Neuro Flashcards
Drugs, drops, and damages to the pons cause what?
Pinpoint pupils
Fear, seizures, cocaine, crack, and phencyclidine can cause what?
Dilated pupils
bruising over the mastoid areas suggestive of a basilar skull fracture
Battle Sign
Periorbital edema and bruising suggestive of a frontobasilar fracture
Racoon eye
Drainage of CSF from the nose suggests fracture of the cribriform plate with herniation fragments of the dura and arachnoid through the fracture
Rhinorrhea
Drainage of CSF from the ear is usually associated with a fracture of the petrous portion of the temporal bone
CSF otorrhea
Includes nuchal rigidity (pain and resistance of the neck flexion), fever, headache, and photophobia are signs of
Meningeal irritation
Decreased LOC, Restlessness, confusion, combativeness are S/s
early signs of increased ICP
Changes in VS in increased ICP is considered what?
Late sign
Vitals
late sign of increased icp
bradycardia
wide pulse pressure
changes in respiratory patters (Cheyne-stokes)
Cushing triad
Benzos are usually avoided in patients with ICP unless needed for what?
Seizures
why is analgesics and sedative intervention used during increased ICP
It reduced O2 needs, agitation, pain, and or discomfort that can lead to an increase in ICP
Most common anesthetics used during increased ICP
Propfol
Why are NBA paralytics used
to decreased CO2 and O2 needs, its usually a last resort
Used for htn in those with increased ICP
Nicardipine
With brain bleeds you want to avoid a map of
greater than 110
first line with neurp patients to decrease systemic bp
Ace and beta
Avoided during IICP due to cerebral edema
Calcium channel blockers
nursing managements for IICP
BP management, A line, Seizure precaution, low stimulation,
removing portion of the skull to allow for more room to swell after swelling improves, it is replaced
decompressive craniotomy
Managements of brain tumors include
corticosteroids, h2 receptor blockers, seizure medications, surgical managements, radiation therapy, chemotherapy.
management of aneurysm includes
clipping, wrapping, coiling, and pipelin
Manangment of brain tumors should take place within
24-48hrs
a tubing of nickel-cobalt chromium
pipeline
Treatment of vasospasms
triple H therapy, Nimodipine, balloon angio, intra-arterial vasodilator
late signs of IICP
cushings
abnormal posturing
VFIB
dolls eyes
what happens if CPP is greater than 100
It indicates hyperperfusion and IICP
what does less than 60 CPP mean
decreased blood supply and hypoxia
what does it mean if MAP=ICP
indicates no cerebral BF
what CPP level is maintained for critically ill patients
70
normal ICP
0-15
to maintain functional autoregulation what needs to be present
Normal PaCo2, Cpp >60 and MAP <160
fluid filled catheter inserted into the lateral ventricles via a burr hole. Allows CSF drainage and bedside monitoring
Vebtriculostomy
hollow, threaded screw is placed in the subarachnoid space. Connected by fluid-filled tubing to a transducer level with lateral ventricles.
subarachnoid screw
fiber-optic sensor inserted into the epidural space. Measures the changes in light reflected from a pressure-sensitive diaphragm in the catheter tip. Noninvasive and measures ICP.
Epidural or subdural sensor
Hypercapnua causes what?
Vasodilation
why is hyperventilation a tempory treatment for IICP
is causes a decrease in Co2 and vasoconstriction
what is contraindiciated in a patient with a TBI for the first 24hrs
Hyperventilation
ischemic stokes can be reversed with fibrinolytic therapy using what?
tPA
Can you use the same IV for other medications that was used for tPA?
No.
clinicals manifestations of stoke
weakness, numbness, visual changes, dysarthria, dysphagia, aphasia
Mycotic aneurysm is caused by what?
Infections
what is triple H therapy?
treat hypertension, hemodilution and hypervolemia that is causing Vasospasms
medications used to treat vasospasms
dopamin and levophed
a tangle of vessels, usually congenital and may enlarge with age
AVM
managements of ischemic stroke
tPa within 3-4 hrs of symptoms iv
interventional therapy to remove clots within 8 hrs
anticoagulation therapy
BP control
management of hemorrhagic stroke
treat underlining condition such a hypertension, AVM,
diagnose with CT
ensure what medication is available if the patient starts to have bleeding issues during code stroke
aminocaproic acid
Central technique of stimulation
Trapeziues pinch, sternal rub
arms are in full flexion on chest
decorticate
arms are stiffly extended, extension of legs -Hands are C
decerebrate
which pupil sign goes with brain stem injury
Dolls eyes
Signs of IICP and meningeal irritation
nucha rigidity, kernigs sign, fever, headache, and photophobia
Osmotic diuretic used to treat cerebral hypertension
Mannitol 0.25-2gm/ kg IV
Filter needle
target osmolality 320
How should you suction a patient and for how long
Limit passes 1-2 no more than 5-10 seconds.
Hypertonic NS 3% is an intervention for what?
Treat IICP.
positoning for a patient with iicp
HOB raised, head facing straight, neck neutral.
Accelerations injuries (head on collision) is what type of SCI
Hyperflexion
backward snap of spine by rear end collision, downward fall onto chin is what?
Hyperextension
caused by landing on feet from a height
axal loading/ compression
trauma of C4 and above the patient is at risk for what?
Impaired ventalation
priority intervention for SCI
Cervical spine stabilization
with SCI, you should always assesse for what
tracheal deviation
occurs with sci above T6 leading to vasoconstriction reflex
Autonomic dysreflexia
managements of autonomic dysreflexia
1- sit upright to decrease BP, administer nitrates and hydralazine
occures immediately or within hours of sci
spinal shock
flaccid paralysis, loss of reflexes below level of injury and paralytic ileus is s/s of
spinal shock
Can occur within 24 hrs of a SCI
Hypotension, bradycardia, dependent edema, abrupt fever
Tx with vasopressors, atropine, and IVF
neurogenic shock
you provide traction; immobilize spinal column
halo fixation
three cardinal findings of brain death
coma or unresponsiveness, absence of brainstem reflexes, apnea
test for brain death
motor testing
pupillary repsponse
oculocephalic refelx (dolls eys)
explain normal, abnormal and absent findings with a caloric water test
normal-eyes move
abnormal- eyes do not move
absent- eyes stay neutral
near temporal bone is associated with the epidural bleed/hematoma
Linear skull fracture
can be because they extend to brain matter at times. often results in a communication between the external and interbal environment (Risk for infection) but can allow movement of swelling with the brain
depressive
around the anterior, middle or posterior fossa
basilar
between the skill and dura, near the middle meneigeal artery.
Epidural hematoma
in the arachnoid matter,
subdural hematoma
aneurysms and avams are usually the cause. They can have surgery to stop the bleeding or balloon angioplasty.
subarachnoid hematoma
covers the actual brain. When people bleed here it is true intracranial bleeding.
pia matter
you should give patients with a brain bleed other things to treat fever besides what and why?
tylenol becuase it does not work with neurogenic fevers
management for intracranial bleeds
euvolemic protocol, monitor ecg changes, seizure precatuions, neuro assessment.
GSC score of 13-15 , lOC, amnesia for 5-60 seconds, no abnormal ct
mild head injury
gsc 9-12, LOC amnesia up to 24hrs.
moderate
gsc score 3-6 LOC. long term amnesia, cerebral contusuion, lascerations or hematoma
severe
therapeutic hypothermia can help what
ICP
seizures and fever are considered what
hyper metabolic situations
another way to treat ICP bu placement of this drain
EVD