Neurological Dysfunction Flashcards
What family Hx do you need to know about during a neuro assessment?
Intellectual & Developmental Disabilities
Deaf/blind
Epilepsy
Stroke
What HEALTH Hx do you need to know about during a neuro assessment?
Injury with loss of consciousness
Febrile illness
Encounter with animal/insect - RABIES/WEST NILE
Ingestion of neurotoxic substance - FUEL/ANTIFREEZE
Past illness (recent – Meningitis or Green)
What are the neuro assessment PHYSICAL EXAM findings?
Size/shape of head – esp. infants
LOC Awake & alert/drowsy or lethargic
Activity – spontaneous or pain stimuli
Tone – tense, flaccid
Symmetry - equal
Facial features - Syndromes
High-pitched cry esp. in infants
Respiratory pattern – apnea, hyper vent
Muscular activity/coordination - ticks/twitch
Reflexes/strength
What neuro-assessment characteristic is the earliest sign of improvement or deterioration?
Level of Consciousness
- fully, lethargic, coma
The Glasgow Coma Scale is used to assess
- LOC
- impairments in infants to very young (<2 y/o) can be problematic
What is the standard system of evaluating and assessing LOC?
Glasgow Coma Scale
A Glasgow Coma scale in pediatrics is used for ages
< 2 y/o
During a Glasgow coma scale in pediatrics, what is a helpful strategy to fully evaluate the child
family member interactions with the child
What are the 3 parts of assessments for the Glasgow Coma scale?
eye-opening
verbal response
motor response - Best
What is the score range on a Galsgow Scale from lowest to highest?
3-15
- lowest = deep coma/death
- highest = awake and aware
What Glasgow score is generally accepted as coma?
less than or equal to 8
What Glasgow score does the patient need to be intubated?
less than 8; intubate
Glasgow scores for eye-opening responses (all ages)
4-spontaneous
3-to speech
2-to pain/pressure
1-none
Glasgow’s scores for verbal responses
>2 y/o
5: oriented
4: confused
3: inappropriate words
2: incomprehensible/sounds
1: no response
T: Endotracheal tube or Trach
Glasgow’s scores for verbal responses
<2 y/o
5: coos, babbles, smiles
4: irritable cry, consolable
3: inappropriate crying/screaming
2: moans/grunts
1:none
Glasgow’s scores for motor responses
< 2 y/o
6: spontaneous/purposeful
5: withdraws to touch
4: withdraws to pain
3: flexion abnormal
2: extension abnormal
1: none
Glasgow’s scores for motor responses
> 2 y/o
6: obeys commands
5: localizes pain
4: flexion withdrawal
3: flexion abnormal
2: extension abnormal
1: none
Neuro Assessment of Pupils uses what to measure them
Pupillometer (1-8mm)
What are the different reactions in a pupil assessment?
Brisk
Sluggish
No reaction
Eyes closed by swelling
Pinpoint, Dilated/fixed, Unequal
If the pupils are fixed or dilated for more than 5 minutes, what does this mean?
brain stem damage
Atropine
eye dilated
Pinpoint pupils reasons
medications
barbiturate poisoning
What is considered a neurologic emergency regarding pupils?
sudden appearance of a fixed/dilated pupil
When a child has a sudden appearance of dilated pupils, the nurse’s priority action is?
remain with the child
With atropine pupils, the child is at high risk for
respiratory arrest
Decorticate (flexion) position means what neurological problem?
dysfunction of the cerebral cortex/above brainstem
The decorticate (flexion) position looks like
flexion of the elbows onto the chest with adduction of the arms
extension of the legs
feet together
Decerebrate (extension) position means what neurological problem?
dysfunction at the midbrain/brainstem
The Decerebrate (extension) position looks like
Extremities rotate abduction of the arms and legs with inversion of the feet
Hands out and back
Will you see posturing if they are not stimulated?
no
How would you document posturing?
describe the appearance do not label it
Herniating
Posturing only on one side
Total Cranium vol for Intracranial Pressure percentages
Brain = 80%
CSF = 10%
Blood = 10%
If there is a chnage in 1 area of ICP, then the others will
compensate
- maintain constant vol and pressure
In cerebral swelling, what happens to the ICP?
absorb more CSF causing a low blood flow
Bulging fontanels if open means
more compensation
Increased ICP early S/S onset
subtle when more noticeable when pressure increases
What are the early s/s of increased ICP? SATA.
HA
Vomiting
Fatigue
Irritability
Dizziness
Personality changes
HA
Vomiting
Fatigue
Irritability
Personality changes
Increased ICP S/S in Infants
tense, bulging fontanels
separate cranial sutures
irritable/restless
drowsy
Increased sleep (no eating)
High-pitched cry
Increased head circumference
- distended scalp veins
Setting Sun Sign
What is the Setting Sun Sign?
eyes rotating downward with the white above the eyes exposed
What are some s/s of increased ICP in a 1-month-old infant? SATA.
