain lesion (p=0.002). Higher comorbidity scores (odds ratio [OR], 1.764; 95% confidence interval [CI], 1.047–2.971), bilateral lesions (OR, 13.078; 95% CI, 1.786–95.780), and left side lesions (OR, 46.074; 95% CI, 3.175–668.502) were independently associated with a depressive mood in the multiple logistic regression analysis. Conclusion The risk of depressive mood in geriatric patients after TBI is associated with comorbidity, functional limitation, and the horizontal distribution of brain lesions. The most significant determining factors were comorbidity and the horizontal distribution of brain lesions. Early detection of risk factors is important to prevent and manage depressive mood in geriatric patients after TBI.
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Affiliation(s)
- Je Kyung Kim
- Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Na Young Kim
- Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Yong Wook Kim
- Department of Rehabilitation Medicine and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
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190
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Lee BK, Lee SJ, Park CH, Jeung KW, Jung YH, Lee DH, Lee SM, Kim HC, Min YI. Relationship between age and outcomes of comatose cardiac arrest survivors in a setting without withdrawal of life support. Resuscitation 2017; 115:75-81. [PMID: 28392372 DOI: 10.1016/j.resuscitation.2017.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/26/2017] [Accepted: 04/04/2017] [Indexed: 10/19/2022]
Abstract
AIM OF THE STUDY Previous studies on the relationship between age and outcomes after cardiac arrest were performed in settings where the majority of patients died after the withdrawal of life support (WLS). We examined the association between age and outcomes of comatose cardiac arrest survivors in a setting where WLS was not performed. METHODS This single-centre retrospective observational study included adult comatose cardiac arrest survivors treated with targeted temperature management. In Korea, WLS is not permitted unless the patient is pronounced brain-dead. The primary outcome was poor neurologic outcome at hospital discharge, defined as Cerebral Performance Categories scores of 3-5. The secondary outcomes were in-hospital and six-month mortalities. RESULTS A total of 534 patients were analysed. In multivariate analysis, age was not associated with in-hospital mortality (odds ratio [OR], 1.01; 95% confidence interval [CI], 0.99-1.02), but it was independently associated with neurologic outcome at hospital discharge (OR, 1.03; 95% CI, 1.02-1.05) and six-month mortality (OR, 1.05; 95% CI, 1.03-1.07). When age was categorised into 10-year intervals, age groups less than 61-70 years had significantly lower OR for poor neurologic outcome compared with the reference group (61-70 years), while the OR for poor neurologic outcome in age groups greater than 70 years did not differ from that in the reference group. CONCLUSION In a setting where WLS is not performed, we found that age was not associated with in-hospital mortality but was independently associated with neurologic outcome at hospital discharge and six-month mortality.
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Affiliation(s)
- Byung Kook Lee
- Department of Emergency Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, Republic of Korea.
| | - Seung Joon Lee
- Department of Emergency Medicine, Myongji Hospital, 697-24 Hwajung-dong, Deokyang-gu, Goyang, Gyeonggi-do, Republic of Korea.
| | - Chi Ho Park
- Department of Emergency Medicine, Myongji Hospital, 697-24 Hwajung-dong, Deokyang-gu, Goyang, Gyeonggi-do, Republic of Korea.
| | - Kyung Woon Jeung
- Department of Emergency Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, Republic of Korea.
| | - Yong Hun Jung
- Department of Emergency Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, Republic of Korea.
| | - Dong Hun Lee
- Department of Emergency Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, Republic of Korea.
| | - Sung Min Lee
- Department of Emergency Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, Republic of Korea.
| | - Hyun Chang Kim
- Department of Emergency Medicine, Gwangju Veterans Hospital, 99 Chumdanwolbong-ro, Gwangsangu, Gwangju, Republic of Korea.
| | - Yong Il Min
- Department of Emergency Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, Republic of Korea.
