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PT 623 TBI Exam Questions And Correct Answers
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PT 623 TBI Exam Questions And Correct Answerswhat are the stats on TBI - ANSWER -1.5 to 2 mill incur a TBI each yr -> 50000 die
-80-90000 develop intellectual, behavioral, physical disabilities
-50,000 children sustain bike related TBIs
-blast injuries from war is a rising cause
who gets TBIs - ANSWER Men>Women
15-24 y/o
Risk Takers
what is the most common overall cause of TBI - ANSWER falls (28%)
-MVA 20%
-Assaults 11%
-Sports/recreation 19%
what percent of infant TBIs are due to abuse - ANSWER 64%
when does damage occur and how does it occur with TBI - ANSWER occur at the
moment of impact
-acc/deceleration forces
-rotational forces
-penetrating forces
what are two types of brain injuries from trauma - ANSWER -open brain injuries
-closed brain injuries
,what occurs due to open brain injury - ANSWER -caused by penetrating objects
-exposure of brain tissue
-damage is localized to site of wound
what occurs due to closed brain injury - ANSWER -MORE COMMON
-caused by MVA/fall
-skull may or may not fx
-brain bounces against the skull
-damage is more widespread
what are non-traumatic causes of TBI - ANSWER -anoxia
-hypoxia
what is anoxia - ANSWER absence of oxygen
-drowning or cardiac arrest
what is hypoxia - ANSWER deficiency in the amount of oxygen supply
where does anoxia/hypoxia cause damage - ANSWER at the cellular level
-may impact entire brain
what are common causes of non-traumatic TBI - ANSWER -near drowning
-MI
-toxic exposures
-tumors/masses
-infections
, -vascular disruption/blood loss
what is ABI - ANSWER Acquired Brain Injury
-describes BOTH traumatic and non-traumatic causes
what are two types of injury from primary damage - ANSWER focal and diffuse
where does focal damage occur - ANSWER -area of contact between skull and brain or
projectile
-often coup/contrecoup injuries
what is coup - ANSWER area that is struck at impact
what is contrecoup - ANSWER On the opposite side of the coup injury
-from the bounce
what is the result of focal damage - ANSWER -contusion
-laceration (tearing)
-hematomas (bleeding in dural spaces or parenchyma)
what is diffuse axonal injury - ANSWER -widespread shearing and retraction of damaged
axons is seen
-one of MOST COMMON types of head injury
-tearing of axons from acceleration, deceleration, & rotational forces
what may result from DAI - ANSWER coma
-correlates with decreased clinical recovery
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