10/21 CVA Exam, eval Flashcards

1
Q

Transient Ischemic Attack

A

Transient episode of neurological dysfunction

Temporary disturbance in blood supply to the brain, spinal cord or retina without permanent death of tissue.

Symptoms usually last ≤ 1 hour.

3-17% 90-day risk of a completed stroke.
Up to 50% occur within 48 hours of the TIA.

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2
Q

Stroke definition

A

Disruption of the vascular supply to the brain, brainstem or spinal cord that leads to infarction (death) of CNS tissue.

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3
Q

Stroke Classification

A

Ischemic (61 - 87%)
Thrombotic Vs Embolic
Large Vs Small vessel
Arterial Vs Venous

Hemorrhagic
Intraparenchymal Vs Subarachnoid
Primary Vs Secondary (conversion)
Higher proportion of hemorrhage in children

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4
Q

Large vessel thrombotic stroke

A

Slow, stuttering onset due to gradual occlusion +/- collateral circulation
Possibly preceded by TIA

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5
Q

Small vessel thrombotic “lacunar” stroke

A

Associated with longstanding hypertension and diabetes

Basal ganglia, internal capsule and brainstem

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6
Q

Cardioembolic Etiologies of ischemic stroke

A
Valvular atrial fibrillation 
Nonvalvular atrial fibrillation 
Acute myocardial infarction 
Bacterial endocarditis
DVT with a patent foramen ovale
Mitral valve prolapse
Prosthetic mechanical heart valves
Possible injury in multiple vascular distributions
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7
Q

Cerebral venous thrombosis

A

Relatively rare

Higher risk in peripartum period, OCPs + smoking, coagulopathies

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8
Q

Hemorrhagic Stroke

A

Fast, large volumes of blood
Increased mortality
If survived, decreased morbidity

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9
Q

Signs of hemorrhagic stroke

A

Vomiting, systolic BP >220 mm HG, severe headache, coma, decreased level of consciousness and progression over minutes-hours suggest hemorrhage.
Rapid deterioration in neurological status is common

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10
Q

Intraparenchymal Hemorrhagic Stroke

A

75% of hemorrhagic strokes

Hypertensive hemorrhages or Non-hypertensive hemorrhages

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11
Q

Hypertensive hemorrhage

A

Rupture of micro-aneurysms

Putamen»thalamus, pons, cerebellum and cerebral hemispheres.

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12
Q

Non-hypertensive hemorrhages

A

Sympathomimetic agents
Cavernous angiomas, amyloid angiopathy, intracranial tumors, bleeding disorders, trauma, vasculitis, hemorrhagic conversion, infection

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13
Q

Subarachnoid Hemorrhagic Stroke

A

25% of hemorrhagic strokes
Progressive deficits over minutes to hours
Headache and decreasing consciousness

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14
Q

Subarachnoid Hemorrhagic Stroke Etiology

A

Saccular aneurysms
Most common cause of SAH
45 % risk of death in the 1st 30 days - Most within a few days

Arteriovenous malformations (AVMs)

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15
Q

Emergency Medical Services Management of Stroke

A
Airway, breathing and circulation (ABC)
Cardiac monitoring 
Intravenous access 
Oxygen, if needed
Rapid identification of stroke/time of onset
Rule out (and treat) stroke mimics
Keep NPO (no food or drink)
Alert receiving ED 
Rapid transport to closest appropriate facility
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16
Q

ED Evaluation During/Following Stroke

A
General medical examination
Identify contributing factors:
NIH Stroke Scale
Glasgow Coma Scale
Dysphagia screen
Glucose
Cardiac monitoring for 1st 24 hours
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17
Q

Medical Diagnosis of Stroke

A

Non-enhanced brain CT scan (NECT)

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18
Q

What is the gold standard for vascular evaluation during stroke?

A

Conventional angiogram

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19
Q

When is MRI better than NECT better for diagnosing stroke?