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191
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Faried A, Bachani AM, Sendjaja AN, Hung YW, Arifin MZ. Characteristics of Moderate and Severe Traumatic Brain Injury of Motorcycle Crashes in Bandung, Indonesia. World Neurosurg 2017; 100:195-200. [DOI: 10.1016/j.wneu.2016.12.133] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/29/2016] [Accepted: 12/30/2016] [Indexed: 11/25/2022]
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192
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Tang Q, Lei J, Gao G, Feng J, Mao Q, Jiang J. Prevalence of persistent vegetative state in patients with severe traumatic brain injury and its trend during the past four decades: A meta-analysis. NeuroRehabilitation 2017; 40:23-31. [DOI: 10.3233/nre-161387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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193
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Miller PR, Chang MC, Hoth JJ, Hildreth AN, Wolfe SQ, Gross JL, Martin RS, Carter JE, Meredith JW, D'Agostino R. Predicting Mortality and Independence at Discharge in the Aging Traumatic Brain Injury Population Using Data Available at Admission. J Am Coll Surg 2017; 224:680-685. [PMID: 28263858 DOI: 10.1016/j.jamcollsurg.2016.12.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 12/19/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Aging worsens outcome in traumatic brain injury (TBI), but available studies may not provide accurate outcomes predictions due to confounding associated injuries. Our goal was to develop a predictive tool using variables available at admission to predict outcomes related to severity of brain injury in aging patients. STUDY DESIGN Characteristics and outcomes of blunt trauma patients, aged 50 or older, with isolated TBI, in the National Trauma Data Bank (NTDB), were evaluated. Equations predicting survival and independence at discharge (IDC) were developed and validated using patients from our trauma registry, comparing predicted with actual outcomes. RESULTS Logistic regression for survival and IDC was performed in 57,588 patients using age, sex, Glasgow Coma Scale score (GCS), and Revised Trauma Score (RTS). All variables were independent predictors of outcome. Two models were developed using these data. The first included age, sex, and GCS. The second substituted RTS for GCS. C statistics from the models for survival and IDC were 0.90 and 0.82 in the GCS model. In the RTS model, C statistics were 0.80 and 0.67. The use of GCS provided better discrimination and was chosen for further examination. Using a predictive equation derived from the logistic regression model, outcome probabilities were calculated for 894 similar patients from our trauma registry (January 2012 to March 2016). The survival and IDC models both showed excellent discrimination (p < 0.0001). Survival and IDC generally decreased by decade: age 50 to 59 (80% IDC, 6.5% mortality), 60 to 69 (82% IDC, 7.0% mortality), 70 to 79 (76% IDC, 8.9% mortality), and 80 to 89 (67% IDC, 13.4% mortality). CONCLUSIONS These models can assist in predicting the probability of survival and IDC for aging patients with TBI. This provides important data for loved ones of these patients when addressing goals of care.
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Affiliation(s)
- Preston R Miller
- Department of Surgery, Wake Forest University, Winston-Salem, NC.
| | - Michael C Chang
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - J Jason Hoth
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - Amy N Hildreth
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - Stacey Q Wolfe
- Department of Neurosurgery, Wake Forest University, Winston-Salem, NC
| | - Jessica L Gross
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - R Shayn Martin
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - Jeffrey E Carter
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - J Wayne Meredith
- Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - Ralph D'Agostino
- Wake Forest Health Science Department of Biostatistical Sciences, Wake Forest University, Winston-Salem, NC
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194
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Disordered APP metabolism and neurovasculature in trauma and aging: Combined risks for chronic neurodegenerative disorders. Ageing Res Rev 2017; 34:51-63. [PMID: 27829172 DOI: 10.1016/j.arr.2016.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/20/2016] [Accepted: 11/04/2016] [Indexed: 11/20/2022]
Abstract
Traumatic brain injury (TBI), advanced age, and cerebral vascular disease are factors conferring increased risk for late onset Alzheimer's disease (AD). These conditions are also related pathologically through multiple interacting mechanisms. The hallmark pathology of AD consists of pathological aggregates of amyloid-β (Aβ) peptides and tau proteins. These molecules are also involved in neuropathology of several other chronic neurodegenerative diseases, and are under intense investigation in the aftermath of TBI as potential contributors to the risk for developing AD and chronic traumatic encephalopathy (CTE). The pathology of TBI is complex and dependent on injury severity, age-at-injury, and length of time between injury and neuropathological evaluation. In addition, the mechanisms influencing pathology and recovery after TBI likely involve genetic/epigenetic factors as well as additional disorders or comorbid states related to age and central and peripheral vascular health. In this regard, dysfunction of the aging neurovascular system could be an important link between TBI and chronic neurodegenerative diseases, either as a precipitating event or related to accumulation of AD-like pathology which is amplified in the context of aging. Thus with advanced age and vascular dysfunction, TBI can trigger self-propagating cycles of neuronal injury, pathological protein aggregation, and synaptic loss resulting in chronic neurodegenerative disease. In this review we discuss evidence supporting TBI and aging as dual, interacting risk factors for AD, and the role of Aβ and cerebral vascular dysfunction in this relationship. Evidence is discussed that Aβ is involved in cyto- and synapto-toxicity after severe TBI, and that its chronic effects are potentiated by aging and impaired cerebral vascular function. From a therapeutic perspective, we emphasize that in the fields of TBI- and aging-related neurodegeneration protective strategies should include preservation of neurovascular function.
