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King Devick

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60 papers 25 to 100 followers
By David Rhine MD FRCPC. Emergency medicine. Special interest in concussion management.
https://www.readbyqxmd.com/read/28716270/rapid-sideline-performance-meets-outpatient-clinic-results-from-a-multidisciplinary-concussion-center-registry
#1
G Kyle Harrold, Lisena Hasanaj, Nicholas Moehringer, Isis Zhang, Rachel Nolan, Liliana Serrano, Jenelle Raynowska, Janet C Rucker, Steven R Flanagan, Dennis Cardone, Steven L Galetta, Laura J Balcer
OBJECTIVE: This study investigated the utility of sideline concussion tests, including components of the Sports Concussion Assessment Tool, 3rd Edition (SCAT3) and the King-Devick (K-D), a vision-based test of rapid number naming, in an outpatient, multidisciplinary concussion center treating patients with both sports-related and non-sports related concussions. The ability of these tests to predict clinical outcomes based on the scores at the initial visit was evaluated. METHODS: Scores for components of the SCAT3 and the K-D were fit into regression models accounting for age, gender, and sport/non-sport etiology in order to predict clinical outcome measures including total number of visits to the concussion center, whether the patient reached a SCAT3 symptom severity score≤7, and the total types of referrals each patient received over their course...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28679302/an-evidence-based-approach-to-the-creation-of-normative-data-base-rates-of-impaired-scores-within-a-brief-neuropsychological-battery-argue-for-age-corrections-but-against-corrections-for-medical-conditions
#2
Megan E O'Connell, Holly Tuokko, Stacey Voll, Martine Simard, Lauren E Griffith, Vanessa Taler, Christina Wolfson, Susan Kirkland, Parminder Raina
OBJECTIVE: We detail a new approach to the creation of normative data for neuropsychological tests. The traditional approach to normative data creation is to make demographic adjustments based on observations of correlations between single neuropsychological tests and selected demographic variables. We argue, however, that this does not describe the implications for clinical practice, such as increased likelihood of misclassification of cognitive impairment, nor does it elucidate the impact on decision-making with a neuropsychological battery...
July 5, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28630809/technical-report-of-the-use-of-a-novel-eye-tracking-system-to-measure-impairment-associated-with-mild-traumatic-brain-injury
#3
Michael Kelly
This technical report details the results of an uncontrolled study of EyeGuide Focus, a 10-second concussion management tool which relies on eye tracking to determine the potential impairment of visual attention, an indicator often of mild traumatic brain injury (mTBI). Essentially, people who can visually keep steady and accurate attention on a moving object in their environment likely suffer from no impairment. However, if after a potential mTBI event, subjects cannot keep attention on a moving object in a normal way as demonstrated on their previous healthy baseline tests...
May 15, 2017: Curēus
https://www.readbyqxmd.com/read/28634467/brain-network-activation-technology-does-not-assist-with-concussion-diagnosis-and-return-to-play-in-football-athletes
#4
Steven P Broglio, Richelle Williams, Andrew Lapointe, Ashley Rettmann, Brandon Moore, Sean K Meehan, James T Eckner
BACKGROUND: Concussion diagnosis and management remains a largely subjective process. This investigation sought to evaluate the utility of a novel neuroelectric measure for concussion diagnosis and return to play decision-making. HYPOTHESIS: Brain Network Activation (BNA) scores obtained within 72-h of injury will be lower than the athlete's preseason evaluation and that of a matched control athlete; and the BNA will demonstrate ongoing declines at the return to play and post-season time points, while standard measures will have returned to pre-injury and control athlete levels...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28574312/elevated-intracranial-pressure-and-reversible-eye-tracking-changes-detected-while-viewing-a-film-clip
#5
Radek Kolecki, Vikalpa Dammavalam, Abdullah Bin Zahid, Molly Hubbard, Osamah Choudhry, Marleen Reyes, ByoungJun Han, Tom Wang, Paraskevi Vivian Papas, Aylin Adem, Emily North, David T Gilbertson, Douglas Kondziolka, Jason H Huang, Paul P Huang, Uzma Samadani
OBJECTIVE The precise threshold differentiating normal and elevated intracranial pressure (ICP) is variable among individuals. In the context of several pathophysiological conditions, elevated ICP leads to abnormalities in global cerebral functioning and impacts the function of cranial nerves (CNs), either or both of which may contribute to ocular dysmotility. The purpose of this study was to assess the impact of elevated ICP on eye-tracking performed while patients were watching a short film clip. METHODS Awake patients requiring placement of an ICP monitor for clinical purposes underwent eye tracking while watching a 220-second continuously playing video moving around the perimeter of a viewing monitor...
