Demonstration and test cards for the King–Devick (K–D) Test: a rapid sideline screening tool for sports-related concussion based on the time to perform rapid. Background The King-Devick (KD) test is an objective clinical test of eye movements that has been used to screen for concussion. A rapid, cost-effective, and reliable tool that facilitates diagnosis of concussion is needed. The King-Devick (K-D) test is a vision-based tool of rapid number.

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King—Devick test identifies symptomatic concussion in real-time and asymptomatic concussion over time. It is important devlck note cpncussion no errors were made by non-concussed athletes in this study and in prior studies suggesting that worsening of time from baseline or any errors committed deserves further concussion assessment.

Neuropsychological impairment in amateur soccer players. The recognition and management of concussion in athletes can be difficult for a number of reasons. Postfight testing was delayed by 30 to 60 minutes for 3 fighters due to nonhead injuries. Address correspondence and reprint requests to Dr. J Neuropathol Exp Neurol. Branas report no disclosures.

MaddaMD, D. Curr Neurol Neurosci Rep. This may also have played a role in the disparity between average worsening among studies as previous work has shown that gender may be a risk factor for injury and may influence injury severity. On the sideline, if someone administers the [KD] test to an athlete, there is a suspicion of concussion already, so regardless of the test score, the athlete [should be] done until cleared.

The King-Devick test as a determinant of head trauma and concussion in boxers and MMA fighters

K—D scores post-workout showed faster kimg K—D scores The authors are grateful to the Wheaton College Sports Medicine staff for their support in study organization, implementation and testing xoncussion athletes. Fighters were tested on the day before the MMA event at the time of their weigh-ins. Boxers are at high risk for concussion and for more long-term manifestations of CTE, formerly termed dementia pugilistica.


A baseline score is established by testing a subject twice. Military Acute Concussion Evaluation. Support Center Support Center.

Ikng athletes performed slower on their sideline K—D test compared to baseline with an average slowing from baseline of 4. MaguirePhD, L.

The King–Devick test for sideline concussion screening in collegiate football

The King-Devick Test is a quick, accurate and objective concussion screening tool that can be administered on the sidelines by parents, coaches, athletic trainers, school nurses and medical professionals, and a Mayo Clinic study indicated it detects concussions and possible ‘silent’ concussions.

Baseline K—D test, median range. Assessing eye tracking features in hypoxic and isocapnic hypoxia with King—Devick test. IHSA has new concussion rule, but some critics demand more. Closed head injury, even in mild form, is a leading cause of both short-term and long-term cognitive impairment among athletes, particularly for those in contact sports such as football, boxing, soccer, rugby, and hockey. In tesg for the K-D test to be used effectively over time and to be administered by different testers, such as athletic trainers, the interrater and test-retest reliability of this condussion must be assessed.

Acknowledgments The authors are grateful to the Wheaton College Sports Medicine staff for their support in study organization, implementation and testing of athletes. Standardized instructions are used and participants are asked to read the numbers from left to right as quickly as they can without making any errors.

GalettaMD, and L. Data from this investigation demonstrate that the K-D test is an accurate and reliable method for identifying athletes with head trauma. Post-season testing demonstrated improvement of scores and was consistent with known learning effects Vision testing is additive to the sideline assessment of sports-related concussion. Documented head twst in early adulthood and risk of Alzheimer’s disease and other dementias.

Other studies 24,25 have shown improvement and return to baseline. Electrophysiological abnormalities in well functioning multiple concussed patients.

Please review our privacy policy. In fact, worsening by 5 seconds or more was a distinguishing characteristic noted only among the participants with head trauma. Hunt T, Asplund C. Prospective studies of collegiate athletes that are ongoing at the University of Pennsylvania will establish large-scale K-D test norms and expected ranges of precompetition scores for this age group, and will further investigate the capacity for K-D scores to capture closed head injury and concussion.

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Athletes were players from the football team and the men’s and women’s basketball teams. Phoenix, AZ — Concussions are in the national spotlight for the damage being done to student and professional athletes.

Balcerb Steven L. K—D testing data for concussed and non-concussed football players are shown in Table 2. The line within the box defines the median value. Assessment of metabolic brain damage and recovery following mild traumatic brain injury: Now he does a post test and if he has one error he is concussed, but his official baseline test devik he has to do it with no errors.

Mayo and King-Devick Test Have Licensing Agreement for Sideline Concussion Test

When to disqualify an athlete after a concussion. The median change in scores from prefight to postfight for participants who did not have head trauma was a 1. BranasPhD, M.

Ongoing large-scale longitudinal studies of collegiate athletes are examining the relation of K-D test scores and changes in scores over the course of a season with ImPACT and other formal cognitive testing.

Return-to-play criteria after athletic concussion: While the manifestations of postconcussion syndrome are devixk captured by extensive testing batteries such as ImPACT, 37 and may be influenced by intellectual ability or depression, tests of rapid number naming such as K-D represent an objective measure. Athletes routinely deny symptoms.

Prev post Next post. Open in a separate window. We investigated the K—D test as a sideline screening tool devidk a collegiate cohort to determine the effect of concussion.