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195
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McLafferty FS, Barmparas G, Ortega A, Roberts P, Ko A, Harada M, Nuño M, Black KL, Ley EJ. Predictors of improved functional outcome following inpatient rehabilitation for patients with traumatic brain injury. NeuroRehabilitation 2017; 39:423-30. [PMID: 27589512 DOI: 10.3233/nre-161373] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To determine factors associated with response to inpatient rehabilitation treatment among TBI patients. SETTING Inpatient rehabilitation service at a Level I trauma center. PARTICIPANTS Moderate-severe TBI patients ages ≥ 18years old admitted between January 1, 2002 and December 31, 2012. MAIN MEASURES Response to inpatient rehabilitation, measured by the Functional Independence Measure (FIM) score. DESIGN Retrospective cohort study. RESULTS Of 1,984 patients treated for TBI, 184 (10.8%) underwent inpatient rehabilitation. The largest proportion of patients improved in mobility (98.9%), followed by self-care (93.7%), communication/social cognition (84.0%), and sphincter control (65.7%). Of these, 99 (53.8%) improved by 2 or more levels of functional independence and were considered rehabilitation responders. Responders were younger (53.1 years vs. 63.8, p < 0.01), had longer average rehabilitation stays (15.4 days vs. 12.2, p < 0.01), and were less likely to have an admission SBP <100 mmHg (7.1% vs. 17.1%, p = 0.01). On multivariate analysis, normotension at admission (AOR 0.06, p = 0.01) and longer rehabilitation LOS (AOR 1.11, p < 0.01) were associated with a response to inpatient rehabilitation. CONCLUSION Of the TBI patients who qualified for same-center inpatient rehabilitation, approximately half responded to treatment. Longer rehabilitation time and normotension at admission predicted response to rehabilitation. Further efforts are necessary to identify and optimize TBI patients for inpatient rehabilitation.
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Affiliation(s)
- Fred S McLafferty
- Center for Neurosurgical Outcomes Research, Maxine Dunitz Neurosurgical Institute Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Galinos Barmparas
- Department of Surgery, Division of Acute Care Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Alicia Ortega
- Center for Neurosurgical Outcomes Research, Maxine Dunitz Neurosurgical Institute Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Pamela Roberts
- Department of Physical Medicine and Rehabilitation, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Ara Ko
- Department of Surgery, Division of Acute Care Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Megan Harada
- Department of Surgery, Division of Acute Care Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Miriam Nuño
- Center for Neurosurgical Outcomes Research, Maxine Dunitz Neurosurgical Institute Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Keith L Black
- Center for Neurosurgical Outcomes Research, Maxine Dunitz Neurosurgical Institute Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Eric J Ley
- Department of Surgery, Division of Acute Care Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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196
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Lee JJ, Segar DJ, Morrison JF, Mangham WM, Lee S, Asaad WF. Subdural hematoma as a major determinant of short-term outcomes in traumatic brain injury. J Neurosurg 2017; 128:236-249. [PMID: 28186445 DOI: 10.3171/2016.5.jns16255] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Early radiographic findings in patients with traumatic brain injury (TBI) have been studied in hopes of better predicting injury severity and outcome. However, prior attempts have generally not considered the various types of intracranial hemorrhage in isolation and have typically not excluded patients with potentially confounding extracranial injuries. Therefore, the authors examined the associations of various radiographic findings with short-term outcome to assess the potential utility of these findings in future prognostic models. METHODS The authors retrospectively identified 1716 patients who had experienced TBI without major extracranial injuries, and categorized them into the following TBI subtypes: subdural hematoma (SDH), traumatic subarachnoid hemorrhage, intraparenchymal hemorrhage (which included intraventricular hemorrhage), and epidural hematoma. They specifically considered isolated forms of hemorrhage, in which only 1 subtype was present. RESULTS In general, the presence of an isolated SDH was more likely to result in worse outcomes than the presence of other isolated forms of traumatic intracranial hemorrhage. Discharge to home was less likely and perihospital mortality rates were generally higher in patients with SDH. These findings were not simply related to age and were not fully captured by the admission Glasgow Coma Scale (GCS) score. The presence of SDH had a much higher sensitivity for poor outcome than the presence of other TBI subtypes, and was more sensitive for these poor outcomes than having a low GCS score (3-8). CONCLUSIONS In these ways, SDH was the most important finding associated with poor outcome, and the authors show that consideration of SDH, specifically, can augment age and GCS score in classification and prognostic models for TBI.
