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525 Cards in this Set

  • Front
  • Back
Stroke is the __ most common cause of death in the US
3rd
Modifiable risk factors of stroke:
Hypertension
Smoking
Obesity
Elevated serum fibrinogen levels
Diabetes
Sedentary lifestyle
Contraceptives w/ high levels of estrogen
Systolic hypertension
Cardiac disease
Atrial fibrillation
Alcohol abuse
Non-modifiable risk factors for stroke:
Age (esp. past 75)
Gender (higher in males)
Race (higher for African-Americans and Hispanics)
Heredity
Types of stroke:
ischemic stroke (88%)
Hemorrhagic strokes (12%
Types of ischemic stroke:
TIAs (transient ischemic attacks)
Thrombosis
Embolism
Lacunar stroke
Types of hemorrhagic strokes
Hypertensive
Aneurysm
Causes of ischemic stroke:
Arterial supply to the brain is blocked.
Caused by narrowing of arteries- atherosclerosis or cholesterol deposition.
Atherosclerosis can lead to thrombotic or embolic strokes.
Caused by blood clots moving from the heart. Often as a result of irregular heart beat (a-fib), heart attack, or abnormalities of heart valves.
Hemorrhagic stroke-
bleeding from an artery into the brain causing damage to where the blood goes.
TIAs-
Not really strokes, but precursors of stroke.
Brief, focal loss of function.
Full recovery w/in 24 hours.
Probably due to ischemia.
If TIAs are caused by plaques, treatment:
include endarterectomy or angioplasty to surgically stop progression.
Conservative approaches to treatment of TIAs:
monitor blood pressure, blood flow, diet, and exercise.
Immediately following stroke comes a medical management period in which health care professionals attempt to:
Stop progression of the lesion
Reduce cerebral edema
Decrease risk of hydrocephalus
Treat seizures
Reduce secondary complications
Thrombosis causes __% of strokes
50
Thrombosis develops in...
minutes, hours, or days.
Thrombosis occurs frequently at...
places where arteries branch and where plaques may have narrowed the arteries for years.
__% of thrombotic strokes occur during sleep.
60
People who develop thrombosis often also have:
hypertension, diabetes, or vascular disease elswhere
Transitional area-
Around the area of anoxia, this area has decreased blood flow. Effects here are reversible.
Thrombotic and embolic infarctions comprise __% of all strokes.
80
Signs of stroke:
can you raise arms, problems with balance, slurred speach, tongue deviation.
Treatment of thrombosis
Medication- thrombolytic therapy (urokinase, streptokinase and t-PA) must be given within 6 hours. 90-180 minutes is optimal. Most patients wait 24 hours.
If stroke is hemorrhagic, thrombolytics will...
often kill them.
Anti-coagulant drug uses:
may stop strokes in evolution and TIAs.
Anti-coagulant drugs include:
heparin, warfarin (coumadin), and antiplatelet drugs.
Careful patients don't have an injury when on these drugs b/c it's difficult to stop bleeding.
Embolic stroke is the cause of __% of strokes.
38
Where does an embolus come from?
the heart or plaques from any artery.
What artery is most involved in embolic stroke?
middle cerebral
How fast do embolic strokes occur?
Rapidly, within seconds or minutes, and without warning. No opportunity for collateral blood supply to develop.
These are more severe strokes.
What types of medication may be used for embolic strokes?
thrombolytics
Focus of primary and secondary treatment of embolic strokes focus on:
prevention. Includes anticoagulant therapy for people with heart disease or other conditions causing blood clots.
Secondary prevention of embolic strokes include:
preventive care after stroke including diet, exercise, and healthy lifestyle.
Lacunar strokes-
ischemic strokes that occur in smaller arteries in the brain
Lacunar strokes occur:
occur in smaller penetrating "end" arteries.
Patients make remarkable recoveries.
Frequently occur in people w/ multiple medical diagnoses involving the circulatory system.
Completed stroke-
deficits persist more than 1 day. Deficits are stable; nothing's changing.
Progressive or extending stroke-
Ischemic stroke w/ deficits that increase over time b/c of repeated emboli or developing thrombus.
Hemorrhagic strokes are caused by...
AV malformations or weakness of arterial walls, aneurysms, or head injuries.
In hemorrhagic strokes, bleeding in the brain...
produces an oval shaped clot that resolves slowly. No longer room for brain.
Treatment for hemorrhagic stroke:
lowering arterial blood pressure to prevent further bleeding, and surgery to remove the clot and decrease intracranial pressure. May also include bleeding into subarachnoid space.
Aneurysm
Break bleeding into the brain
Which arteries may be involved in stroke?
Middle cerebral (A of stroke)
Anterior cerebral
Posterior cerebral
Middle cerebral A:
80% of strokes.
Contralateral pralysis of upper extremity.
Contralateral sensory loss of upper extremity
(legs less involved)
Hemianopia
Limb-kinetic apraxia (most commonly in L hemisphere.
Dominant hemisphere middle cerebral A strokes cause
Speech deficit (L side of brain)
Non-dominant hemisphere strokes cause:
hemi-neglect, unawareness of distance and midline. (R side of brain)
Anterior cerebral A strokes cause:
(10% of strokes)
Contralateral paralysis (lower more than upper)
Contralateral sensory loss (lower more than upper)
Grasp reflex, sucking reflex
Lack of spontaneous behavior, motor inattention, perseveration, and amnesia.
Posterior cerebral A strokes cause:
(7% of all)
Cortical blindness of contralateral visual field (can see, but can't process)
Memory deficit
Ataxia
Contralateral hemiparesis (usually due to cerebellar damage)
Involvement of thalamus can result in contralateral sensory loss.
Why is blood flow so important?
Brain doesn't store oxygen or glucose effectively.
Oxygen consumption increases from the brain stem to the cortex.
Why can such a small infarct cause so much damage?
Depends on location.
Predictors of recovery from stroke:
Return of arm movment in first 2 weeks- possibility of arm recovery.
No grip recovery at 24 days correlates with no arm function at 3 months.
Spontaneous stroke recovery-
Recovery in the majority of stroke patients occurred within the 1st six months.
Severity of initial deficit is __ proportional to the prognosis for recovery.
Inversely
What is responsible for spontaneous stroke recovery (SSR)?
1. Functional or adaptive recovery
2. Recovery of post-stroke edema
3. Reperfusion of ischemia
4. Diaschisis
5. CNS reorganization
Functional or adaptive recovery-
Recovery defined as neurological or functional.
Functional recovery-
a result of clients learning to do previously learned tasks and becoming independent in areas like self-care, mobility, independent living, social, and vocational skills. Inversely proportional to the degree of damage from the stroke.
Recovery of post-stroke edema-
Up to 8 weeks.
Secondary edema disrupts neuronal functioning.
Although hemorrhages tend to be associated w/ more damage from edema, recovery is often more dramatic as well.
An ischemia insult consists of:
An area of infarct (which doesn't resolve) surrounded by an area of moderate blood flow (ischemic penumbra). This area is at risk for ischemia but is still salvageable.
Reperfusion-
Through drug therapy and time, can allow non-functioning neurons to resume function.
Diaschisis-
A state of low reactivity that occurs after injury to the brain in areas of the brain previously stimulated by this portion of the brain that is where neuronal connections lie. Recovery of reactivity in these more distal portions of the brain occur after stroke.
What occurs during CNS reorganization?
synaptogenesis, which may include strengthening current synapses.
Reflection of the demands that we place on our patients. Alter demands by altering task and environment.
How is synaptogenesis enhanced?
motor learning- practice of new and learned skills.
Re-acquiring motor skills requires changes to:
undamaged portions of the involved cortex, as well as to the undamaged cortex.
Clinical trials support reorganization through:
CIT/forced use
Supported body weight treadmill training
Recumbent biking
Extensive early HEP
E-stim
LE weight bearing in a biomechanically correct position.
Avoiding secondary complications.
Stroke implications: initial impairments-
Motor, sensory, perceptual, cognitive, and communication
Stroke implications: secondary impairments/conditions
Muscle shortening, contractures, pain, subluxation, DVTs, edema, seizures, bowel and bladder dysfunction, sexual dysfunction, dysphagia, depression, etc.
Stroke implications: functional outcomes
Performance of day-to-day activities including participation in leisure and vocation, and the psychological and social impact on the person and their families. Not just self care!
The first step in establishing hypotheses about the impairments and subsequent dysfunction associated w/ stroke is...
understanding cortical function
Cerebral cortex is composed of what lobes?
frontal, parietal, temporal, occipital
What are the functions of the frontal lobe?
Motor- Primary motor area, Pre-motor area, Motor association area

