4.0 - Neurosurgery DX Flashcards
choroid plexus produces __mL of CSF/day
500
principla motor tract of the SC
corticospinal tract
first to assess in neurological exam
mental status
most relevant measures when mental status is impaired
pupil reactivity
Eye movement
facial symmetry
gag
also known as flexor posturing
decorticate rigidity
presence of babinski reflex signifies?
upper motor neuron dse
demonstrate fractures, osteolytic or osteoblastic, or pneumocephaly
plain x ray
extremely useful dx tool in the setting of new focal neurologic deficit, decreased mental status, or trauma
non contrast CT
CT scan type that help show neoplastic or infectious process; for px who cannot undergo MRI d/t pacemakers or metal in orbits
contrast CT
fine slice CT scanning is only used when?
abnormality is seen in plain films
assess vascular lesions
thin slice axial contrast CT scan
limit of CT angiography
aneurysms
assessing soft tissues of the head and spine
MRI
MRI sequence that detect neoplastic and infectious processes
T1 sequence
MRI sequence that assess lesion associated edema of the brain and neural compression of the spin
t2 qequence
can detect ischemic stroke than CT
DWI (diffusion weighted imaging)
assess dural venous sinuses patency/thrombosis
MRI venograms
gold standard for evaluation of vascular pathology of brain and spine
TCBA (transarterial catheter based angiography)
emg/ncs typically performed when?
3-4weeks after injury
invasive monitoring bores a hole in what part of the skull
right frontal portion
ventriculostomy placed in which part of the ventricles?
frontal horn of the lateral ventricle
similar to ventriculostomy but fewer complications
intraparenchymal fiber optic pressure transduscer (bolt)
mortality benefit in traumatic brain injury patients
brain tissue oxygen sensors
