Week 3- Concussion Flashcards
PART 1: INTRO AND COGNITIVE/FATIGUE SUBTYPE
PART 1: INTRO AND COGNITIVE/FATIGUE SUBTYPE
Is a Concussion a brain injury?
YES, shearing of axons inside brain.
- What are the 3 levels of TBI?
- What category does a concussion fall under?
- Mild, Moderate, Severe
- Mild
Concussion Pathophysiology:
- Concussion is a _________ brain injury.
- Will we see anything on a head scan after a concussion? Why?
- Disruption of cell membranes and axonal stretching leads to flux of ions through previously regulated channels → _________ effects on postsynaptic neurons. This then leads to widespread release of ____________, which causes even further ionic flux.
- Na/K ATP-dependent pump increases membrane pumping to reestablish balance. This depletes ________ stores.
-____ energy demand + ____ blood supply → Metabolic crisis
- Metabolic
- No, because they are not structural changes, but rather metabolic.
- depressive, neurotransmitters
- energy stores
-**increased energy demand + decreased blood supply = metabolic crisis
How do we classify concussions?
-Based off of their primary S/Sx.
What are the 6 subtypes of concussion?
- Cognitive/Fatigue
- Ocular/Visual
- Vestibular
- Anxiety/Mood
- Cervical
- Post-Traumatic Migraine
What subtype of concussion is most often seen EARLY ON following concussion?
-Cognitive/Fatigue
What are the symptoms of Cognitive/Fatigue subtype?
- Fatigue
- HA with cognitive and physical activity
- “End of Day” symptoms
- Often see sleep disturbances
Cognitive/Fatigue Exam:
- Is their vestibular/ocular screening normal?
- Neurocognitive test results are mild but _______/_________, deficits across all composites.
- Deficits with ______, ______ intact.
- Yes
- global/widespread
- retrieval, encoding
What are some helpful questions to see if it is consistent with cognitive/fatigue concussion?
- Do you have a generalized HA that gets worse as the day progresses?
- Do you feel more fatigued than normal at the end of the day?
- Do you feel more distractable?
Cognitive/Fatigue Treatment:
- These patients are the ______ likely to need PT.
- Incorporation of physical/cognitive _______ throughout the day (NOT _____!)
- If persistent, what pharmacological agents are available?
- _______ therapy (if symptoms linger more than a few months)
- Monitored, structured exercise progression.
- least
- breaks (NOT naps!)
- neurostimulants (amantadine, methylphenidate), sleep aide
- Cognitive therapy
Why do we not take naps?
-To not cause sleep disturbances and help keep sleep schedule.
PART 2: OCULAR/VISUAL SUBTYPE
PART 2: OCULAR/VISUAL SUBTYPE
What are the risk factors for Ocular/Visual subtype concussion?
-Family/personal history of ocular dysfunction
Ocular/Visual Symptoms:
- ______ HA driven by visual work.
- Difficulties with visually-based classes, assignments, or activities.
- _______ behind eyes.
- Visual “_____” issues.
- ______/_______ vision
- Frontal HA
- pressure
- “focus”
- blurry/double
How can we distinguish the difference between ocular/visual and cognitive/fatigue HA?
-Ocular/visual tends to be located more near the eyes while cognitive/fatigue is more general HA.
Ocular/Visual Exam:
- Visual/Oculomotor Exam
- ________, _______
- ________ difficulties (insufficiency, spasm/excess)
- __________ insufficiency
- _________ visual deficits
- __________ (tropias, phorias)
- Neurocognitive Test Results
- Deficits in ________ time.
- Deficits with _______ memory. (________ rather than _______)
- smooth pursuit, saccades
- convergence difficulties
- accommodative insufficiencies
- binocular visual deficits
- strabismus
- reaction time
- visual memory (encoding rather than retrieval)
_________ is the most frequent exam finding with ocular/visual subtype.
-Convergence
- What is not frequently associated with ocular/vision subtype?
- If this symptom is one of the main complaints, then our focus switches to which subtype?
- Photosensitivity
- Migraine
- What is strabismus?
- What are the 2 primary types of ocular deviation?
- Misalignment of the eyes/dysconjugate gaze at rest.
- Tropia and Phoria
- What is tropia?
- Exo = ________, Eso = ________
- Hyper = ________, Hypo = ________
- Tropia = over deviation of the eye
- Exo = outward (laterally), Eso = inward (medially)
- Hyper = upward, Hypo = downward
What is phoria?
-Phoria = ocular deviation occurs when dissociation occurs.
______ tend to be present all the time while _______ show up when the eyes get more tired.
-tropia, phoria
Ocular Misalignment If Severe:
- _______
- _____ tilt
- Noticeable ________
Ocular Misalignment If Subtle:
- Difficulty maintaining _____
- Cosmetically _______
- Ocular _______
- ________
- Mental dullness
- Diplopia
- Head tilt
- Noticeable eye turn
- Difficulty maintaining focus
- Cosmetically normal
- Ocular soreness
- HA
Vergence Dysfunction Symptoms:
- ________: Ability of eyes to turn inward to focus on a near target
- ________: Ability of eyes to move outwards to focus on a further target
- Which one do we see more often?
- Convergence
- Divergence
- Convergence
What are the main complaints of with vergence dysfunction?
-Gaze instability and/or double vision
What are the general symptoms of vergence dysfunction? (5)
- Asthenopia (eye fatigue) when reading
- Frontal headaches
- Intermittent/Constant double vision
- Squints/closes one eye
- Letters appear to float/move on the page
What are (3) common vergence problems?
- Convergence Insufficiency
- Convergence Excess
- Convergence Spasm
Accommodative Dysfunction:
- What is accommodation?
- Reduction in ability to focus at _____.
- Accommodative ______. (overfocusing at near)
- Struggle to coordinate accommodation and vergence, leading to difficulty in _____________.
- COMPUTERS, PHONES, NEAR WORK
- The adjustment of the optics of theeyeto keep an object in focus on the retina as its distance from theeyevaries.
- near
- spasm
- spatial awareness
What does treatment of Ocular/Visual Subtype look like? (2)
- Ocular Motor Training
- Physical Exertion