Executive cognitive skills- judgment and reasoning

Personality- emotions- Motivation and inhibition/social skills.

Expressive speech- difficulty expressing themselves- expressive aphagia
What are the functions of the parietal lobe?
Primary sensory areas- receives and processes the sensation of touch

Sensory association areas- analyzes combined info from all senses.

Where you are in space, where you are in relationship to one another.
L brain functions of parietal lobe
R/L discrimination
Praxis- establishing motor plans
R brain functions of parietal lobe
Visuospatial orientation- background vs. foreground, distance, height perception, etc.
Functions of the temporal lobe?
Auditory sensation and memory- the what system
L brain functions of the temporal lobe
language (receptive aphagia- problems hearing, speaking)
Interpretation
R brain functions of the temporal lobe
Sounds, rhythm, and music
Visual performance
Affective expression
Functions of the occipital lobe
synthesis and integration of visual info
Visual memory
Formation of visuospatial relationships.
Visual reception
R brain occipital lobe attends to what visual field(s)?
L and R
L brain occipital lobe attends to what visual field(s)?
R only
Why does L hemineglect occur?
the L side of the temporal occipital lobe only attends to the R visual field so when there is R brain damage, you often lose the L visual field.
People w/ ___ hemisphere strokes have more primary deficits that create greater dysfunction and have poorer functional outcomes than people w/ ___ hemisphere damage. Why?
R; L; Language, lose a lot more, lose ability to know where you are in space, which affects ability to move in space, etc.
L brain dysfunction causes:
R hemiparesis
R sensory loss
Aphasia w/ decreased reading and writing
Apraxia/motor planning
L/R confusion
Compulsiveness
Slowness
Depression
R brain dysfunction causes:
L hemiparesis
L sensory loss
Visuospatial impairment
Poor body scheme
Poor attention
Neglect syndrome
Memory probs for procedures
Time disorientation
Problem solving
Poor awareness
Impulsiveness/safety
Concrete thinking
Emotional lability
Steps in clinical decision-making for stroke assessment:
1. Initial data collection- Chart review: lesion site, severity, course of stroke and management to date.

2. Acquire info about patient's pre-morbid performance of roles w/in context. Patient and family interview; establish goals

3. Skilled observation of task performance

4. Establish the hypothesis or relationship between performance of tasks and impairments.

5. Determine what additional info you need from others, from specific tests and measures of standardized tests of task performance and/or impairments.
Purpose of top down approach to assessment:
Determine roles, environemnts and tasks that have meaning.

Prioritize the roles/tasks by their importance to the person

Establish present competency in role/tasks through skilled observation

Observation of functino can help determine underlying impairments/reasons the person cannont perform tasks and provide connection to function.
Advantages of top down approach:
Streamlines eval

Helps to focus on specific problems

Focuses on how intervention will impact the disability and functional limits

Insures functional outcome
Advantages and limits of bottom up approach:
Helpful for new therapist for refining observation skills.
Costly
Context
Must infer meaning of impairment to functional limitations and disabilities.
When should you use tests of impairments?
When they will help you differentiate what the underlying impairments are that are causing functional loss. If it makes a difference to your intervention.
Acute care rehab goals are...
secondary to medical stability and are short-term and in readiness for more extensive rehab; usually restorative/remedial intervention
Acute care detailed evaluation is...
rare b/c of time limits and risky resulting in errors in d/c recommendations
Acute care assessment should include...
should include observation of motor impairment, cognition and language, balance, visual perception and executive function
NIH stroke scale is used for...
prediction
Long term acute care (LTAC) for people w/ strokes when:
Continued medically unstable require more than 100 days care which is more than available for SNF. Either medically induced coma or ventilator dependent.
Assessment in LTAC
Much like acute care w/ emphasis on observation
Goals in LTAC
Prevent physical and mental deterioration as person becomes medically stable.

