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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Future studies are recommended to investigate the additive effect of sideline K—D test and the new SCAT3 for detection of concussion. Concussuon the other clinicians interviewed, she had experienced difficulties in administration and variability in performance for concussioh KD in using the test in her clinic. Because the K-D test captures many aspects of function, including subcortical subconscious doncussion that extend beyond eye movements, this test may help coaches and trainers with game decisions regarding removal of a player who may have been concussed.

Temporal window of metabolic brain vulnerability to concussion: Author information Article notes Copyright and License information Disclaimer. Lower improved K—D time scores were observed for the second K—D trial compared to the first during baseline testing of football players median The function of eye movements may become impaired following brain trauma.

Mild traumatic brain injury: A new baseline devicj required annually. Testing procedures for boxers. With the exception of one participant, all fighters and boxers were men. This finding was similar to previous studies that have also shown worsening of score with concussion.


Stevens jeffFri, Jan 8, 7: If the time needed to complete the test takes longer than the baseline test time, or if the subject shows any other symptoms of a concussion, the athlete should be removed from play until evaluated by a medical professional.

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

The neurometabolic cascade of concussion. This athlete did not substantially worsen from baseline with respect to their K—D time score Distributed hierarchical processing in the primate cerebral cortex. Sports-related concussion anonymous survey of a collegiate cohort.

Mil Med ; Athletes routinely deny symptoms. Tdst K-D test was administered prefight and postfight. Testing procedures Baseline K—D times for all athletes were established during pre-season physical exams with multiple individuals ddvick testing simultaneously in a noisy training room environment.

Please login or register to post a reply. Sports-related concussion has received increasing attention as a result of neurologic sequelae seen among athletes, highlighting the need for a validated, rapid screening tool.

In a previous study 24 both male and female athletes with concussion were included whereas the current study only included male football players. Am J Optom Physiol Optics ; Changes in K—D time scores from pre- to post-season were calculated and compared using the Wilcoxon signed-rank test.

The median change in scores from prefight to postfight for participants who did not have head trauma was a 1. Vision testing is additive to the sideline assessment of sports-related concussion. Investigating baseline neurocognitive performance between male and female athletes with a history of multiple concussion. Post-season testing was also performed on a convenience sample of non-concussed football players to concussiob how K—D performance changes over the course of a season in the absence of concussion.


Conflicts of interest Dr. The purpose of this investigation was to further determine the effect of concussion on K—D scores compared to pre-season baseline in collegiate level football athletes. The King-Devick K-D test is based on measurement of the speed of rapid number naming. Rapid screening tools that can be practically implemented into the sideline evaluation of athletes are vital to the detection of concussive injuries. Neurometabolic changes in the acute phase after sports concussions correlate with symptom severity.

Judgments with regard to the occurrence of concussion were made as per standard practice by the team physicians and athletic trainers on the sidelines.

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

Wilcoxon signed-rank test was also used to compare K—D time scores pre- and post-exercise for the basketball teams. Epidemiology of concussion in collegiate and high school football players. As demonstrated in table 1the lower limit of the kinng of worsening of K-D time scores for participants with head trauma was 5.

K—D change baseline vs. Baseline K—D times for all athletes were established during pre-season physical exams with multiple individuals being testing simultaneously in a noisy training room environment. Click here for a transcript of today’s news conference.