Week 5 - Altered LOC & Multisystem Flashcards
what is the most common type of stroke?
ischemic
what is the most common type of stroke?
ischemic
what are 3 compartments that impact ICP?
- brain
- blood
- CSF
if ICP is increased how can it affect the brain/ what can it cause?
- meningitis
- tumor
- inflammation
- trauma
- glioma
- surgery
- abcess
- TBI
- encephalitis
if ICP is increased how can it affect the CSF/ what can it cause?
- meningitis
- infection
- hydrocephalus
- choroid plexus tumor
what does meningitis affect?
proper drainage
describe a choroid plexus tumor
tumor in ventricles of brain that affect CSF
if ICP is increased how can it affect the blood/ what can it cause?
- hemorrhagic stroke
- increased CO2
- HTN
- aneurysm
describe a hemorrhagic stroke
- weakened/ diseased blood vessels rupture
- blood leaks into brain tissue
describe an ischemic stroke
- blood clots stop flow of blood to an area of the brain
what are indications of a head wound?
- scalp wound
- fracture
- swelling
- bruising
- loss of consciousness
- nasal discharge
- stiff neck
explain the process of ICP
- SNS activation do to decreased perfusion
- brain stem pressure
- baroreceptors activated
- PNS activation
- death
what does CPP stand for?
cerebral perfusion pressure
explain cerebral perfusion pressure (CPP)
- cerebral blood flow decreases
- leads to cerebral ischemia
- pressure then put on vasculature
- once pressure stronger than MAP artery compressed
what are early warning signs of ICP?
- papilledema
- headache
- N/V
- blurred vision
- restlessness
- irritability
- confusion
what is papilledema?
swelling of both optic discs in eyes
how do you assess for papilledema?
- MRI
- CT
if someone has ICP what can make their headaches worse?
- cough
- sneezing
- exertion
what are late signs of increased ICP?
- pupil dilation
- hemiplegia
- impaired oculophalic movements
- increased motor tone
- flexion or extension to pain
- reps containing sighs, deep yawns or pauses
- Cushing’s triad
- decreased GCS
what is the Cushing’s triad reflex?
nervous system response
once ICP is increased what are the different stages of Cushing’s triad ?
stage 1
- SNS
- HTN (widening pulse pressure)
- tachycardia
stage 2
- PNS (due to HTN)
- bradycardia
Stage 3
- HTN and increased ICP makes pressure on ponds and irregular resps
describe a 6th cranial nerve palsy
- hearing loss
- facial weakness
- decreased facial sensation
- droopy eyelid
- fever
- headache
- N/V
what are some signs and symptoms of a sub arrachnoid hemorrhage (SAH)?
- worst headache EVER
- N/V
- change in LOC
- nuchal rigidity
- photophobia
what is nuchal rigidity?
stiff neck
what causes a sub arrachnoid hemorrhage (SAH)?
- aneurysm
- trauma
- bleeding disorder
- medications
- arteriovenous malformations (avm)
A TBI is more severe if LOC is lost for what?
more than 30 minutes
what are different types of TBI’s?
- concussion
- subarachnoid hemorrhage
- subdural hematoma
- epidural hematoma
what type of TBI can impair consciousness?
epidural hematoma
what do you use to identify and assess changes in LOC?
- AEIOUTIPS
- head CT
- lumbar puncture
what does AEIOUTIPS stand for?
A
- alcohol
- acidosis
E
- epilepsy
- electrolyte
- endocrine (high or low blood sugar)
I
- infection
- insulin
O
- overdose
- oxygen decrease
U
- uremia
- urosepsis
- under dose
T
- trauma
- tumor
- temperature
- toxins
- timing
I
- infection
- ICP
P
- poison
- psych
S
- stroke
- seizure
- sepsis
- shock
- syncope
how do you identify and assess for changes in LOC?
- GCS
- neuro vitals
- CAM PRISME
- VS
- NIHSS
- SST
- TORBSST
what does NIHSS assess?
- if pt if getting worse or better
- stroke scale
what is on the NIHSS?
- LOC
- gaze
- visual facial palsy
- motor arm
- motor leg
- limb ataxia
- sensation
- language
- dysarthria
- extinction/ inattention
when do you use SST?