Limited rehab goals; ROM, positioning, basic ADLs
SNF, TCU (transitional care unit), ECU (extended care unit)
100 day extension of hospitalization (Med A SNF).
Cannot withstand rigors of IP rehab.
SNF, TCU, ECU goals
either to go on to IP or to home w/ continued therapy
SNF, TCU, ECU assessment
comprehensive to understand all aspects of performance
Stroke assessments for SNF include:
Minimum data set
Cognitive screening
Functional limitation assessments
ADL assessments
Minimum data set-
required initial assessment at the time of admission
Cognitive screening-
Motor learning requires capacity for learning
Mental status exam
IP rehab for people w/ strokes include those who are..
medically stable and ready for intensive therapy (Med B)

3 hours of therapy daily w/ goal of highest level of performance necessary to go home.
IP assessment :
Understand all aspects of the person's ability to perform ADLS/IADLS and the impact of stroke on person's wants and needs to resume previous roles.

Preparation to return home and participating in community.
Stroke assessments for IP:
IRF-PAI at time of admission
FIM (functional independence measure)
FIM
scaled items from 1-7 in over 6 areas.
Widely used for program evaluation and an individual outcome tool.
Self-care and mobility
Predict caregiver burden
Home health for people w/ strokes
Next step toward community reintegration
Progress expected to continue w/ assistance of family.
Assessments center around tasks in environment and modification.
Caregiver's role is one of the significant parts of intervention.
Stroke assessments for home health
OASIS- initial assessment

Stroke Specific QOL scales (SS-QOL)

Other measures that provide quantifiable understanding of the impact of the stroke on person including disability measures.
OP for people w/ stroke
1860 cap
Maximum independence in all aspects of life- community reentry
Assessment in OP
Comprehensive assessments centered on activities, responsibilities, and roles- COPM to est goals
Analyzing tasks to improve performance in OP includes:
Assisting caregiver- functional outcome measures
Work
Community based tasks
Driving
COPM-
Clients ID things they need and want to do in areas of self care, productivity, and leisure.