Bulging fontanels with separate sutures
Seizures
Sleeping and not waking up to eat
Diplopia
Decreased head circumference
Setting Sun Syndrome
Bulging fontanels with separate sutures
Sleeping and not waking up to eat
Rationale: Seizures and Diplopia is seen in toddlers; not infants. They would have Increased FOC- head circumference and Setting Sun “Sign”; setting sun syndrome is in elderly patients becoming hyperactive at night.
Children s/s of increased ICP
HA (coughing, bending, sitting up)
Nausea
Forceful vomiting
Diplopia, blurred vision
Seizures
Indifference, drowsiness
Increased sleeping
Not following simple commands
Lethargy
What is the difference between infant and children s/s of increased ICP?
infants have more objective s/s
children are subjective s/s
What are late s/s of Increased ICP in infants and children?
Bradycardia
decreased motor response to a command
decreased sensory to painful stimuli
sluggish/fixed/dilated pupils
flexion/extension posturing
altered respiratory patterns
decreased LOC
coma
Why does the pediatric patient have bradycardia?
compensation has stopped in the circulatory system
Brain herniation is what type of bleed
epidural bleed = extra volume
Subalpine means what has occurred in the brain
midline shift
Trantenurial UNCAL
Downward brain mvmt
What are the indications for invasive ICP monitoring?
Glasgow less than = 8
Glasgow greater than 8 with respiratory assistance
Traumatic brain injury with abnormal CT
Deterioration of condition
Subjective neurosurgeon judgement
What are the different invasive ICP monitoring/drainage routes?
Subdural
Epidural
Subarachnoid
Intraparenchymal
Ventricular
What is the gold standard used for increased ICP with drainage systems?
Ventricular
What order will the nurse predict the neurosurgeon make regarding draining of fluid from the Intracranial space?
Sustained ICP > 20 then you can drain some of the fluid
What are some nursing interventions for a patient with an increase in ICP?
Familiar with the drainage/monitoring system and insertion procedure
- Readings and s/s
- all equipment and in working order
Mannitol, Sedation/Paraltics, Artificial Tears, Hypertonic Saline
Positioning, Pain control, Cool/Ice packs
Minimal Stimulation
- stool softeners, suction PRN,
Mannitol does what to the ICP
osmotic diuretic to lower ICP (1-5 min quickly carries lots Na and water)
- can cause hypovolemia
Hypertonic Saline
increased Na to pull fluid
- great use with hypovolemia or hypotonic
HTN
How should a patient with increased ICP be positioned for venous drainage?
Head elevated and midline
- venous drainage
What is a minimal stimulation environment?
dim lights
Pain mgmt
crowd control
quiet
calming effect with family
Only lay a hand on them do not rub
With a patient with increased ICP, other than a quiet zone what other way do you calm down the patient?
Sedate and Paralyze
In sedating and paralyzing a patient to prevent them from raising their ICP, what drugs would you use?
Midazolam - sedative
Fentanyl – sedative analgesic
Vecuronium - paralytic
ALSO, Artificial tears ointment for eye lubrication
Never use a paralytic without a
sedative
Midazolam
- sedative
Fentanyl
– sedative analgesic
Vecuronium
- paralytic
When do you suction a patient with High ICP?
only as needed
- due tot he stimulation of the activity
How do you thermoregulate an increased ICP patient?
Cooling or ice packs
- do not use antipyretics
With a patient with increased ICP you want to avoid constipation, so what will be used in conjunction with the other medications?
stool softeners to avoid constipation
Head injury is defined as
damage to the brain or surrounding structures due to mechanical force
What are the 1st to 3rd most common types of head injuries?
1st = falls
2nd = MV injuries
3rd = bicycle injuries
Infants and young children are prone to head injuries due to their
large head
immature neck muscles
thin skull bones
open fontanels
What are the secondary diagnoses due to a primary head injury?
hypoxic
increased ICP
infection
cerebral edema
Minor head injury s/s
Possible LOC
temporary confusion
lethargy
drowsy
irritable
pallor
vomiting
S/S of progression to severe head injury
altered mental status
increased agitation
Tachycardia to Bradycardia
Severe head injury s/s
increased ICP s/s
bulging fontanels
retinal hemorrhage
pupil pinpoint
hyperthermia
unsteady gait
seizures
posturing (flexion and extension)
respiratory depression
Head Injury Dx
H&P (preexisting blood disorders, Hx matches injury, ABCD assessment, neuro, baseline VS)
X-Ray
CT
MRI (for structures)
What does ABCD mean in neuro?
