Traumatic brain injury Flashcards
(37 cards)
Define TBI
- results from an impact to the head, e.g. from a car accident or a fall
- results from an outside force and subsequent complications which can follow and further damage the brain - include a lack of oxygen, rising pressure, and swelling
What is the incidence of TBI
- estimated 69 million globally a year
- 1110 sheffield in one year
Who is most at risk for TBI?
- children (esp newborn - 4)
- young adults, esp 15-24
- adults 60+
- males in any age group
What are the main causes of TBI?
- road traffic collision
- falls
- assault
- GSW and blast injuries
Define closed head injury
- caused by a blow to the head with no penetration
Define open head injury
when a penetrating injury occurs
What is TBI severity determined by?
- length of time person experienced loss of consciousness (LOC)
- GCS score
- length of time in post traumatic amnesia
What is GCS?
a reliable, objective way to record conscious state of a person
What is PTA
- post traumatic amnesia
- a state where a person seems to be aware of the things around them but is confused/disoriented
Where does damage commonly occur in TBI?
- frontal lobe injury
- orbitofrontal and ventromedial prefrontal cortex
What is ‘frontal lobe syndrome’
- injury to frontal lobes can result in deficits in executive function, memory and attention – and cause impulsivity, reduced cognitive function, lack of insight
- link with personality disturbances
- damage to the orbitofrontal cortex during TBI is a major contributor to acquired social disinhibition
Define executive functions
- mediate and regulate other cognitive activities and behaviour in a purposeful and goal-directed fashion
- doing what must be done to solve a problem or achieve goals
- incorporates aspects of attention, memory, planning, reasoning, and problem solving to organise and regulate purposeful behaviour
- behavioural routines to accomplish intentions
- Maintaining and regulating goal-directed behaviour
- Monitoring and modifying behaviour in response to situational variables
What are some functional assessments for EF?
- multiple errands test (MET)
- behavioural assessment of dysexecutive syndrome (BADS)
- Functional Assessment of Verbal Reasoning and Executive Strategies (FAVRES)
- wisconsin card sorting task
- clinical obs
What is dysexecutive syndrome?
- impairment of cognitive processes and behaviours that enable a person to direct and control their behaviour in a purposeful and adequate way
How might dysexecutive syndrome present?
- impaired inhibition
- impaired ability to formulate goals
- impaired planning
- difficulty carrying out activities
- reduced ability to regulate performance
What processes are involved in memory?
- taking in info
- storing info adequately
- retreiving info when needed
What is anterograde amnesia?
difficulty laying down new info
What is retrograde amnesia?
loss of memory from before the injury
Describe the MT Wilga Ax
- get them to repeat sentences after you
- content units credited as well as vertabrim repitition
What are the different types of attention?
- selective
- divided
- sustained
- visual
- auditory
How might you assess attention in TBI?
- test of everyday attention (TEA)
- CLQT
- clinical obs
What are the challenges of insight deficits?
- distressing for survivors because they may struggle to understand why people are restricting them from doing certain things
- distressing for family because TBI may behave inappropriately without being aware that there is anything wrong with their action
How is fatigue related to TBI?
- most common reported effect
- intense and can have sig impact on QOL
How is reduced processing speed related to TBI?
- consistently documented after TBI
- sig related to measured of EF