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98 Cards in this Set
- Front
- Back
What are assessments of neuro system?
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Mental status
Cranial nerves Swallow sensory motor cerebellar reflex |
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How to check mental status?
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Ask questions.
LOC, Orientation Memory Attention span Language Cognition |
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How to check Swallow?
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Watch them talk
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How to check Sensory?
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Can they feel you touching their feet?
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How to check motor?
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wiggle toes, lift legs, push pull with feet
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How to check Cerebellar?
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balance
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What is used as a rapid neuro assessment?
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Glasgow Coma Scale- uses a point system to quickly assess pt neuro status
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What does the Glasgow Coma Scale consist of?
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Eye opening (spontaneous, to sound, to pain, never)
Motor response (obeys commands, localizes pain, abnormal flexion, etc.) Verbal response (oriented, inappropriate words, etc) |
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Why do we need to constantly assess our pts neuro status?
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we need to constantly assess and monitor pts because we can prevent further complications by using early recognition
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Serious & severe neurologic problems cause varying degrees of ...
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impaired mobility, sensation, and cognition
They may even cause death |
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Cerebrovascular Disorders (CBVD)
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Functional abnormality of the CNS that occurs when the blood supply is disrupted
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CBVD are a group of diseases that affect...
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circulation to brain
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Most common types of CBVD are:
(4) |
Transient ischemic attack (TIA)
Stroke Subarachnoid hemorrhage Vascular dementia |
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Stroke is also called..
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a brain attack
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______ is the primary cerebrovascular disorder and the 3rd leading cause of death in the U.S.
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Stroke
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Why does the brain need a constant supply of oxygen and glucose?
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The brain is unable to store oxygen or glucose and must receive a constant flow of blood to function.
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A change in the normal blood supply to the brain.
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stroke
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What is the #1 risk factor for a stroke?
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High Blood pressure- can cause a clot to break free
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How can A. Fib lead to a stroke?
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A. fib- top of heart quivers, increases change of blood to pool and stagnate in atrium, and clots can form- then can throw a clot
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How can DM lead to a stroke?
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affects the blood vessels, decreases elasticity of vessels,
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Ho can cholesterol lead to stroke?
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High cholesterol- can cause clots
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How can increasing age lead to stroke?
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Increasing age (esp. after 55)- lifetime of accumulation of plaque that can break off into clots
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Why are african-american & hispanics are more likely to die of stroke?
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Diet, HTN, DM, Don’t respond to treatment the same way
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Other risk factors for clots
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Heart disease, poor peripheral blood flow
Unhealthy lifestyles Birth Control |
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Warning signs of stroke
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Sudden severe headache with no known cause.
Sudden numbness or weakness of the face, arm, or leg, especially on one side of the body. Sudden confusion, or trouble speaking or understanding. Sudden trouble seeing in one or both eyes. Sudden trouble walking, dizziness, or loss of balance or coordination. |
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Is a stroke an emergency?
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Yes!!!! The sooner treatment happens the better the outcomes
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What are the two types of strokes?
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Ischemic and Hemorrhagic
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What is the most common type of stroke?
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Ischemic
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What are the two types of ischemic strokes?
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Thrombotic stroke
and Embolic stroke |
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Thrombotic stroke
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caused by a clot and are associated with atherosclerosis. The onset is slow and gradual, LDL accumulates until the vessel becomes occluded, the tissues beyond the clot become ischemic.
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Embolic stroke
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caused by embolus which is usually caused by heart issues like A fib on a mechanical heart valve. Onset is Sudden. There is a rapid decline in neuro status such as, slurred speech, expressive aphasia, paralysis and ↓ LOC (level of consciousness). Embolic strokes can easily lead to hemorrhagic stroke d/t bleeding in the brain.
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Hemorrhagic stroke
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bleeding within or around the brain, it usually occurs during activity and results from HTN, rupture of Arteriovenous Malformation (AVM), or amphetamine abuse. There is rapid decrease in neuro status and deep stupor or coma.