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Affiliation(s)
| | | | - John F Morrison
- 1Warren Alpert Medical School of Brown University.,2Department of Neurosurgery, Rhode Island Hospital
| | | | - Shane Lee
- 3Brown Institute for Brain Science.,4Department of Neuroscience, Brown University; and
| | - Wael F Asaad
- 1Warren Alpert Medical School of Brown University.,2Department of Neurosurgery, Rhode Island Hospital.,3Brown Institute for Brain Science.,4Department of Neuroscience, Brown University; and.,5Norman Prince Neurosciences Institute, Rhode Island Hospital, Providence, Rhode Island
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197
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Abstract
Neurologic diseases are a major cause of death and disability in elderly patients. Due to the physiologic changes and increased comorbidities that occur as people age, neurologic diseases are more common in geriatric patients and a major cause of death and disability in this population. This article discusses the elderly patient presenting to the emergency department with acute ischemic stroke, transient ischemic attack, intracerebral hemorrhage, subarachnoid hemorrhage, chronic subdural hematoma, traumatic brain injury, seizures, and central nervous system infections. This article reviews the subtle presentations, difficult workups, and complicated treatment decisions as they pertain to our older patients."
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Affiliation(s)
- Lauren M Nentwich
- Department of Emergency Medicine, Boston Medical Center, Dowling 1 South, 1 Boston Medical Center Place, Boston, MA 02143, USA.
| | - Benjamin Grimmnitz
- Department of Emergency Medicine, Boston Medical Center, Dowling 1 South, 1 Boston Medical Center Place, Boston, MA 02143, USA
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198
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Portbury SD, Hare DJ, Sgambelloni CJ, Bishop DP, Finkelstein DI, Doble PA, Adlard PA. Age modulates the injury-induced metallomic profile in the brain. Metallomics 2017; 9:402-410. [DOI: 10.1039/c6mt00260a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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199
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Kahveci K, Dinçer M, Doger C, Yaricı AK. Traumatic brain injury and palliative care: a retrospective analysis of 49 patients receiving palliative care during 2013-2016 in Turkey. Neural Regen Res 2017; 12:77-83. [PMID: 28250751 PMCID: PMC5319246 DOI: 10.4103/1673-5374.198987] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Traumatic brain injury (TBI), which is seen more in young adults, affects both patients and their families. The need for palliative care in TBI and the limits of the care requirement are not clear. The aim of this study was to investigate the length of stay in the palliative care center (PCC), Turkey, the status of patients at discharge, and the need for palliative care in patients with TBI. The medical records of 49 patients with TBI receiving palliative care in PCC during 2013–2016 were retrospectively collected, including age and gender of patients, the length of stay in PCC, the cause of TBI, diagnosis, Glasgow Coma Scale score, Glasgow Outcome Scale score, Karnofsky Performance Status score, mobilization status, nutrition route (oral, percutaneous endoscopic gastrostomy), pressure ulcers, and discharge status. These patients were aged 45.4 ± 20.2 years. The median length of stay in the PCC was 34.0 days. These included TBI patients had a Glasgow Coma Scale score ≤ 8, were not mobilized, received tracheostomy and percutaneous endoscopic gastrostomy nutrition, and had pressure ulcers. No difference was found between those who were discharged to their home or other places (rehabilitation centre, intensive care unit and death) in respect of mobilization, percutaneous endoscopic gastrostomy, tracheostomy and pressure ulcers. TBI patients who were followed up in PCC were determined to be relatively young patients (45.4 ± 20.2 years) with mobilization and nutrition problems and pressure ulcer formation. As TBI patients have complex health conditions that require palliative care from the time of admittance to intensive care unit, provision of palliative care services should be integrated with clinical applications.
