What is the primary goal of treating TBI? How is this done? - ANS-preventing secondary
brain injury. This is done by maintaining blood pressure and
... [Show More] providing adequate
profusion.
After managing ABCDEs of TBI what MUST be identified if present? How is this done? -
ANS-mass lesion that requires surgical evacuation is critical! this is done with CT.
NOTE: obtaining a CT should not delay patient transfer to trauma center.
Which brain lobes do the following hold:
1. anterior fossa:
2. middle fossa:
3. posterior fossa: - ANS-1. anterior fossa: frontal lobes
2. middle fossa: temporal lobes
3. posterior fossa: lower brainstem and cerebellum
What are the 3 layers of the meninges? - ANS-dura mater, arachnoid mater, pia mater
What does the dura mater adhere firmly to? - ANS-the skull. it is tough and fibrous
What layer of the meninges splits into two leaves as specific sites to enclose large
venous sinuses? What do these sinuses do? - ANS-dura mater.
these sinuses provide major venous drainage from the brain.
What is the midline sinus of of the brain that splits into two sinuses: bilateral transverse
and sigmoid sinus? What side are these bigger on? - ANS-The main sinus enclosed by
the dura major is the midline superior sagital sinus. This splits into the sigmoid and
bilateral transverse sinuses which are larger on the right side.
What are the arteries that lie between the skull and the dura mater (epidural space)? -
ANS-meningeal arteries.
What is the most commonly injured meningeal artery and where is it located? - ANSmiddle meningeal artery.
Located over the temporal fossa
T/F: the arachnoid mater is fused to the dura mater? - ANS-FALSE: not attached. This
produces a potential space for a subdural hematoma
In a subdural hematoma, what is the cause? - ANS-injury to bridging veins that extend
from brain surface to the sinuses within the dura.
_______ fills the space between the arachnoid and pia mater? - ANS-CSF. this
cushions the brain and spinal cord. [Show Less]