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When do ischemic strokes usually occur?
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During sleep, or early in the morning
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What is the artery usually involved when having an ischemic stroke?
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MIDDLE CEREBRAL ARTERY MCA
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Causes of ischemic stroke
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occlusion of cerebral artery either by thrombus or embolus
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Causes of Hemorrhagic stroke
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In this type of stroke, tissue integrity is interrupted and bleeding occurs into the brain tissue or into the surrounding brain (ventricular, subarachnoid, or subdural).
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Complications from stroke?
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Increased intracranial pressure (ICP): the patient is most at risk for ICP resulting from edema during the first 72hrs after onset of stroke.
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S/S of increased intracranial pressure (ICP)?
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decreased LOC, behavior changes, headache, Nausea, vomiting, change in speech pattern, aphasia, slurred speech, pupillary changes (dilated, nonreactive, or constricted), severe HTN, widening pulse pressure, Bradycardia, ataxia, seizures, cushings triad. Note: LOC changes will depend on extent of ICP
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What med helps decrease intracranial pressure?
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Mannitol
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elevate bed to what degree to reduce intracranial pressure?
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HOB elevated but no more than 30° ( (will promote venous drainage and decrease intracranial pressure)
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What positioning is contraindicated for cases of intracranial pressure?
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No hip flexion: this will push more blood up to the brain from the lower extremities
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If brain aneurysm suspected what room precautions can we have?
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Relieve sensory deprecation and anxiety.
Keep sensory stimulation to minimum for aneurysm precautions |
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What safety precautions are necessary for stroke patients?
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Seizure precautions
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What labs diagnose stroke?
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No definitive lab test to Dx a stroke. Some lab values can clue you in the right direction, such as bleeding times; however, prior to Lab tests a thorough assessment must be made.
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What is neglect syndrome?
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particularly common with strokes in the right cerebral hemisphere. The patient is unaware of the existence of his/her paralyzed side. Will groom the functioning side but totally ignore the affected side of the body
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What are the major concerns for stroke patients? (long list)
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Seizure
Communication neglect syndrome Feeding/swallowing psychosocial/depression fall risk bowel/bladder training etc |
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What is Brocca's?
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Expressive aphasia-damage to the Broca’s area of the frontal lobe. It’s a motor speech problem in which the patient generally understands what is said but cannot communicate verbally. He/she also has difficulty writing but may be able to write.
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What is Wernicke's?
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Understanding/Receptive aphasia- injury involving the Wernicke’s area in the temporoparietal area. Patient cannot understand the spoken and often the written word. Although he/she may be able to talk, the language is often meaningless. Neologism (make up of words)
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Ways to improve communication for stroke patients
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Simple one step commands
Flashcards/computer/communication board avoid yes no questions |
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What is a TIA?
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Transient Ischemic Attack (TIA)- Temporary neurologic deficit resulting from a temporary impairment of blood flow
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How long do TIAs last?
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Symptoms Lasts a few minutes But are always < 24 hrs.
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Why is it important to pay attention to TIAs?
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“Warning of an impending stroke”
Multiple TIAs increase risk of major stroke |
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Why do TIA pts need diagnostic workup?
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required to treat and prevent irreversible deficits and to prevent stroke and permanent damage
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What is the 2nd most common cause of stroke?
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hemorrhagic strokes
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When do hemorrhagic strokes usually occur?
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During activity
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What do hemorrhagic strokes result from?
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- Ruptured aneurysm
- Rupture of an AVM- - Severe HTN - Amphetamine abuse |
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What is an AVM?
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happens during embryonic development, a thin mass of vessels- like spaghetti- that can easily rupture, a rise in BP can cause this
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Do hemorrhagic strokes gradually come on?
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No, They occur suddenly (for the most part unless they are due to HTN)
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What does it look like when a person suffers a hemorrhagic stroke?
