affects almost 4 million individuals annually. There are many sideline
screening tools available to assist in the detection of sports-related concussion
. The King-Devick (K-D) test in association with Mayo Clinic utilizes rapid number naming to test saccadic eye movements in order to screen for concussion
. An ideal screening tool for concussion
would correctly identify all athletes with active concussion
. The accuracy of K-D testing compared with other sideline
screening tools is undetermined.
To critically assess current evidence regarding the utility of K-D testing as a sideline
screening tool for acute concussion
and compare K-D testing to other sideline concussion
The objective was addressed through the development of a critically appraised topic
that included a clinical scenario, structured question, literature search strategy, critical appraisal, assessment of results, evidence summary, commentary, and bottom-line conclusions. Participants included consultant and resident neurologists, a medical librarian, clinical epidemiologists, and content experts in the field of concussion
neurology and neuro-ophthalmology.
A recent meta-analysis was selected for critical appraisal. Cohorts analyzing athletes with sports-related concussion
were selected, and utilized K-D testing as the main baseline and sideline
assessment of concussion
. K-D testing was found to have a high sensitivity and specificity for detecting concussion
when there was worsening from baseline.
K-D testing has high sensitivity and specificity for detecting sideline concussion
. Compared with other sideline
screening tools that do not include vision testing, it has greater accuracy. Screening for concussion
is optimized when multiple testing modalities are used in conjunction.