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Concussion, mild traumatic brain injury

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https://www.readbyqxmd.com/read/28338593/clinical-correlates-to-assist-with-cte-diagnosis-insights-from-a-novel-rodent-repeat-concussion-model
#1
Gretchen M Thomsen, Ara Ko, Megan Y Harada, Annie Ma, Livia Wyss, Patricia Haro, Jean-Philippe Vit, Pablo Avalos, Navpreet Dhillon, Noell Cho, Oksana Shelest, Eric J Ley
INTRODUCTION: Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease linked to repetitive head injuries. CTE symptoms include changes in mood, behavior, cognition and motor function, however CTE is only currently diagnosed post-mortem. Using a rat model of recurrent traumatic brain injury (TBI) we demonstrate rodent deficits that predict the severity of CTE-like brain pathology. METHODS: Bilateral, closed skull, mild TBI was administered once per week to 35 WT rats, 8 rats received 2 injuries ('2xTBI'), 27 rats received 5 injuries ('5xTBI') and 13 rats were sham controls...
March 23, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28337734/diffusion-tensor-imaging-dti-findings-in-adult-civilian-military-and-sport-related-mild-traumatic-brain-injury-mtbi-a-systematic-critical-review
#2
Breton Michael Asken, Steven T DeKosky, James R Clugston, Michael S Jaffee, Russell M Bauer
This review seeks to summarize diffusion tensor imaging (DTI) studies that have evaluated structural changes attributed to the mechanisms of mild traumatic brain injury (mTBI) in adult civilian, military, and athlete populations. Articles from 2002 to 2016 were retrieved from PubMed/MEDLINE, EBSCOhost, and Google Scholar, using a Boolean search string containing the following terms: "diffusion tensor imaging", "diffusion imaging", "DTI", "white matter", "concussion", "mild traumatic brain injury", "mTBI", "traumatic brain injury", and "TBI"...
March 24, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28314862/epidemiology-and-prognosis-of-mild-traumatic-brain-injury-in-returning-soldiers-a-cohort-study
#3
Karen Schwab, Heidi P Terrio, Lisa A Brenner, Renee M Pazdan, Henry P McMillan, Margaret MacDonald, Sidney R Hinds, Ann I Scher
OBJECTIVE: Mild traumatic brain injury (mTBI; concussion) is common in returning service members yet limited definitive evidence exists on its prognosis. METHODS: Almost 25,000 non-medically evacuated soldiers returning from Afghanistan or Iraq to 2 military bases between 2009 and 2014 were screened for mTBI. We invited a random sample to participate in the present study, oversampling those screening positive, resulting in 557 mTBI cases and 1,010 controls, of whom 366 cases and 599 controls completed 3-month follow-up evaluations...
March 17, 2017: Neurology
https://www.readbyqxmd.com/read/28301824/using-a-dual-task-protocol-to-investigate-motor-and-cognitive-performance-in-healthy-children-and-youth
#4
Tracy L Fabri, Katherine E Wilson, Nicole Holland, Andrea Hickling, James Murphy, Philippe Fait, Nick Reed
OBJECTIVES: Mild traumatic brain injury (or concussion) is a prevalent yet understudied health concern in children and youth. This injury can cause dysfunction in both motor and cognitive domains; however, most literature focuses on single-task neuropsychological tests which only assess cognition. Although dual-task research on concussed children and youth is needed as many daily activities require both motor and cognitive domains, we must first investigate whether performing simultaneous motor and cognitive tasks of varied complexity impact these domains in healthy children and youth...
March 6, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28298170/concussion-induces-hippocampal-circuitry-disruption-in-swine
#5
John A Wolf, Brian N Johnson, Victoria E Johnson, Mary E Putt, Kevin D Browne, Constance J Mietus, Daniel P Brown, Kathryn L Wofford, Douglas H Smith, M Sean Grady, Akiva S Cohen, D Kacy Cullen
Hippocampal-dependent deficits in learning and memory formation are a prominent feature of traumatic brain injury (TBI), however the role of the hippocampus in cognitive dysfunction after concussion (mild TBI) is unknown. We therefore investigated functional and structural changes in the swine hippocampus following TBI using a model of head rotational acceleration that closely replicates the biomechanics and neuropathology of closed-head TBI in humans. We examined neurophysiological changes using a novel ex vivo hippocampal slice paradigm with extracellular stimulation and recording in the dentate gyrus and CA1 occurring at 7 days following non-impact inertial TBI in swine...
March 16, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28296510/multidisciplinary-outpatient-treatment-in-patients-with-mild-traumatic-brain-injury-a-randomised-controlled-intervention-study
#6
Eirik Vikane, Torgeir Hellstrøm, Cecilie Røe, Erik Bautz-Holter, Jörg Aßmus, Jan Sture Skouen
OBJECTIVE: To evaluate the efficacy of a multidisciplinary outpatient follow-up programme compared to follow-up by a general practitioner for patients being at-risk or sick-listed with persistent post-concussion symptoms two months after a mild traumatic brain injury. DESIGN: Randomised controlled trial. PATIENTS: One hundred fifty-one patients, 16-56 years. METHODS: Multidisciplinary outpatient rehabilitation with individual contacts and a psycho-educational group intervention at two outpatient rehabilitation clinics compared to follow-up by a general practitioner after the multidisciplinary examination...