Rate importance of the things they want to do on scale of 1-10

Determines a performance over satisfaction measure determined at admission and d/c
Generally speaking, as the person becomes less acute and the person is coming to the end of rehab from acute hospitalization to home halth, selection of assessments and intervention should be:
top down and disability/compensatory based
What are the 3 scenarios when planning intervention?
1. Remediate/correct impairments that may correct the disability or functional limitation- restorative/remedial intervention design
2. Remediate/correct the disability or functional limitation itself by using existing streangths- can be restorative and compensatory
3. Compensator/adaptive approach- using alternative methods to overcome the disability or functional limitation
UE impairments after stroke:
Pain
Contractures
Superimposed ortho conditions
Learned non-use
Loss of biomechanical alignment
Weakness
Tone
What UE impairments cause:
Inability to WB during ADLs and mobility.
Inability to move objects across a surface or from one surface to another using grasp.
Inability to reach and manipulate, including poor arm trajectory between point A and B and shaping of the hand for coordinated tasks.
Who will recover arm function?
Grades 3 or above on active finger extension scale on day seven after stroke predicts good recovery.
Presence of an initial shoulder shrug 11 days after predicted good hand movement and function 1-3 months after.
Shoulder abduction at 11 days predicted good hand movement at 1 month.
Synergistic hand movement 11 days predicted good hand function after 1-3 months.
AROM shoulder flexion and middle finger flexion after 3 weeks.
What does it take to move the arm to drink from a water bottle?
Visually locate object- eye-hand coordination to see and calculate distances involved.
Must have adequate reach and grasp.
Must manipulate object- form grip, grasp, and release.
Sufficient cognition to generate a plan, execute plan, maintain intention throughout plan.
Assessing visual regard:
1. Can patient locate and maintain eye gaze on a fixed or moving target in the central or peripheral field. (Eyes move, head still)
2. Can the patient locate then stabilize on a target in the far periphery (eyes on target while head moves)
3. Eye-head-trunk movements to find objects in far periphery.
4. Does patient complain of blurriness, dizziness, double vision?
People w/ stroke may have what problems w/ visual regard?
A visual field cut
Visual neglect
Breaking visual fixation- lack of flexibility/adaptability to change
Slowed reaction time
UE m weakness is a problem that starts...
proximally
GH dysfuction following stroke... The Shoulder Rules:
Position of thoracic spine
Position of scapula on thorax
Function of rotator cuff
Typical thoracic spine position of patients:
Thoracic flexion w/ lateral flexion toward weak side.
What contributes to thoracic spine position in patients?
Weak pelvis acted on by gravity causing PPT.
Lumbar flexion may be as mild as WB behind ischial tuberosities.
W/ poor pelvic stability, thoracic flexion occurs causing elongation in back extensors and shortening of rectus abdominis.
MM that become shortened w/ overall kyphosis and side bending:
rectus abdominis, obliques.
IO tends to become tight so they rotate down toward the side and have lateral flexion
MM that become elongated and weak w/ spinal flexion and lateral flexion
Lat dorsi
Glut max
Back extensors
If lose visual regard, will you regain arm function?
no
B/c the thoracic spine is in a position of kyphosis and side bending toward the involved side, the scapula...
follows the curve of the thorax.
Exacerbated by weight of the arm causes scapular downward rotation.
Weakness in serratus anterior causes the scapula to...
wing and tip.
B/c thoracic spine and serratus weakness...
glenoid tips down and places humerus at risk for s/l
Downward scapular rotation (w/ winging and tipping) causes...
Disorientation of glenoid fossa. Instead of facing up, out, and forward at about a 60 degree angle, it faces downward resulting in decreased static stability.
What becomes stretched and weak w/ downwardly rotated scapula and what does it cause?
SA and LT leading to problems initiating upward rotation.
What becomes short w/ downwardly rotated scapula and what does it cause?
Levator scapulae and rhomboids; shortening leads to further elevation and downward rotation
transcurrir
to pass away
Loss of compressive muscle force that compresses head of humerus into glenoid is caused by loss of...
whole cuff
Inability to initiate abduction caused by loss of...
supraspinatus
Inability to glide humerual head downward caused by loss of...
infraspinatus, teres minor, subscapularis.
Inability to ER the humerus to avoid impingement caused by loss of...
infraspinatus and teres minor
General arm weakness w/ loss of cuff strength can cause:
Inferior s/l- initially held together by capsule and ligaments until they become stretched.
Lead person to position arm in protective position of IR stretching IT mm. Pecs, teres major and lats get tight.
Further stretching of cuff.
Initiation of GH movement w/ deltoid which causes impingement.
How do you measure inferior s/l?
1-3 finger measure of s/l
What becomes impinged w/ improper GH joint mechanics (roll up and glide up by delt)?
Supraspinatus tendon
Long head of biceps
Subacromial bursa
What position are the thorax and scapula in patients w/ anterior s/l?
same, but have been positioned in or prefer extension of the GH joint (elbow behind acromion).
Positioning in GH extension causes...
anterior sheer on anterior portion of GH joint. The proximal portion of humerus begins to s/l anteriorly.
Anterior s/l places pressure on what muscle?
Short head of biceps causing bicipital tendinitis.
Patients w/ stroke will often have lots of tone in biceps and be in what position, causing what condition?
flexion and supination w/ short head of biceps tendinitis
Superior s/l is common or rare?
rare
Superior s/l caused when:
patients have weakness in portions of cuff that glide humeral head downward (ITS).
Arm positioned on surface that's too high.
Continue to activate deltoid w/o initial abduction or downward glide.
In superior s/l, where does humeral head become lodged?
into the glenoid fossa continually
What happens when patients are positioned in forced WB w/o activation of scapular or rotator cuff mm?
Eventually, coracohumeral ligament can tear or become lax so the humerus becomes permanently lodged slightly superior and posterior to coracoid process of scapula.
If WB on involved arm, be sure...
Trunk mm are active to avoid superior s/l
Inferior GH ligament may become stretched or torn allowing...
greater movement of humerus superiorly.
Superior impingement leads to PAIN.
Patients w/ superior impingement usually require:
joint mobilization in order to obtain joint play in inferior direction followed by retraining ITS to cause downward glide w/ overhead elevation.
To minimize muscle weakness, the goal is:
work proximal to distal in every session. Don't wait for proximal control before addressing distal function. These two areas are controlled by different areas in the brain and both need stimulation.
What type of strength training should be used post-stroke?
progressive resistance strength training
How do you minimize faulty biomechanics to prevent ortho injury and pain?
Minimize muscle weakness. Taping, verbal/tactile cues
What type of activites should be used to increase power exerted by mm?
Functional activity that is meaningful and relevant.
Forced use of rolling walker significantly increases UE strength and functional outcomes.
When should neuromuscular stimulation be used in the UE?
For reduction of s/l and promotion of early muscle return.
What improves neural plasticity?
Peripheral sensory stimulation alone and paired w/ motor cortical stimulation.
Forcing patients to use unaffected side enhanced...
motor movement of involved side (crossed synapses), as well as forcing use of the scapula and shoulder to get better distal control.
If pain is a problem, can achieve pain relief through...
TENS
What tasks can be used to evaluate reach?
Observe during functional tasks.
Tasks that require different end hand positions such as pointing, grasping, swiping.
Tasks in the central and periphery and require contralateral/ipsilateral reach
Bilateral/unilateral reach
High and low accuracy demands
Problems w/ reaching (transportation):
Delayed movement timing for stable and moving objects.
Disruptions in interjoint coordination (shoulder, elbow, wrist, finger).
Either undrshooting (too slow) or overshooting (too fast) the object.
Abnormal motor activation (using biceps instead of triceps).
Sensory issues affecting reach
Intervention for reaching (transportation phase)
Very fast/slow tasks.
Work on accuracy
Practice grasp they think they need before they reach.
Things may be more/less difficult based on height, shape, weight, etc.
Work on functional tasks that force patients to alter tasks, heights reached, shape hand needs to make, and distance.
Ask patients to reach in ipsilateral, midline, and contralateral directions.
Problems w/ reaching (hand shaping):
Absence of anticipatory hand shaping
Inappropriate closing to late or too soon
Inability to alter hand shape
Larger or smaller pre-grip formation
Inaccurate recognition of object and it's intended use
Hand shaping is highly driven by:
sensory and visual input
Questions to ask about hand shaping to plan ahead before trying the task:
What is the object's size, shape, or weight, and how should i use it?
What type of grip is needed for lifting, throwing, or carrying this object?
