TBI Flashcards
(42 cards)
Diffuse axonal injury
Extensive and widespread damage due to shearing forces (usually rotational) from rapid acceleration/deceleration
Contusion
Bruising on the brain resultant from a direct impact to the head
Hematomas: Epidural, subdural, and intracerebral
- Epidural: Blood between the dura and skull, resultant from skull fxs that cause a rapid increase in ICP
- Subdural: Bleeding between dural and subarachnoid, resultant from blunt trauma without fx
- Intracerebral: Frontal/temporal lobes
Normal ICP + increased ICP
- Normal: 0-10 mm HG
- Increased: >20 mm HG
Sxs of increased ICP
- HA
- Papilledema
- Vomiting
- Drowsiness
- Altered consciousness
CPP equation
CPP = MAP - ICP
Normal CPP + abnormal CPP
- Normal >70 mm HG
- Ischemic <4–50 mm HG
Glasgow Coma Scale
- Eye response (4)
- Verbal response (5)
- Motor response (6)
GCS Severity
Mild 13-15
Moderate 9-12
Severe 3-8
Coma
- Unarousable unconsciousness
- No periods of wakefulness or eye opening to stimulations
Vegetative state
- Lack of awareness but preserved capacity for arousal (spontaneous or stim-induced)
1. No evidence of awareness of self or environment
2. No evidence of purposeful or voluntary behavioral response to stim
3. No language
4. Bowel and bladder incontinence
5. Variable preservation of cranial nerve and spinal reflexes
6. Sufficient preservation of autonomic function
7. Intermittent wakefulness manifested by the presence of sleep wake cycles
Minimally conscious state
- Reproducible awareness of self or environment by one of the following:
1. Simple command following
2. Gestural or verbal yes/no responses
3. Intelligible verbalization
4. Purposeful behavior (movement or affective)
PTA Stages of Recovery
Mild 5-60 minutes Moderate 1-24 hours Severe 1-7 days Very Severe 1-4 weeks Extremely severe >4 weeks
I: No response
- Complete absence of observable behavior to stim
II: Generalized response
- Reaction to external stimuli in non-specific, inconsistent, and non-purposeful manner with stereotypical responses
III: Localized response
- Responds specifically and inconsistently with delays to stim
IV: Confused/gitated
- Alert and in heightened state of activity, restless, agitated
- Absent STM
- Lack of deficit awareness
V: Confused/inappropriate/non-agitated
- Alert and non-agitated
- Not oriented to person, place, or time
- Absence of goal-directed, problem solving, self-monitoring behavior
- Appropriate responses to simple commands with external cueing (inappropriate/non-purposeful without cueing)
VII: Automatic/appropriate
- Performs daily routine automamtically
- Carryover of new learning
- Initiates social interactions but judgement is impaired, overestimates abilities
VIII: Purposeful/appropriate (SBA)
- Consistently oriented to person, place, and time
- Aware of impairments but difficulty taking corrective action when completing tasks
- Difficulty with abstract reasoning, stress tolerance, and judgement
IX: Purposeful/appropriate (SBA on request)
- Independently shifts between tasks for 2 hours
- Requires some assist to adjust to life’s demands
- Emotional/behavioral issues possible
X: Purposeful/appropriate (Mod I)
- Goal-directed behavior, able to handle multiple tasks independently but may continue to have decreased attention and require increased time to complete tasks
Onset of spasticity
Occurs 3 days post-injury
Pharmacological Management: Baclonfen, Dizepam (Valium), Dantrolene, Botox
- Baclofen: GABA receptor agonist, orally or intrathecally
- Diazepam (Valium): Benzo, used to treat anxiety
- Dantrolene: Muscle relaxant
- Botox: Injected for localized effects lasting 3-4 months