March 15, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28287287/reporting-of-symptoms-associated-with-concussion-by-oef-oif-ond-veterans-comparison-between-research-and-clinical-contexts
#7
Colleen E Jackson, Leslie Nordstrom, Jennifer R Fonda, Catherine B Fortier, William P Milberg, Regina E McGlinchey
OBJECTIVE: Veterans from recent military conflicts frequently report persisting symptoms associated with concussion well beyond the expected period of recovery following mild traumatic brain injury. This study examined differences in the reporting of symptoms associated with concussion between clinical and research contexts. METHODS: This naturalistic comparison included 91 Veterans from Operations Enduring Freedom (OEF), Iraqi Freedom (OIF) and New Dawn (OND). All participants were enrolled in a longitudinal study focused on traumatic brain injury and stress-related disorders and had also completed a VHA Comprehensive TBI Evaluation...
March 13, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28281095/a-national-study-on-the-effects-of-concussion-in-collegiate-athletes-and-us-military-service-academy-members-the-ncaa-dod-concussion-assessment-research-and-education-care-consortium-structure-and-methods
#8
Steven P Broglio, Michael McCrea, Thomas McAllister, Jaroslaw Harezlak, Barry Katz, Dallas Hack, Brian Hainline
BACKGROUND: The natural history of mild traumatic brain injury (TBI) or concussion remains poorly defined and no objective biomarker of physiological recovery exists for clinical use. The National Collegiate Athletic Association (NCAA) and the US Department of Defense (DoD) established the Concussion Assessment, Research and Education (CARE) Consortium to study the natural history of clinical and neurobiological recovery after concussion in the service of improved injury prevention, safety and medical care for student-athletes and military personnel...
March 9, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28269244/portable-video-oculography-device-for-implementation-in-sideline-concussion-assessments-a-prototype
#9
Joshua D Fischer, Dawie J van den Heever
Concussion is currently a serious health problem and can lead to severe brain dysfunction. There is a definite need for sensitive and reliable tests to detect and evaluate the subtle changes in brain function caused by concussion. This study details the development of a low cost portable eye tracking device that can aid in the detection of concussions. The device evaluates ocular motor function and can be used on the sidelines of sporting events to give a quick indication of the severity of head trauma. It can further be used to evaluate and monitor mild Traumatic Brain Injuries and aid in the return to play decision making process...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28243574/5-year-imaging-sequelae-of-concussive-blast-injury-and-relation-to-early-clinical-outcome
#10
Christine L Mac Donald, Jason Barber, Jalal Andre, Nicole Evans, Chris Panks, Samantha Sun, Kody Zalewski, R Elizabeth Sanders, Nancy Temkin
Current imaging diagnostic techniques are often insensitive to the underlying pathological changes following mild traumatic brain injury (TBI) or concussion so much so that the explicit definition of these uncomplicated mild brain injuries includes the absence of radiological findings. In the US military, this is complicated by the natural tendency of service members to down play symptoms for fear of removal from their unit particularly in combat making it challenging for clinicians to definitively diagnose and determine course of treatment...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28239838/which-matters-more-a-retrospective-cohort-study-of-headache-characteristics-and-diagnosis-type-in-soldiers-with-mtbi-concussion
#11
Alan G Finkel, Brian J Ivins, Juanita A Yerry, John S Klaric, Ann Scher, Y Sammy Choi
OBJECTIVE: To describe the diagnostic types and characteristics of headaches in soldiers with mild traumatic brain injury during the wars in Afghanistan and Iraq. BACKGROUND: Persistent post-traumatic headache interferes with returns to activity or duty. The most commonly cited headache diagnosis after concussion is migraine. We hypothesize that headache diagnosis type, eg, migraine, is not sufficient to predict relationships with occupational outcomes after concussion...
February 27, 2017: Headache
https://www.readbyqxmd.com/read/28228694/survey-of-primary-contact-medical-and-chiropractic-clinicians-on-self-reported-knowledge-and-recognition-of-mild-traumatic-brain-injuries-a-pilot-study
#12
David N Taylor, Frank J Ponce, Stephen J Dyess
OBJECTIVE: The purpose of this study was to assess the self-reported knowledge of concussion recognition and treatment with first-contact family medical and chiropractic practitioners by means of a pilot study of the need, construct validity, and feasibility for further investigation of mild traumatic brain injury (MTBI) knowledge base. METHODS: Two hundred forty-eight practicing chiropractic and 120 medical physicians in the south and northeastern sections of the United States were contacted by e-mail, telephone, and postal mail to answer an 18-item survey on knowledge, diagnosis, and common practice with respect to traumatic brain injury patients...