Remember to open hand prior to reaching object.
Grip assessment-
Functional observation gripping objects of different size, weight, outside friction.
Standardized testing (Sollerman's Grips). Toothpaste tube, glass, knife, etc.
In grip assessment, ask yourself:
Does grip vary according to size, weight, shape of object?
Can they show anticipatory control of grip or adapt accordingly?
Are they using their visual systems to guide grip?
Set up therapy to work on the piece they're missing most.
Problems seen in grip phase:
Take longer time to contact object before lifting it (sensory issue).
May not be able to adjust force or amplitude. Typical to overcompensate if task is possible.
Lack the variety of grasps needed for function.
Greater visual issues, more impaired grip
Interventions for grip phase:
Practice: gripping objects of different size, shape, weight, use, outside friction
Grip stationary and moving objects
Power grip first, then precision.
Practice occurs within context of functional and meaningful activity.
Assessments for manipulation phase:
Stabilization- can patient perform isometric finger forces sufficient to hold object in hand during transport?
Manipulation- Can patient control movement of object through space?
Can patient release an object when and where desired? Is pattern for release abnormal?
Can patient use tools in the manner intended?
Standardized assessments for manipulation phase:
Purdue Pegboard, Minnesota Rate of Manipulation, Peabody fine motor scales, Bruinicks-Oseretsky Motor Developmen Scales
Problems w/ manipulation:
in-hand manipulation problems
Slower release or inability to release.
Intervention for manipulation:
Practice of: In-hand manipulation activities graded in size, shape.
Release on supported (holding object in other hand), then unsupported surfaces, into a container, and stacking.
Positive symptoms:
Exaggerations or excess of movement: spasticity, spasms, abnormal tone, Babinski
Negative symptoms:
Deficits or losses of movement: weakness, loss of fine/gross motor coordination, poor muscle endurance
Does decreasing positive symptoms increase function?
No
In reference to PS and NS, what is evidence-based?
Prevent loss of mechanical length of muscle (splinting, ROM)
Strengthen, through activity and exercise despite quality of tone..
Address loss of coordination through real occupational performance.
When should pain be treated?
immediately. may be orthopedic, neurologic, but usually ortho b/c malalignment.
Minimize ROM restrictions by:
Increasing capsule extensibility (joint mob, modalities, splinting)
Maximize mm resting length (manual therapy, modalities, splinting/casting)
Minimize edema
Minimize tone
Minimize pain by:
TENS (transcutaneous electrical N stimulation). Sensory impulses into SC to decrease sensory input from pain.
Resolve any ortho issues.
Assess neural tension and treat as needed.
Teach patients to be responsible for protection, maintenance, and improvement of the arm by:
Make sure arm doesn't fall off wheelchair.
Check temperature of objects before touching them.
Follow splint schedules.
Complete exercise and functional programs.
Make a consistent effort.
Train how to handle the arm...
During transfers, ADLs, gait, home management and leisure activities.
Shoulder- hand syndrome significantly reduced by not pulling the extremity or causing pain through poor positioning.
Causes of edema:
Lack of muscle contraction acting as a vascular pump
Entrapment/impingement due to postural change after stroke.
Sympathetic N response to hemiplegia (RSD)
Blood clot/DVT
To alleviate edema:
Sleep or rest w/ arm in at least 30 degrees of elevation.
Use compression wraps to control edema.
User splints when needed.
Use activity and exercise.
Modalities- heat, cryotherapy, ESTIM to m pump out edema, contrast baths.
Retrograde massage done gently.
Intervene w/ tone if:
Tone limits PROM, putting client at risk to lose valuable m length needed for strengthening.
It's compromising skin integrity or causing pain
3. It limits functional mobility or activity
Modified Ashworth Scale
0 = No increase in muscle tone
1 = Slight increase in muscle tone, manifested by a catch and release or by minimal resistance at the end range of motion when the part is moved in flexion or extension/abduction or adduction, etc.
1+ = Slight increase in muscle tone, manifested by a catch,followed by minimal resistance throughout the remainder (less than half) of the ROM
2 = More marked increase in muscle tone through most of the ROM, but the affected part is easily moved
3 = Considerable increase in muscle tone, passive movement is difficult
4 = Affected part is rigid in flexion or extension (abduction or adduction, etc.)
Is sensory retraining clinically effective?
Yes. Gains can be made w/ clients that are even 2 or more years post stroke w/ intensive training 45min/3x/week for 6 weeks.
Discriminatory sensory re-education:
Incorporate sensory requirements for all tasks (Ex: pick up the corduroy shirt and the cotton pants)
Protective sensory re-education:
Educate client in how to protect the limb from stimuli that the patient cannot safely detect.
How do you maximize fine motor coordination?
More sensation. Fine motor coofdination is often sensory based. Provide sensory intervention when coordination is involved. Intervention should be task specific.
Key components of fine motor coordination:
This includes isolated finger control, thumb opposition, stability of the wrist and thumb, maintaining hand arches, providing sensory feedback, demanding in-hand manipulation
Motor learning through:
CIMT, NDT, PNF
Intervention map to retrain sensation/coordination:
No use of arm.
Can provide minimal stabilizing assist w/ involved arm.
Minimal active movement- usually some proximal strength,but no hand function.
Can do lots of active assistance during functional activities w/ involved arm- probably has gross grip, but perhaps w/ no fine motor control
Patient uses both arms and hands- although somewhat hesitantly, has some fine motor control, may need reminders to use both arms and hands.
UE function is facilitated by attention to all aspects of motor control:
sensory
Visual/visual perception
Cognition
Strength
Coordination
w/in the context of meaningful activity through conscious practice techniques.
Shoulder hand syndrome-
AKA complex regional pain syndrome or reflex sympathetic dystrophy.
Can have it in any diagnosis
Caused by sympathetic NS overflow.
Causes hypersensitivity to pain and of mechano-receptors. Lack of active/passive ROM and loss of ability to stand WB
Stage 1 SHS
Diffuse aching in shoulder arm and hand
Swollen tender hand and wrist
Shiny dry skin
Increase in hair and nail growth
Passive ROM to hand and wrist causes sharp and severe pain.
Treatment for stage 1 SHS:
Treat cause of pain if possible.
Elevate hand and arm to decrease swelling.
maintain ROM as possible.
Check body alignment, biomechanics, hand and arm care
Touching, rubbing, massage
TENS for pain
Slow, gentle increases in WB
Stage 2 SHS:
Marked decrease in ROM
Pain is severe and diffuse
Hair is scant, nails become brittle and rack
Skin gets more shiny, cold, flaky, and swollen
Intervention for stage 2:
Joint mob as needed
TENS
CT mobilization
Gradual, but consistent increase in WB
Stage 3 SHS:
Severe tissue deformity
Joint contractures
Out of realm of PT/OT
Irreversible
What happens after stroke (LE)?
Weakness
Spasticity
Coordination problems
Sensory problems
Cognitive and perceptual problems
Function
After stroke, weakness is a result of...
Insufficient recruitment of motor neurons from the cortical and subcortical areas.
Later weakness result of secondary changes in the mm fibers making the muscle unable to produce sufficient force.
Why is weakness important?
Weakness causes an inability for patients to generate muscle force for concentric, eccentric, and isometric activity during functional activities making compensation or adaptation necessary.
What is active during the sit to stand movement??
Hip extensors, knee extensors, and PFs are active concentrically.
Stand to sit the same mm are active eccentrically
What LE mm are especially susceptible to weakness?
PF and DF display weakness due to under recruitment and lack of sufficient strength following stroke and rarely come back.
Quads
Hip flexors, extensors, and abductors
PFs produce __% of forward propulsion during gait.
85
Dorsiflexor weakness leads to what during gait?
foot drop
Quads are important for...
Loading and stance during walking and for standing control and balance.
Quad weakness compensation:
usually knee hyperextension/forward trunk lean moving the line of gravity forward of knee eliminating need for quad activity.
What is wrong with knee hyperextension?
can damage structures in knee including ligaments, especially the ACL.
Why are the hip flexors important?
Allow person to move foot forward for walking, for balance, and for weight shifts.
What may occur w/ hip flexor weakness?
Knee flexion may be affected, especially if PFs are also weak.
Toe drag can result causing loss of balance.
Hip flexors almost always come back.
How may people compensate for hip flexor weakness?
Using a posterior pelvic tilt along w/ activation of the abs to move foot forward.
May use hip circumduction (hip hike, forward pelvic rotation, and abduction of hip) to move foot forward.
When are hip extensors important?
standing and ADLs, ability to balance in standing
What compensations may not be used with hip extensor weakness?
Can't use backward trunk lean b/c of inadequacy of DF and quads.
Patients using forward trunk lean will have poor stability and accompanying knee hyperextension.