Airway
Breathing
Circulation
Disability
When the brain strikes the skull, what are the medical terms for the impacts?
Coup and countercoup
Coup
point of impact
Countercoup
injury opposite from impact
Acceleration
the stationary head receives a blow
Deceleration
head in motion comes to an abrupt stop
- car crash, fall
With the skull receiving a blow, what increases from the head injury hit?
deformation of the skull increases ICP
Skull fractures occurs as a
direct blow/injury to skull associated with intracranial injury
- depressed, open
Which age range has the most flexible skull?
infants
Basilar Skull Fx
bones at the base of the skull fracture
What are the basilar bones?
Ethmoid
Sphenoid
Temporal
Occipital
Basilar Skull Fractures usually result in
dural tears
Why is the basilar skull fx a serious injury?
proximity to the brainstem
Basilar Skull Fx CONTRAINDICATED to have
NG Tube as it could go into the brain
- request OG Tube
With a basilar fx, the patient has a high risk of infection, so they need to have what vaccine hx or have it now?
Pneumovax
S/S of a Basilar Fx
SubQ bleeding on the mastoid behind the ear
Raccoon eyes
Red tympanic membrane
CSF leak from ears or nose
How do you detect CSF leakage?
HALO effect with a glucose dipstick test
Complications of Head Injuries
Hemorrhage
Infection
Edema
Herniation
How long should the head injury patient be monitored for swelling?
24-72 hours after injury
Epidural Hemorrhage Patho
Blood accumulates rapidly between the dura and skull
Hematoma
Forces brain tissue down and in
Classic S/S of Hemorrhage
momentary unconsciousness
normal period
altered lethargy or coma for hours
What is usually not evident in children with epidural hemorrhages?
classic s/s
- no unconscious period
normal period has (irritability, HA, vomiting, pale, and bulging fontanels)
Epidural Hemorrhage means
Brain bleed on top of the head
- in relation pushes the brain down and inward
How is the epidural hemorrhage diagnosed?
CT
Epidural hemorrhage causes tearing of what artery?
lower meningeal artery
- brain compresses rapidly on the artery causing the tear
Epidural hemorrhage with the lower meningeal tear is more common in what ages?
2+ y/o
because the artery has fully formed after 2 y/o
The lower meningeal artery is fully formed at what age?
2 y/o
Subdural Hemorrhage Patho
vascular injury
between the dura and cerebellum
spreads slowly through the dural space (around the side)
What type of bleed is a subdural hemorrhage?
venous
Venous bleeds are
slow
What is the difference between Basialr Fx, Epidural Hemorrhage, and Subdural Hemorrhage?
Basilar Fx = dural tear, Sub Q bleeding
Epidural = lower meningeal artery tear, bleeding btw dura and skull
Subdural = if also retinal bleed = child abuse, venous bleed, btw dura and cerebellum
Subdural Hemorrhage S/S
irritability
vomiting
Increased head circumference
lethary
coma
seizure
With an infant what is a sign of a subdural hemorrhage?
bulging anterior fontanel
- fontanels have not closed yet and will develop hemorrhagic shock before noticing
A child with a subdural hematoma and retinal hemorrhages needs to be evaluated for?
child abuse = Abusive Head Trauma or Shaken Baby Syndrome
What is the treatment for a Subdural Hematoma?
If small = observation
Butterfly subdural taps in infants
Subdural Drains with cath staying inside
Burr Hole
Surgical Evacuation of Hematoma
Tx for Mild Head Injuries
care and observe at home
family education
Tx for Severe Head Injuries
admit for possible surgery and observation
- Rehab
What do you give a head injury patient for a HA?
Acetaminophen
Comfort care and consults for head injuries are brought in for
palliative/spiritual with child life for siblings
when the damage is too severe and no possibility of survival
What painkiller do you not give to a head injury patient?
Morphine (alter mental status)
Submersion Injuries can occur where?
Bathtubs (infants)
Bucket (toddlers)
Swimming Pools (adolescents)
Lake, ponds, river, ocean
Anywhere with water
Bathtub submersions occur in what age?
Why?
infants; left unobserved in the bathtub
Bucket submersions occur in what age?
Why?
Toddlers; top heavy
What measurement can cause submersion?
1 inch of water
Submersion Injuries are usually unintentional from what ages?
0-19 y/o
birth to 4 y/o having the highest rate
What are the items related to a Submersion Injury?
Hypoxia
Hypothermia
Aspiration
Hypoxia by Submersion happens within
minutes
Lack of O2 -> loss of consciousness -> progressive decrease of cardiac output ->apnea and cardiac arrest
Hypoxia by Submersion
Irreversible damage after
4-6 minutes