neurological system Flashcards
functions of cerebellum
voluntary movement and balance
how to test voluntary movement
touch finger to nose
how to test balance
can walk straight
PERRLA
equal, round, reactive to light, and accommodates
accomodation
accommodates to close and far objects
normal size for pupils
3-5 mm
s/s of basilar skull fracture (BSF)
Battle’s sign: bruise behind ear, periorbital hematoma/raccoon eyes, CSF leakage from nose or ear
nursing priority for BSF
monitor neuro, immobilize C spine
decorticate
problems with cortex
decerebrate
problems in brainstem
tonic clonic seizures
tonic: loss of conscious
clonic: jerking of arms and legs only
absence seizures
freezing of body
myoclonic seizures
whole body jerking
atonic seizures
pt collapses
status epilepticus
repeat seizures, not conscious
epilepsy
chronic seizures
nursing for seizures
position pt on side to maintain airway, loosen clothing, O2, time + record time and duration of seizure, never stop antiseizure meds, suction after seizure
Cushing’s triad
sign of increased ICP
high BP, high HR, high pulse pressure
nursing for increased ICP
elevate HOB to 30 degrees for good cerebral perfusion, stool softeners to prevent straining, no stress, ensure warm as cold temps increase ICP,
CSF assessment
normal: colourless, nothing in it (e.g. WBC), normal pressure of 60-150,, normal volume (125-150)
ischemic stroke
block in blood flow
s/s of ischemic stroke
hypertension
nursing for ischemic stroke
give TPA 3-4 hours from onset of s/s
when is TPA contraindicated
thrombocytopenia/low levels of platelets, trauma to head, surgery
hemorrhagic stroke
bleed in brain that can cause seizure
nursing for hemorrhagic stroke
NPO, neuro assessment, stool softeners, elevate HOB to 30 degrees for good cerebral perfusion, no anticoagulants