Backward trunk lean eliminates need for ___ mm in standing and walking, but imposes greater demand on...
hip extensors; greater demand on knee extensors and tibialis anterior which are often weak after stroke.
Hip abductors (glut med and TFL) are important for:
standing and ADLs
When hip abductors are weak, pelvis on __ side drops during one-legged stance.
strong
How do patients compensate for hip abductor weakness?
avoid WB on weak side
Stance on weak leg, patients may use trunk lean toward weak side to compensate.
Why do patients w/ weak hip abductors lean towards the weak side?
Leaning laterally lessens the load on the hip abducturs or eliminates the need altogether.
After stroke, spasticity is a result of:
Lack of inhibition of mm tone and activity by the CNS.
Over production of muscle activity or activity that doesn't match the task at hand.
In patients w/ stroke spasticity often results when:
a quick stretch during transfers, ADLs, or gait.
Spasticity can also alter...
the mechanical properties of the muscle making it unable to react w/ the speed required of the task.
Muscles especially susceptible to spasticity in the LE:
PFs and quads
When patients shift their weight forward or step forward, the __ mm become stretched producing spasticity.
PFs
PF spasticity during weight shift forward or step forward causes:
the tibia to be pulled posteriorly causing knee hyperextension
Spasticity in PFs causes:
toe to land first when stepping forward. Also supinate leading to ankle instability.
Possible solutions to PF tone:
supporting the foot in subtalar neutral through: AFO, foot orthotic, casting or spinting to lengthen muscle
Spasticity in quads can lead to...
knee hyperextension occuring when quads undergo a lengthening.
This is rare, but spasticity can occur during loading when knee is lengthened to absorb shock.
when are coordination problems noted?
When one looks at multisegmented movements.
One coordination problem seen after stroke is...
abnormally high levels of co-activation in agonists and antagonists.
Abnormal levels of co-activation may be due to:
Need for patients to increase stability.
Altered central pattern generators (motor programs).
Increase in postural support- although altered
What are the 2 patterns of abnormal synergies typically apparent after stroke?
Total extension and total flexion
Flexion synergies (LE)
As individuals flex legs after stroke, they experience difficulty isolating flexion at one joint and often use a mass pattern consisting of: PPT, pelvic forward rotation, hip flexion/IR/abd, knee flexion, ankle DF, supination, toe flexion
Extension synergies (LE)
After stroke have difficulty isolating extension at one joint using pattern consisting of: APT, pelvic backward rotation, hip extension/ER/add, knee extension, ankle PF, STJ supination, and toe flexion
Effects of moving in synergy patterns:
slow gait speed, affects ADLs, endangers leg joints. Cost from energy expenditure 2-3x increased.
As people recover from stroke, do they become better able to isolate joints and muscles?
yes
Sensory problems in the leg can...
disrupt function during gait, standing, and ADLs
Most common sensory problems include:
somatosensory deficits, visual, and vestibular deficits
B/c 3 sensory systems are basis of balance, patients w/ sensory difficulty...
will have balance deficits and be at risk for falls.
Somatosensation impairments occur due to:
Impairment of afferent impulses, usually at the cortical level.
Can occur as result of altered sensory input or absent sensory input.
Over time, the sensory component of ___ also becomes altered, affecting...
peripheral NN; conduction of nervous impulses
Normally, stretch reflexes are modulated in the triceps surae and lead to improved pushoff and stance recognition. These reflexes are inhibited prior to...
swing to allow toe clearance.
Any disruption of triceps surae stretch reflexes can alter...
either the stance and swing phases of gait, or affect the minute balance adjustments we make as we stand in one place.
If one sensory system used for balance is affected, the other 2 systems...
become hypersensitive thus taking over for the altered system.
In stroke, all 3 systems may become altered or invovled require extensive retraining of balance.
Cognitive and perceptual problems related to stroke:
Body scheme/image
Spatial relation disorders
Pain
Cognitive impairments
Attention
How should patients practice so that they understand how to activate the muscles that perform anterior/posterior pelvic tilt?
Practicing while seated allows patients to understand a neutral spine and how to move into and out of it.
PEAK
Pelvis in neutral
Equal weight on both buttocks
Angles (90)
Knees facing forward
After attaining anterior/posterior stability, patients need to understand how to...
activate mm that allow them to shift their weight from side to side.
How should seated weight shifting be practiced?
seated allowing understanding of how to reach laterally and weight shift laterally and to move to involved and uninvolved side. Next move to spinal rotation.
When seated and reaching to right, person activates...
lateral trunk flexors on L, pelvic elevators on L, and hip abductors on R
The hip joint needs a balance between...
flexion and extension. Practice in seating allows patients to gain stability and confidence that they won't fall forward or backward.
After the initial movement to overcome gravity, leaning forward in sitting uses (in addition to trunk extension discussed previously):
hip extensors ECCENTRICALLY. Moving back to upright uses the same muscles concentrically.
Practicing leaning forward at the hips in seated position purpose:
eliminate fear associated w/ forward falling and allows patients to practice control prior to moving to stand.
Proper foot position in seated:
STJ neutral and ankle joint neutral. May require under the foot orthosis or AFO
An ankle that collapses into DF causes...
knee instability (flexion) and leads to a fall or the person purposefully hyperextending knee for stability.S
Sit to stand action requires concentric:
trunk extension
Hip extension
Knee extension
Ankle PF
Stand to sit action requires:
same acctions of muscles as sit to stand, but eccentrically
Sit to stand action requires what position?
Ankle be in DF
Entire foot contacting floor
Knees come forward over feet
Shoulders come forward over feet
Does subluxation itself cause pain?
No, but sl clearly puts mm, tendons, and ligament systems at a biomechanical disadvantage and can contribute to ortho and neuro injuries.
What does cause shoulder pain?
Spasticity of IRs, specifically subscap and pec major.
Significant pain w/ stretching to prevent shortening.
Limited ROM can result in contractures and frozen shoulder.
Multi-factorial requiring individualized assessment and intervention.
Is a subluxation reversible and does it affect rehab outcome?
No literature to support whether or not s/l inhibit m return or potential (major lit void).
We appear to have more impact acutely, but cannot tie this to better outcomes functionally.
Do humeral supports give us a mechanical advantage in rehab?
Lack of refuting and supporting evidence:
Proper alignment of static and dynamic structures.
Increase potential for using key kinesiology principles.
Pain prevention.
How do we accurately measure inferior s/l?
Radiographs are most objective, but costly.
Palpation by finger width had 2nd highest correlation with accuracy.
Assess arm length discrepancy.
Clinical observation.
If we choose to use a support, we should evaluate:
Application of force and how that impacts the shoulder girdle and s/l.
How teh support moves (or doesn't) w/ the patient as they access environment.
The necessity for reducing the s/l vs the negative impact of the abnormal tone, abnormal posturing of the UE.
Comfort, cosmesis, and control of pain.
Impact on function.
Humeral supports shouldn't be used universally w/ all clients, but considered for each.
Used early as a preventive measure- think ortho.
Horizontal and vertical measurements.
Positioning devices as humeral support: laptray, arm rests, foam cushions, pillows. Pros:
Low tech/inexpensive
Horizontal measurement
Easy to apply and teach to client
Can be quickly applied in sitting or laying.
Using positioning devices as humeral supports: Cons:
Don't move w/ your body; fall w/ movement.
Tendency for over/undercorrection in inferior subluxations.
Can put arm in mechanically disadvantaged positions if used incorrectly and as person moves.
Slings as humeral support:
No slings currently correct trunk imbalances or have significant impact on scapular alignment. Simply work to increase the vertical rise of the humerus toward teh gleinoid so only addresses one reason for s/l.
AJOT Chart-
Gives us a way to evaluate a sling on an individual.
Looks at desirable and undesirable characteristics: force, impact on tone, access to environment, and cosmesis/acceptability
Bobath sling-
Allows arm to rest at side of body/use of arm functionally.
Provides support through axilla to minimize vertical displacement.
Straps that support axilla against thorax.
Debate: horizontal displacement, circulation compromise
Bobath sling evidence:
Does decrease vertical asymmetry, but there was horizontal asymmetry.
Force application is through the axilla, not an upward vertical displacement of humerus. Edema possible.
Do not use for moderate s/l (2-3fingers), only w/ minimal s/l and some muscle tone support.
Harris hemi-sling:
Intends to provide upward vertical support to minimize inferior s/l.
Displaces weight of arm over both shoulders for improved symmetry.
Places arm in add/IR
Minimizes arm swing and use in functional acitivity.
Harris hemi-sling evidence:
Good correction of s/l significantly better than bobath, w/ no horizontal displacement.
Significant reduction in vertical asymmetry when placed correctly.
Single-strap (conventional) hemi-sling:
Intends to provide upward vertical support to minimize internal s/l.
single strap over opposite shoulder.
Single strap hemi-sling evidence:
Correction in vertical asymmetry, but other supports do better.
Roylan humeral cuff sling:
Intends to pull humerus vertically w/ force enveloping humerus and pulling superiorly.
Force transmitted to opposite trunk.
Roylan evidence:
Significant reduction in vertical asymmetry w/ no increase in horizontal asymmetry as compared to bobath and signle strap hemi-sling.
Bottom line on using and choosing slings:
Use as a preventative measure when the extremity is flaccid.
Weigh advantages of minimizing s/l w/ possible advantages/disadvantages of position, function, circulation, tone changes, pain relief, and gait changes each time you see the patient.
What type of e-stim is used as humeral support?
neuromuscular stimulation (NMES)
In clients w/ neuro disorders, we can use e-stim to:
Prevent or retard mm atrophy.
Muscle re-education: Teach patient to activate their own mm; use w/ functional tasks
NMES contraindications/precautions:
Cardiac pacemakers
Avoid anterior neck and head
Active cancer
Abnormal sensation
Pregnancy
For inferior s/l, electrodes should be placed:
Over supraspinatus and posterior delt.
Add UT and LT as alternative
Or supra, infra, and UT/LT
To decrease s/l, e-stim should be on/off:
On no more than 10 sec to avoid fatigue.
Off at least 50 sec moving to 30 sec as muscles strengthen.
ON:OFF ratio 1:5 to avoid fatigue
To use e-stim as orthotic aid while decreasing s/l, on/off:
Increased from 1:5 ratio to 1:1
Wearing time increased to 6 hours a day
Use 4-6 weeks
Reasons for using NMES:
See increases in motor recruitment (stronger, faster contractions).
Should see improvements w/in 2 weeks
Should combine voluntary conscious effort w/ stim.
Recovery rate is faster , but in the end similar outcome to those w/o NMES.
Shoulder taping as humeral suppport effects:
Theory is that effects are proprioceptive in mechanical in nature: Extra sensory feedback
Reminder to maintain proper positioning
Encourages proper positioning and handling techniques
Placebo effect
goals of taping:
Inhibition of overactive mm synergies.
Facilitation of underactive synergies.
Optimization of joint alignment
Offloading of irritable neural tissue; direct or indirect pain relief.
Intervention to prevent and treat s/l:
Proper positioning into maximal ER.
Slings are the best method to support a flaccid extremity, but no one sling is better than another.
Aromatherapy and accupressure reduce pain.
Use an actve therapy approach, but avoid over aggressive therapy including use of overhead pulleys.
Sensory>___>cognition>___
perception; behavior
The sense organs...
receive info
Information is transmitted..
to the brain. The brain processes the info into perceptions
cognition-
How perceptions are used for immediate action or stored for future actions ending in behavioral response.
Vision accounts for __% of all sensory receptors, but we must recognize the dynamical relationship between all the senses.
70
Perception-
interpretation of sensory stimuli
Visual-receptive components-
The anterior visual pathway.
Lesions occuring where affect visual reception?
Anywhere from the retina, optic N, optic chiasm to the lateral geniculate of the thalamus.
Lesions of receptive components affect:
Sensory or motor based primary skills.
Ability to receive, detect, orient, and locate.
Acuity, field, oculomotor control, accomodation, fixation, tracking saccades, steropsis, binocular fusion (see one thing w/ 2 eyes), pursuit and scanning.
Visual-cognitive components include-
Posterior visual pathway.
Lesions may occur anywhere from the thalamus to the primary visual cortex in the occipital lobe, to the parietal, temporal, and frontal lobes.
Visual- perception or visual-cognitive components include things such as:
Visual attention and memory
Recognition of form, color, and spatial relations (depth perception, figure ground, etc.)
Describe the path of sight from the eyes to perceptive areas of the brain.
Eyes are sensory receptors.
Transmit info via optic N through visual paths to visual cortex in occipital lobe.
Info then goes through thalamus to associative areas of temporal, parietal, and frontal lobes.
What are the foundations of visual perception:
Visual acuity, visual field and oculomotor control.
After the foundations for visual perception, the next skills that develop in the hierarchy of visual perception are:
Visual attention, scanning, and pattern recognition
The final parts of visual perception that develop are:
Visual memory and visuocognition develop and allow us to adapt through use of our vision.
An acquired assault to the brain can result in visual perceptual deficits due to...
Visual field deficits, difficulty attending and scanning the environment.
A visual field cut can occur w/ lesions...
to either side of the brain in either the temporal field or nasal field and upper and lower quadrants.
Ex: can have a lower nasal visual field cut on the L side as a result of R brain damage.
Can people w/ visual field deficits have inattention?
Can have some inattention depending on severity, but can quickly learn to compensate.
Hemianopia-
loss of vision in one half (temporal or nasal) in one eye.
Homonymous hemianopia
Loss of field (R or L) that's the same in both eyes.
Bilateral hemianopia-
Loss of the same half of the vision in both eyes.
Homonymous hemianopia-
los of nasal field in one eye and temporal field in the other resulting in loss of an entire visual field
How is loss of visual field different than visual spatial neglect?
An individual w/ a field cut will be aware and can compensate after initial training and minimal cues. Person w/ neglect has difficulty compensating no matter how many cues.
What lobe lesions often cause visual spatial neglect?
often inferior parietal lobe on the R
Hemineglect-
The impaired or lost ability to react to or process sensory stimuli presented in the hemispace contralateral to a lesion of the human R (or L) cerebral hemisphere.
Hemineglect is often accompanied by losses in:
Visual field
Body awareness
Hemiparesis
Somatosensation
Spatial awareness
Somatagnosia-
inability to recognize body parts
Anosognia-
Denial or lack of awareness of paralysis; particularly hemiparetic arm
R/L discrimination issues:
difficulty determining L from R or discriminating L versus R side of body.
Unilateral body neglect-
Failure to orient to stimulus to involved side.
Spatial relationships-
Relationship of space between objects and space between self and objects.
Spatial relationships include:
Depth perception
Figure ground
Position in space
Form constancy
Topographical orientation
Spatial attention
Figure ground-
differentiating foreground from background
Position in space-
Are objects above or below, inside infront, etc.
Form constancy-
Objects are recognized as the same despite size, location, or position.
Topographical orientation-
Knowing ones location in a larger space
Spatial attention-
Lack of attention to stimulus in the visual environment is unilateral spatial neglect
Characteristics of hemineglect:
Asymmetry of attention and shift away from L events in favor of R.
Rightward shift of the frame of reference w/ respect to self head turned R.
Distortion of mental representation in space. Describe a room will only describe things on the R side of it.
Contralesional hemianesthesia (impaired position and pain sense).
Deviation of body posture in stance.
Contralesional gaze avoidance. Often don't make eye contact.
Visual-spatial disorders and vidual sensory deficit.
___% of people w/ R hemisphere lesions have unilateral neglect syndrome.
20-58%
Seven days after brain insult, some sign of contralesional hemineglect is seen in __% of patients w/ R hemisphere lesion.
50
Contralesional neglect is more frequent, severe, and permanent in which hemisphere?
R
R hemisphere damage may result in:
Decreased arousal and attention due to decreased dopamine and there may be more dopamine receptors in the R hemisphere.
Difficulty shifting attention b/c R hemisphere has the dominant mechanisms necessary to shift attention.
Deficits in the internal spatial representation of the contralesional side of space resulting in a rightward error in the bodies spatial orientation.
Unilateral neglect syndrome w/ L hemisphere:
Detail oriented
Compares and contrasts details in environment
Processes info sequentially
Attends only to R visual field.
Unilateral neglect syndrome and R hemisphere:
Global orientation
Perceives the environment as a whole
Groups multiple objects into meaningful categories
Attends globally to both L and R visual fields
Cognitive deficits are most associated w/ what lobe?
frontal
Cognitive impairments may be caused by...
Frontal lobe lesions or Problems w/ perception from lesions elsewhere.
Executive functions:
Problem solving/sequencing problem recognition, judgment, and planning, organization initiation, etc. are indicative of the individuals ability to employ new strategies to old tasks and be safe and independent.
Test of basic cognitive impairments:
Orientation, attention, short term memory, and following verbal commands are often used predictively as precursors for executive functionsa nd for determining d/c environemtn
In determining what assessment to use, consider:
Can the person participate in the assessment? How much time will it take
Is the assessment relevant for the person?
What additional info do I want to know about th eperson?

