What is the King Devick KD test?

The King-Devick (K-D) Test is a quick, bedside assessment for concussion, measuring rapid number naming to evaluate eye movements (saccades), attention, and language, often used as a sideline screening tool in sports. Participants read single-digit numbers aloud from cards as fast as possible, and a slower score, or increased symptoms (headache, dizziness), compared to a pre-season baseline, suggests a potential brain injury.

What does the King-Devick test measure?

The King-Devick (K-D) test is based on measurement of the speed of rapid number naming (reading aloud single-digit numbers from 3 test cards), and captures impairment of eye movements, attention, language, and other correlates of suboptimal brain function.

What was the King-Devick test originally designed for?

The KD test was originally designed in the 1970s as a screening instrument to identify adolescents with learning disabilities and reading fluency concerns caused by changes in saccadic rhythm (ie, dyslexia).

What is the 2 minute concussion test?

A 2-minute concussion test, most commonly the King-Devick (K-D) Test, rapidly assesses brain function by having someone read single-digit numbers aloud from flashcards as quickly and accurately as possible, measuring eye movements, attention, and language processing; a significant increase in time (e.g., 3-5+ seconds) from a baseline suggests a concussion, making it a valuable sideline tool for coaches and parents, though it's best used alongside other evaluations for complete diagnosis.
 

What is the 20 20 20 rule for concussions?

The 20/20/20 rule for concussions is a strategy to reduce eye strain and visual fatigue during digital device use or reading: every 20 minutes, look at something 20 feet away for 20 seconds, helping with headaches, dizziness, and focus issues common after a concussion by giving your eyes and brain a short rest. It's a simple, helpful practice to manage symptoms, but it's part of a broader recovery plan that includes limiting screen time and getting professional guidance.
 

Sports Concussion Exam (6 of 9): King-Devick Test

What is the easy home concussion test?

One simple concussion assessment test is to shine a low-beam flashlight from the outer edge of each eye inward. Pupils should quickly get smaller (constrict) in response to the light. A slow pupil response to light may be a sign of brain injury (increased intracranial pressure or ICP).

What is the 3 concussion rule?

The "3 concussions rule" suggests retiring after three concussions, a concept from early guidelines, but modern experts say there's no universal number, emphasizing that severity, recovery time, and individual factors matter more; while studies link three or more to worse long-term brain function, many medical bodies advise against strict policies, fearing athletes will hide symptoms, and instead focus on individualized care after each concussion. 

When did the NFL start taking CTE seriously?

The NFL acknowledged a link between playing American football and being diagnosed with CTE in 2016, after denying such a link for over a decade and arguing that players' symptoms had other causes.

Is there a test to confirm concussion?

Neuropsychological Testing

Evidence of a concussion may not always be visible on MRI or CT scans, so a doctor may perform neuropsychological tests to determine if you are having difficulty with cognition and memory after a concussion. These tests may also detect any emotional changes.

What are the 4 P's of a concussion?

The "4 Ps of Concussion" are management strategies for daily life after a concussion: Prioritize important tasks, Plan activities to save energy, Pace yourself with rest breaks, and Position yourself in less distracting environments to reduce symptoms and manage recovery, helping you gradually return to school, work, or sports. 

What does the King Devick test measure Quizlet?

The test is an indicator of oculomotor visual performance for eye movements utilized during reading. King-Devick Test is based on the time to perform rapid number naming. It involves reading aloud a series of single digit numbers from left to right on three test cards.

What is the 4 hour rule for concussions?

4 HOURS. Carefully observe injured person for the first 4 hours after injury. After 4 hours, they may be allowed to sleep.

What is the gold standard test for concussion?

The SCAT5 is a standardized tool for evaluating for a suspected concussion and can be used on individuals aged 13 years and older. It supersedes the original SCAT (2005), the SCAT2 (2009), and the SCAT3 (2013). For children aged 12 and under, please use the Child SCAT5.

Is a CT scan or MRI better for a concussion?

✔ MRI scans provide better detail for soft tissue damage and are recommended for mild TBIs, concussions, and long-term brain injury assessment.

Why do they check your eyes for a concussion?

Around half of the brain circuits are related to eyesight, eye movements, and overall vision. For this reason, concussions often result in visual symptoms. Eye doctors can be useful in assessing a recent concussion. They can do so through fast automated naming tests and eye movement tests.

Who had the worst case of CTE ever?

What did Aaron Hernandez's brain scans reveal about his CTE? McKee, who studied Hernandez's brain, says she has examined over 700 cases of CTE and found that Hernandez's brain “was the worst CTE I have seen in a person who died at that age (27).”

Are there any 400 pound NFL players?

Yes, there are players in the NFL who weigh over 400 pounds, with Tampa Bay Buccaneers rookie Desmond Watson being a prominent recent example, listed at 464 pounds; while not common, several massive defensive tackles and offensive linemen have played in the league at or near that weight, making it a rare but existing phenomenon.
 

Why don't NFL players wear arm pads anymore?

The answer is clear – it's all about performance! 🚀✨ As NFL veterans can attest, every pound and split second count in the game. In the past, oversized pads may have appeared impressive, but they actually hindered players. They slowed them down, drained vital energy, and diminished precision on the field.

Is 7 concussions bad?

Yes, multiple concussions can cause depression, anger, memory loss, and other symptoms that make you feel unlike yourself. Brain damage from a concussion can cause lasting emotional symptoms that do not resolve without treatment. Or, they may make existing struggles worse.

What is a stage 4 concussion?

Grade 4 concussions are more extreme and happen when a loss of consciousness lasts longer than one minute. These concussions can be symptomatic of a deeper internal injury, such as edema or a hematoma. After a Grade 4 concussion, you may have mood swings and become very irritable.

How many concussions can you get before you get CTE?

There is no strong evidence that shows that getting one or more concussions (or other mild traumatic brain injuries) or occasional hits to the head leads to CTE.

What is the finger test for concussion?

While following their finger with their eyes, ask the patient to slowly move their finger to the right and left and then trace an “H” allowing the examiner to evaluate the six cardinal positions of gaze. Ask the patient if they experience any diplopia during gaze in any direction.

What are the four R's for concussion?

The 4 R's. Recognise, Remove, Recover, Return - these are the four crucial steps in managing concussion in rugby. Whether you're a player, coach, or official, understanding and following the 4 R's is essential for protecting brain health and ensuring a safe return to the game.

What is the pen light test for concussion?

If using a near target, instruct the patient: “Hold the target about 4 inches from your face.” Then, add, “Keep looking ahead at the target while I shine the light back and forth into each eye.” Illuminate the penlight into 1 eye and hold for 3 seconds, then swing to the other eye. Repeat this 2-3 times for each eye.