- stroke
- tumor
- cancer
- ALS
- parkinsons
- dementia
- delirium
- critical illness
- GERD
- MS
- intubation
- SLE
- TBI
in regards to recreational substances, what will a patient’s pupils look like if they are using opioids?
pinpoint
in regards to recreational substances, what will a patient’s pupils look like if they are using cocaine, MDMA?
dilated
What is assessed in a GSC? what do we want pt to score?
- eyes opening response
- verbal response
- motor response
want pt to score high, if low means altered LOC
what’s included in a focused neuro assessment?
- how are they presenting
- mobility
- concentration
- speech
- swallow
- eye contact/ movement
- decision-making
- impulsiveness
- VS
what do you to diagnose a change in LOC?
- head CT
- MRI
- lumbar puncutre
- X-ray
- EEG
- labs
what specific labs are you looking at when diagnosing a change in LOC?
- ECG
- INR
- CBC
what are you trying to asses for with a lumbar puncture for a change in LOC?
- meningitis
- cancers
- bleeding
- GBS
- MS
what complications can result from a head injury?
- re-bleed
- neuro deficits
- seizure
- epidural tear
- CSF leak
- post confusion syndrome
- acute intracranial hypertension (AIH)
- autonomic dysreflexia
- neurogenic shock
- death
describe post concussion syndrome
- > 90 days or lasts longer than expected
what are the signs and symptoms of post concussion syndrome?
- headaches
- dizziness
- fatigue
- irritability
- anxiety
- trouble falling asleep or sleeping to much
- loss of concentration/ memory
- ringing in ears
- blurry vision
- noise/ light sensitivity
what is autonomic dysreflexia?
- injury T6or above
- SNS response to noxious stimuli
- bladder
- bowel
- break down of skin
what do you need to monitor for a pt with altered level of consciousness ?
- external ventricular drain
- lumbar drain
- urinary output
- cranial nerves
- vitals
- MSKL system
- bladder
- bowels
If someone has a drain in their brain what are they at risk of?
high risk of infection
What do we want someones ICP to be? when is it abnormal? When is it concerning?
normal < 15mmHg
abnormal 15-20mmHg
concerning >20 mmHg
when monitoring a pt with a stroke what we want their systolic BP to be? why?
< 160 or risk for re-bleed
what are some nursing interventions and precautions we should take for clients with a changed level of consciousness?
- decrease stimuli
- educate family and pt
- HOB 30-45 degrees
- safe mobility
- stool softeners
- antiemetics
- hyperventilating
- align head and neck
- no flexion, blowing nose, sneezing, coughing
- fluid interventions
what are some treatments patients with a change in LOC could have?
- lumbar puncture
- tPA
- EVT
- coiling
- clipping
- craniotomy
- burr holes
what does EVT stand for? what does it treat? When is it done? What does it put the pt at risk for?
- endovascular treatment
- thrombectomy
- normally within 6 hours
- puts pt at risk for intraccerebral bleed
describe coiling, what is the purpose of it?
- prevents clots from forming
- prevents entry of blood into weak space
- done through artery
describe clipping, how is it done?
- clip off broken area
- via craniotomy
what are some treatments to avoid for elevated ICP?
- lumbar puncture
- HYPOtonic solution
why do you not want to do a lumber puncture to treat ICP?
- possible risk of herniation if CSF pressure drops to low
- mass effect caused by mass or hemorrhage
what medications can be used to treat Changes in LOC?
- osmotics
- diazepam
- dilantin
- lorazepam
- acetazolamide
- hydralazine
- labetalol
- desopressin
- dexamethasone
- phenobarbital
- antihypertensives
- antiplatelets/ anticoagulants
- lipid lowering agents
- antiarrhythmics
- anti-anxiety
in regards to medications that can be used to treat changes in LOC what do osmotics do?
- lower ICP
what are examples of osmotic medications that are used to treat changes in LOC?
- mannitol
- 3% hypertonic solution
what does mannitol do when given to a pt with a change in LOC? How is it given? when does it start to work?
- decrease ICP
- only given IV
- works within 30-60 minutes