March 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/28227478/portable-video-oculography-device-for-implementation-in-sideline-concussion-assessments-a-prototype
#13
Joshua D Fischer, Dawie J van den Heever, Joshua D Fischer, Dawie J van den Heever, Dawie J Van den Heever, Joshua D Fischer
Concussion is currently a serious health problem and can lead to severe brain dysfunction. There is a definite need for sensitive and reliable tests to detect and evaluate the subtle changes in brain function caused by concussion. This study details the development of a low cost portable eye tracking device that can aid in the detection of concussions. The device evaluates ocular motor function and can be used on the sidelines of sporting events to give a quick indication of the severity of head trauma. It can further be used to evaluate and monitor mild Traumatic Brain Injuries and aid in the return to play decision making process...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222567/immune-biomarkers-for-the-diagnosis-of-mild-traumatic-brain-injury
#14
Ashley B Petrone, Valerie Gionis, Richard Giersch, Taura L Barr
BACKGROUND: In 2010, there were approximately 2.2 million emergency room visits associated with traumatic brain injury (TBI), with 80 percent diagnosed as mild TBI or concussion. In addition, there are a large number of TBIs, especially mild TBIs, which go either unreported by patients or initially undiagnosed by clinicians. Our team has previously identified a panel of immune-related genes that can diagnose ischemic stroke at triage, and due to shared pathophysiological mechanisms of TBI and stroke, we hypothesized that this panel of genes may also be utilized for the diagnosis of TBI...
February 10, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28217290/neuroprotective-effect-of-hyperbaric-oxygen-therapy-in-a-juvenile-rat-model-of-repetitive-mild-traumatic-brain-injury
#15
Lei Huang, Andre Obenaus, Mary Hamer, John H Zhang
Repetitive mild traumatic brain injury (rmTBI) is an important medical concern for adolescent athletes that can lead to long-term disabilities. Multiple mild injuries may exacerbate tissue damage resulting in cumulative brain injury and poor functional recovery. In the present study, we investigated the increased brain vulnerability to rmTBI and the effect of hyperbaric oxygen treatment using a juvenile rat model of rmTBI. Two episodes of mild cortical controlled impact (3 days apart) were induced in juvenile rats...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28207508/concussion-mild-traumatic-brain-injury-related-chronic-pain-in-males-and-females-a-diagnostic-modelling-study
#16
Tatyana Mollayeva, J David Cassidy, Colin M Shapiro, Shirin Mollayeva, Angela Colantonio
Pain is an unpleasant, complex, and perceived experience that places a significant burden on patients and clinicians. Its severity may be mediated by emotion, attitude, and environmental influences, and pain may be expressed differently in males and females. Traumatic brain injury (TBI) is frequently associated with chronic pain. This diagnostic modeling study examined sex differences in the construct of chronic pain in patients with delayed recovery from concussion/mild traumatic brain injury (mTBI).Data were collected from standardized questionnaires, neuroimaging records, and comprehensive clinical assessments...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28188778/work-limitations-four-years-following-mild-traumatic-brain-injury-a-cohort-study
#17
Alice Theadom, Suzanne Barker-Collo, Kelly Jones, Michael Kahan, Braden Te Ao, Kathryn McPherson, Nicola Starkey, Valery Feigin
OBJECTIVE: To explore employment status, work limitations and productivity loss following mild traumatic brain injury (TBI). STUDY DESIGN: Inception cohort study over four years. SETTING: General community. PARTICIPANTS: 245 Adults (>16 years at the time of injury), who experienced a mild TBI and who were employed prior to their injury. INTERVENTIONS: Not applicable MAIN OUTCOME MEASURES: Details of the injury, demographic information and pre-injury employment status were collected from medical records and self-report...
February 7, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28182530/is-state-anxiety-trait-anxiety-or-anxiety-sensitivity-a-clinical-predictor-of-symptoms-in-those-presenting-with-mild-traumatic-brain-injury-or-concussion
#18
Krista M Hixson, Alex N Allen, Andrew S Williams, Tamara C Valovich McLeod
No abstract text is available yet for this article.
February 9, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28176234/frequent-mild-head-injury-promotes-trigeminal-sensitivity-concomitant-with-microglial-proliferation-astrocytosis-and-increased-neuropeptide-levels-in-the-trigeminal-pain-system
#19
Ashley L Tyburski, Lan Cheng, Soroush Assari, Kurosh Darvish, Melanie B Elliott
BACKGROUND: Frequent mild head injuries or concussion along with the presence of headache may contribute to the persistence of concussion symptoms. METHODS: In this study, the acute effects of recovery between mild head injuries and the frequency of injuries on a headache behavior, trigeminal allodynia, was assessed using von Frey testing up to one week after injury, while histopathological changes in the trigeminal pain pathway were evaluated using western blot, ELISA and immunohistochemistry...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28170134/mild-traumatic-brain-injury-is-something-missing-when-comparing-cognitive-rest-and-graduated-return-to-usual-activities-versus-usual-care
#20
Vaitsa Giannouli
I read with great interest the article by Varner et al.(1) which aims to determine in a simple, concise, and neat way if mild traumatic brain injury (MTBI) patients randomized to graduated return to usual activity discharge instructions have a decrease in their Post Concussion Symptom Score (PCSS) two weeks after MTBI, compared to patients who receive usual care MTBI discharge instructions. This article is protected by copyright. All rights reserved.
February 7, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
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