June 2, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28515977/establishing-normative-change-values-in-visual-acuity-loss-during-the-dynamic-visual-acuity-test
#6
Chris Marquez, Monica Lininger, Scot Raab
BACKGROUND: Baseline visual acuity (VA) loss from static to dynamic head conditions assessed using the Dynamic Visual Acuity Testing (DVAT) have not been established in NCAA football players. DVAT assesses the Vestibulo-Ocular Reflex (VOR) which is measured in Logarithm of the Minimum Angle of Resolution (logMAR). Decreased VA beyond baseline measures may detect VOR impairment and impact treatment protocols and assist in return to play decisions post-concussion. HYPOTHESIS/PURPOSE: To establish normative VA mean scores during a static head posture as well as dynamically during the DVAT with a head speed of 150 deg/s in the pitch (vertical) and yaw (horizontal) planes rotating 20 degrees in each direction...
April 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28511593/convergence-insufficiency-identifies-athletes-at-risk-of-prolonged-recovery-from-sport-related-concussion
#7
Kevin M DuPrey, David Webner, Adam Lyons, Crystal H Kucuk, Jeffrey T Ellis, Peter F Cronholm
BACKGROUND: Sensitive and specific screening methods are needed to identify athletes at risk of prolonged recovery after sport-related concussion (SRC). Convergence insufficiency (CI) is a common finding in concussed athletes. PURPOSE: To assess the relationship between CI and recovery after SRC at the initial office visit. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: In this retrospective cohort study, 270 athletes (147 male, 123 female), mean ± SD age 14...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28446457/consensus-statement-on-concussion-in-sport-the-5-th-international-conference-on-concussion-in-sport-held-in-berlin-october-2016
#8
Paul McCrory, Willem Meeuwisse, Jiří Dvorak, Mark Aubry, Julian Bailes, Steven Broglio, Robert C Cantu, David Cassidy, Ruben J Echemendia, Rudy J Castellani, Gavin A Davis, Richard Ellenbogen, Carolyn Emery, Lars Engebretsen, Nina Feddermann-Demont, Christopher C Giza, Kevin M Guskiewicz, Stanley Herring, Grant L Iverson, Karen M Johnston, James Kissick, Jeffrey Kutcher, John J Leddy, David Maddocks, Michael Makdissi, Geoff T Manley, Michael McCrea, William P Meehan, Sinji Nagahiro, Jon Patricios, Margot Putukian, Kathryn J Schneider, Allen Sills, Charles H Tator, Michael Turner, Pieter E Vos
No abstract text is available yet for this article.
April 26, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28387548/review-of-vestibular-and-oculomotor-screening-and-concussion-rehabilitation
#9
REVIEW
Anthony P Kontos, Jamie McAllister Deitrick, Michael W Collins, Anne Mucha
Vestibular and oculomotor impairment and symptoms may be associated with worse outcomes after sport-related concussion (SRC), including prolonged recovery. In this review, we evaluate current findings on vestibular and oculomotor impairments as well as treatment approaches after SRC, and we highlight areas in which investigation is needed. Clinical researchers have intimated that recovery from SRC may follow certain clinical profiles that affect the vestibular and oculomotor pathways. Identifying clinical profiles may help to inform better treatment and earlier intervention to reduce recovery time after SRC...