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Pts may go into a deep stupor or coma, and seizures can occur
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Hemiplegia
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Half sided paralysis
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Apraxia
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Inability to carry out purposeful movement
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Hemiparesis
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half sided weakness
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Dysarthria
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slurred speach
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Hemianopsia
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Half of field of vision of ONE eye is lost
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Agnosia
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cannot recognize objects- usually due to a loss of sensation
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expressive aphasia
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(Broca’s area)
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receptive aphasia
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(Wernicke’s area)
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Which hemisphere is the dominant one?
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Left Side- language, words
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How quickly must a pt be evaluated if a stroke is suspected?
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10 minutes!
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What must be evaluated when stroke suspected?
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Cognitive, motor, & sensory changes
cranial nerve assessment CV assessment |
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Cranial nerves mnemonic
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Oh, Oh, Oh, To Touch A Female's Vagina Gives Vinny A Hard-on
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Cranial nerve V
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trigeminal- facial
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Cranial nerve VII
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facial, expressions, smiling
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Cranial nerve IX, X
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glossopharynegeal, vagus
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Cranial nerve XII
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hypoglossal
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Cranial Nerve 2,4,6
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eye movement- cardinal signs
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What to assess before any lab work is done on a stroke patient?
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Assess LOC!!
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The amount of change in LOC is going to depend on the extent of ______ ________
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intercranial pressure
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What type of tests are used to find out the cause of a stroke?
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Angiogram of head
carotid duplex CT MRI MRA Doppler ECG |
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What is a carotid duplex, and what will it tell us?
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Is an ultrasound of the carotids and will show if the neck arteries have narrowed
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What type of CT for stroke pts and what will it tell us?
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non contrast- identify ischemic or hemorrhagic cause- will show wether there is a bleed or not
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What will an MRI tell us about stroke pt?
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more useful after a stroke in order to show any edema or necrosis
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What is an MRA and what does it tell us for a stroke pt?
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Magnetic resonance angiography (MRA)- Shows vessel structure looking for abnormal vessels in the brain
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When is an ECG done for stroke pt?
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measures cardiac output, done if stroke is caused by blood clot, and shows irregular HB such as A fiv and how ventricles are doing
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Why do we need to closely monitor BP for stroke pts?
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high BP more increase risk of stroke
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Why check PT, INR, PTT for stroke pts?
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is there is any bleeding we want to see what bleeding times are
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Why are stroke pts on EKG?
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Holter monitor, cardiac enzymes- to see if there is an issue with the heart that i causing a clot
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What tool do we use to assess stroke patient's neurological status?
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NIHSS (National Institute of Health Stroke Scale )
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To repeat for the 50th time, what do we continuously monitor with stroke pts?
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Carefully monitor intracranial pressure!!!
Continue to assess LOC and neuro status! Monitor BP! |
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What to do to help intracranial pressure?
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Mannitol- helps to decrease intracranial pressure
HOB up- more more than 30 decrees No hip flexion- pushes more blood up to increase intracranial pressure Maintain BP- do not want it to get any higher Frequent neuro assessments- Keep assessing LOC!!! |
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What sensory stimulation to modify for stroke pts?
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Keep sensory stimulation to a minimum for aneurysm precautions
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Carotid Endarterectomy
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Procedure will help remove plaque from the carotid artery, will open artery enough to reestablish blood flow to go through, and will then decrease risk of stroke
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Post-Op Endarterectomy
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Maintain BP (too high may cause hemorrhage)
Neuro checks (CNVII, X, XI, XII) Gag reflex (CN IX) Assess for difficulty swallowing, hoarseness Monitor labs |
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FAST
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Face
Arms and Legs Speech/smile Time |
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ataxia
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gait disturbance
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neoglism
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make up of words
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Agnosia
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loss of ability to recognize or use objects correctly
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Apraxia
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Loss of ability to perform purposeful movements.
Example: a person may be unable to shave, dress, of perform other once familiar and purposeful tasks |