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Affiliation(s)
- Kadriye Kahveci
- Department of Anesthesiology and Reanimation, Ankara Ulus State Hospital, Ankara, Turkey
| | - Metin Dinçer
- Health Institutions Management, Yıldırım Beyazıt University, Faculty of Health Sciences, Ankara, Turkey; Ankara Ulus State Hospital, Ankara, Turkey
| | - Cihan Doger
- Department of Anesthesiology and Reanimation, Ankara Ataturk Training and Research Hospital, Ankara, Turkey
| | - Ayse Karhan Yaricı
- Department of Anesthesiology and Reanimation, Ankara Ulus State Hospital, Ankara, Turkey
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Ziebell JM, Rowe RK, Muccigrosso MM, Reddaway JT, Adelson PD, Godbout JP, Lifshitz J. Aging with a traumatic brain injury: Could behavioral morbidities and endocrine symptoms be influenced by microglial priming? Brain Behav Immun 2017; 59:1-7. [PMID: 26975888 DOI: 10.1016/j.bbi.2016.03.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 03/01/2016] [Accepted: 03/11/2016] [Indexed: 12/20/2022] Open
Abstract
A myriad of factors influence the developmental and aging process and impact health and life span. Mounting evidence indicates that brain injury, even moderate injury, can lead to lifetime of physical and mental health symptoms. Therefore, the purpose of this mini-review is to discuss how recovery from traumatic brain injury (TBI) depends on age-at-injury and how aging with a TBI affects long-term recovery. TBI initiates pathophysiological processes that dismantle circuits in the brain. In response, reparative and restorative processes reorganize circuits to overcome the injury-induced damage. The extent of circuit dismantling and subsequent reorganization depends as much on the initial injury parameters as other contributing factors, such as genetics and age. Age-at-injury influences the way the brain is able to repair itself, as a result of developmental status, extent of cellular senescence, and injury-induced inflammation. Moreover, endocrine dysfunction can occur with TBI. Depending on the age of the individual at the time of injury, endocrine dysfunction may disrupt growth, puberty, influence social behaviors, and possibly alter the inflammatory response. In turn, activation of microglia, the brain's immune cells, after injury may continue to fuel endocrine dysfunction. With age, the immune system develops and microglia become primed to subsequent challenges. Sustained inflammation and microglial activation can continue for weeks to months post-injury. This prolonged inflammation can influence developmental processes, behavioral performance and age-related decline. Overall, brain injury may influence the aging process and expedite glial and neuronal alterations that impact mental health.
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Affiliation(s)
- Jenna M Ziebell
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, Tasmania, Australia; Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA.
| | - Rachel K Rowe
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA; Neuroscience Graduate Program, Arizona State University, Tempe, AZ, USA
| | | | - Jack T Reddaway
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA; University of Bath, Department of Biology and Biochemistry, Bath, United Kingdom
| | - P David Adelson
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA; University of Bath, Department of Biology and Biochemistry, Bath, United Kingdom
| | - Jonathan P Godbout
- Department of Neuroscience, Ohio State University, Columbus, OH, USA; Center for Brain and Spinal Cord Repair, Ohio State University, Columbus, OH, USA; Institute for Behavioral Medicine Research, Ohio State University, Columbus, OH, USA
| | - Jonathan Lifshitz
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA; Neuroscience Graduate Program, Arizona State University, Tempe, AZ, USA; VA Healthcare System, Phoenix, AZ, USA
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