March 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28387693/visual-vestibular-processing-deficits-in-mild-traumatic-brain-injury
#10
W G Wright, R T Tierney, J McDevitt
BACKGROUND: The search for reliable and valid signs and symptoms of mild traumatic brain injury (mTBI), commonly synonymous with concussion, has lead to a growing body of evidence that individuals with long-lasting, unremitting impairments often experience visual and vestibular symptoms, such as dizziness, postural and gait disturbances. OBJECTIVE: Investigate the role of visual-vestibular processing deficits following concussion. METHODS: A number of clinically accepted vestibular, oculomotor, and balance assessments as well as a novel virtual reality (VR)-based balance assessment device were used to assess adults with post-acute concussion (n = 14) in comparison to a healthy age-matched cohort (n = 58)...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/28362161/test-retest-reliability-of-the-king-devick-test-in-an-adolescent-population
#11
Tyler J Oberlander, Bernadette L Olson, Lee Weidauer
CONTEXT:   The King-Devick (KD) test is a screening tool designed to assess cognitive visual impairments, namely saccadic rhythm, postconcussion. Test-retest reliability of the KD in a healthy adolescent population has not yet been established. OBJECTIVE:   To investigate the overall test-retest reliability of the KD among a sample of healthy adolescents. Additionally, we sought to determine if sex and age influenced reliability. DESIGN:   Cross-sectional study...
May 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28270437/what-are-the-critical-elements-of-sideline-screening-that-can-be-used-to-establish-the-diagnosis-of-concussion-a-systematic-review
#12
REVIEW
Jon Patricios, Gordon Ward Fuller, Richard Ellenbogen, Stanley Herring, Jeffrey S Kutcher, Mike Loosemore, Michael Makdissi, Michael McCrea, Margot Putukian, Kathryn J Schneider
BACKGROUND: Sideline detection is the first and most significant step in recognising a potential concussion and removing an athlete from harm. This systematic review aims to evaluate the critical elements aiding sideline recognition of potential concussions including screening tools, technologies and integrated assessment protocols. DATA SOURCES: Bibliographic databases, grey literature repositories and relevant websites were searched from 1 January 2000 to 30 September 2016...
March 7, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28258820/the-king-devick-k-d-test-and-concussion-diagnosis-in-semi-professional-rugby-union-players
#13
John H Molloy, Ian Murphy, Conor Gissane
OBJECTIVES: To determine the utility of the King-Devick (K-D) test in identifying sports-related concussion in semi-professional rugby players. DESIGN: Descriptive cohort study. METHODS: 176 male players were recruited from a semi-professional rugby union competition in New Zealand (NZ). Baseline K-D scores were obtained in the pre-season. Post-match K-D and Pitch Side Concussion Assessment Version 2 (PSCA2) scores were obtained in those with suspected concussion...
February 28, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28257277/the-effect-of-in-school-saccadic-training-on-reading-fluency-and-comprehension-in-first-and-second-grade-students
#14
David Dodick, Amaal J Starling, Jennifer Wethe, Yi Pang, Leonard V Messner, Craig Smith, Christina L Master, Rashmi B Halker-Singh, Bert B Vargas, Jamie M Bogle, Jay Mandrekar, Alexandra Talaber, Danielle Leong
Efficient eye movements provide a physical foundation for proficient reading skills. We investigated the effect of in-school saccadic training on reading performance. In this cross-over design, study participants (n = 327, 165 males; mean age [SD]: 7 y 6 mo [1y 1 mo]) were randomized into treatment and control groups, who then underwent eighteen 20-minute training sessions over 5 weeks using King-Devick Reading Acceleration Program Software. Pre- and posttreatment reading assessments included fluency, comprehension, and rapid number naming performance...
January 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28192036/using-acute-performance-on-a-comprehensive-neurocognitive-vestibular-and-ocular-motor-assessment-battery-to-predict-recovery-duration-after-sport-related-concussions
#15
Alicia M Sufrinko, Gregory F Marchetti, Paul E Cohen, R J Elbin, Valentina Re, Anthony P Kontos
BACKGROUND: A sport-related concussion (SRC) is a heterogeneous injury that requires a multifaceted and comprehensive approach for diagnosis and management, including symptom reports, vestibular/ocular motor assessments, and neurocognitive testing. PURPOSE: To determine which acute (eg, within 7 days) vestibular, ocular motor, neurocognitive, and symptom impairments predict the duration of recovery after an SRC. STUDY DESIGN: Cohort study (prognosis); Level of evidence, 2...