A

Acute small cortical strokes
Posterior fossa lesions
Acute vs. chronic lesions
Subclinical satellite lesions

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20
Q

Medical Treatment of Ischemic Stroke

A
Airway, breathing and circulation (ABC)
Adequate hydration
Treat elevated temperatures
Glucose control
Cardiac monitoring for 1st 24 hours
Cautious initial approach to HTN
Oxygen only if hypoxic
Identify etiology of hypovolemia or hypotension
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21
Q

BP targets following stroke

A

If given TPA, < 185/110

If no TPA, < 220/120

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22
Q

Medical Treatment of Hemorrhagic Stroke

A
Airway, breathing and circulation (ABC)
Rapid transport
Immediate imaging
Careful blood pressure management 
Normalize fluid balance and electrolytes
Control seizures
Normalize body temperature
Correct any bleeding disorders (specific to the problem)
DVT prophylaxis
Clot evacuation and ventricular drainage as required
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23
Q

Name the likely type and location (if applicable) of stroke:

A 60-year-old woman was brought to the ED leg motor weakness.

24
Q

Name the likely type and location (if applicable) of stroke:
33 year old man complains of headache and then loses consciousness at work. Onset of symptoms accompanied by a seizure.

Patient requires intubation in the field and is brought to the ED unresponsive.