April 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27668641/academic-difficulty-and-vision-symptoms-in-children-with-concussion
#16
Mark W Swanson, Katherine K Weise, Laura E Dreer, James Johnston, Richard D Davis, Drew Ferguson, Matthew Heath Hale, Sara J Gould, Jennifer B Christy, Claudio Busettini, Sarah D Lee, Erin Swanson
PURPOSE: Academic difficulty is reported in children with prolonged post-concussive symptoms. Despite growing evidence that vestibular-ocular and vision-specific dysfunction are common in children after concussion, vision is rarely mentioned in return-to-learn protocols. The purpose of this project was to evaluate a cohort of children with prolonged post-concussive symptoms to determine if vision symptoms are associated with those reporting academic difficulty. METHODS: Data were obtained from the Children's of Alabama Concussion Clinic REDCap dataset from the period January 2007 to October 2013...
January 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28107216/analysis-of-central-and-peripheral-vision-reaction-times-in-patients-with-postconcussion-visual-dysfunction
#17
Joseph F Clark, James K Ellis, Timothy M Burns, John M Childress, Jon G Divine
OBJECTIVE: To determine whether central and peripheral vision reaction times (PVRTs) are prolonged in patients with visual dysfunction after sustaining a concussion. DESIGN: Comparison of Dynavision D2 central and PVRTs in patients with postconcussion visual dysfunction were compared with control data from a normative patient database. Concussion patients without visual dysfunction were not included in this study. SETTING: National Collegiate Athletic Association Division 1 college training room and university based, academic health center...
January 19, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28065993/the-utility-of-the-king-devick-test-as-a-sideline-assessment-tool-for-sport-related-concussions-a-narrative-review
#18
Scott Howitt, Robert Brommer, Justin Fowler, Logan Gerwing, Julian Payne, Christopher DeGraauw
OBJECTIVE: The objective of this paper is to review existing literature surrounding the utility of the King-Devick test which is a commonly used sideline assessment tool for sport-related concussions. METHODS: A review of the literature was performed using MEDLINE, CINHAL, and SportDiscus databases. The search was performed from the beginning of the record through November 16(th), 2015. RESULTS: This search strategy yielded 27 articles from aforementioned databases...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/27835042/cervical-injury-assessments-for-concussion-evaluation-a-review
#19
REVIEW
Kelly Cheever, Keisuke Kawata, Ryan Tierney, Anne Galgon
BACKGROUND: A concussion is a complex pathophysiologic process that is induced by biomechanical forces and affects the brain. Cervical injuries and concussion can share similar mechanisms and nearly identical symptoms or causes. Therefore, symptoms or causes alone may be insufficient to differentiate between patients with a concussion and patients with cervical injuries. OBJECTIVE: To demonstrate the homogeneous causes and symptoms observed in patients with a concussion and patients with cervical injury and to provide information on clinical tests that can differentiate cervical injury from pathologic conditions of vestibular or central origin...
December 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27834667/validity-and-reliability-of-the-vestibular-ocular-motor-screening-and-associations-with-common-concussion-screening-tools
#20
Amy M Yorke, Laura Smith, Mitch Babcock, Bara Alsalaheen
BACKGROUND: Sustaining a concussion commonly results in vestibular impairments that may be associated with balance deficits. To screen for vestibular impairments after a concussion, the Vestibular/Ocular Motor Screening (VOMS) tool was developed. The relationship between the VOMS and other concussion screening tools, such as the Balance Error Scoring System (BESS) and King-Devick (K-D), have not been explored. HYPOTHESES: (1) VOMS would provide reliable results and not provoke symptoms in healthy adolescents and (2) VOMS test items would measure related aspects of vestibular function that are not measured through the BESS or K-D...
March 2017: Sports Health
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