A

Hemorrhagic

Intraparenchymal – progressing very quickly, very severe

25
Name the likely type and location (if applicable) of stroke: | A 52-year-old man complained of severe headache prior to loss of consciousness
Hemohhragic, subarachnoid - No seizure
26
Name the likely type and location (if applicable) of stroke: The patient was treated with TPA. Approximately 10 hours after the TPA, the patient was noted to be much more drowsy
Hemorrhagic conversion
27
PT Stroke Exam: History
``` Age and living situation Participation and Activity level Type and location of stroke How long since stroke Medications Blood pressure parameters Co-morbid, pre-morbid conditions ```
28
Common impairments of body structure/function following stroke
``` Lack of adequate force production Lack of adequate timing Abnormal synergistic movement patterns Muscle imbalance Lack of adequate motor planning Decreased postural control Sensory-Perceptual, visual deficits ```
29
Assessing fall risk: less than one month post-CVA
<30 Berg Balance Score Apraxia Cognitive deficits Low Functional Independence Measure (FIM) scores
30
Assessing fall risk: Community-dwelling stroke survivors > 6 months after CVA
Self-reported persistent balance problems while dressing is predictive of falls
31
Fall predictors in typical older adults vs. post-CVA
While incontinence, medications, and history of falls are predictive of falls in older adults, they are not predictive post-CVA
32
What is apraxia?
Loss of ability to execute skilled or learned movement patterns on command in the absence of weakness, sensory loss, comprehension difficulty, abnormality of tone or posture, or intellectual deterioration.
33
What is ideational apraxia?
Planning of a movement fails Patient is unable to conceptualize how a movement pattern must be organized.
34
What is ideomotor apraxia?
Plan for the movement is intact, but the execution fails. Damage within pathways connecting the areas in which the plan is conceived to those responsible for innervating the motor plan
35
What is Aphasia?
Impairment of language associated with damage to the language dominant hemisphere. Nearly always involves damage to the left fronto-temporal and/or temporo-parietal regions. May affect verbal expressive output, fluency, comprehension, naming, reading, writing and repeating.
36
Broca's vs. Wernicke's Aphasia
Broca's tends to be more expressive, Wernicke's receptive
37
Keys to communicating with someone with aphasia
Give them time to speak Reduce environmental noise Try other, non-verbal means of communication Confirm that the pt uses yes and no correctly
38
Hemi-neglect
Failure to attend to, respond to, and/or report stimulation that is introduced contralateral to the lesion. Most often seen with non-dominant parietal association area lesions. Affects contralesional side.
39
Hemi-neglect as a prognostic factor
Persistent neglect is a negative functional outcome predictor
40
Intrapersonal Hemi-neglect
Contralateral hemineglect of patient’s own body, associated with anosagnosia (denial of deficit)
41
Peripersonal Hemi-neglect
Hemispatial neglect of contralateral stimuli within reaching distance.
42
Extrapersonal Hemi-neglect
Hemispatial neglect of contalateral stimuli beyond reaching distance
43
Dysarthria
Difficulty producing speech
44
Dysphagia
Difficulty swallowing Difficulty eating Dealing with secretions
45
StrokEDGE Task Force Top PT Tests and Measures following Stroke
``` 6MWT 10 m walk Modified Ashworth Scale Berg Balance Test Functional Reach Test Dynamic Gait Index Fugl-Meyer (Motor ) Orpington Prognostic Scale Postural Assessment Scale for Stroke Stroke Impact Scale Tardieu Spasticity Scale Action Research Arm Test (ARAT) Chedoke-McMasters ```
46
Fugl-Meyer Motor scale
100 point motor domain is reliable, valid and responsive to clinical change
47
Chedoke-McMaster Stroke Assessment
Measure of impairments and disability level Impairments in 6 dimensions: shoulder pain, postural control, arm, hand, leg, foot Measured on a 7 point scale following Brunnstrom stages Disability measured by gross motor function and walking Measured on same 7 point scale as FIM
48
Postural Assessment Scale for Stroke Patients (PASS)
``` Maintaining a Posture (0-3) Sitting without support with feet on floor Standing with support Standing without support Standing on non-paretic leg Standing on paretic leg ``` ``` Changing Posture (0-3) Supine to affected side lateral Supine to non-affected side lateral Supine to sitting EOT Sitting on edge of table to supine Sitting to standing Standing to sitting Standing, picking up pencil from floor ```
49
Stroke Impact Scale (SIS)
Questionnaire; 5 point scale - Not Difficult at all to Extremely Difficult ``` Physical problems Memory and thinking Mood and emotions Communication Activities in a typical day Mobility in home and community Hand function Ability to participate in usual, meaningful activities On a scale of 0=100, how much have you recovered? ```
50
Action Research Arm Test (ARAT)
Total score 0-57 Scored 0-3 on each item Minimal clinical important difference (MCID) 5.7 points
51
Glasgow Coma Scale (GCS)
Assesses EYE OPENING, MOTOR RESPONSE, VERBAL RESPONSE TOTAL (3–15): _______
52
Glasgow Coma Scale (GCS) Eye Opening
None = 1 Even to supra-orbital pressure To pain = 2 Pain from sternum/limb/supra-orbital pressure To speech = 3 Non-specific response, not necessarily to command Spontaneous = 4 Eyes open, not necessarily aware
53
Glasgow Coma Scale (GCS) Motor Response
None = 1 To any pain; limbs remain flaccid Extension = 2 Shoulder adducted and shoulder and forearm internally rotated Flexor response = 3 Withdrawal response or assumption of hemiplegic posture Withdrawal = 4 Arm withdraws to pain, shoulder abducts Localizes pain = 5 Arm attempts to remove supra-orbital/chest pressure Obeys commands = 6 Follows simple commands
54
Glasgow Coma Scale (GCS) Verbal Response
``` None = 1 No verbalization of any type Incomprehensible = 2 Moans/groans, no speech Inappropriate = 3 Intelligible, no sustained sentences Confused = 4 Converses but confused, disoriented Oriented = 5 Converses and oriented ```
55
NIH Stroke Scale (NIHSS)
``` Level of Consciousness Best Gaze Visual Facial Palsy Motor Arm Motor Leg Limb ataxia Sensory Best Language Dysarthria Extinction and Inattention (neglect) ```
56
Modified Tardieu Scale
Velocity One = V1 Slow movement Goniometric measurement at this joint angle Velocity Two = V2 Fast movement Goniometric measurement at this joint angle May provide more precision in documenting amount of spasticity and amount of contracture
57
Functional Independence Measure (FIM)
20 functional items measured on 7 point scale ``` 7 = Independence 6= Modified Independence 5= Supervision (subject does 100%) 4= Minimal Assist (subject does 75%) 3= Moderate Assist (subject does 50%) 2= Maximal Assist (subject does 25%) 1= Total Assistance (subject does < 25%) ```