Does the assessment cover the areas of cognition and perception that I want?
Is the assessment in line w/ the model guiding my intervention (remidal or adaptive)?
Do I need a sensitive assessment that can measure small changes in performance?
Do I need an assessment that measures change over time for outcomes?
Am I qualified to perform assessment?
Benefits of assessments of cognition and perception:
More easily recognized by other team members.
Frequenthly more significant research
Limitations of assessments of cognition and perception:
Relationship to function or occupation may not be apparent
Trail making test part b:
Starting w/ number 1 draw a continuous line alternating between letters and numbers until you finish w/ number 13. If can't do in less than 3 minutes, it suggests the person shouldn't drive.
The Scan Chart Test:
Based on Brain Injury Visual assessment batter for adults. Scan chart and ID shapes. Should do this: rectilinear (left to right/top to bottom), clockwise or counterclockwise. Get a plus score for using an organizational strategy.
Motor Free Visual Perception test (MVPT)
Which shape would look like the initial shape by finishing drawing the shape.
Letter cancellation task-
used to screen if person has neglect. Tell person to cancel all letter A's and see which ones they miss.
Line bisection-
put line through center of each line you see. Used to confirm neglect.
Intervention for perception and cognition (types):
Restorative/remedial
Adaptive/compenssatory
Combined approaches: metacognitive & metaperceptual, environmental approaches, task oriented approach
Restorative interventions for perceptual deficits:
Computer programs: Hierarchical Cognitive retraining programs, Useful field of view/visual attention
Drill and practice
Table-top activities
Hierarchical Cognitive Retraining Programs-
Contain multiple cognitive and perceptual aspects frequently including topographical orientation- maze activities
Useful field of view/visual attention for perceptual deficit intervention:
Central stimulus presented at teh same time that person must discriminate a peripheral stimulus against a cluttered background.
Drill and practice interventions for perceptual deficits:
Particularly designed for remediation of visual spatial neglect.
Saccades- quckly look from one object to another.
Visual search and scan
Pen and paper exercises- trail making, letter/number cancellation, line bisection, hidden pictures
Do they translate to function?
Table-top activities for intervention of perceptual deficits:
Constructional praxis- DLM 3 D block designs, parquetry
Body scheme- puzzles (of a person), DLM- L and R hand cards
Evidence based intervention for neglect:
Contralateral limb activation
CIMT
Mental imagery
Prism glasses
Eyepatching and hemispatial glasses- blocking the good field to cause them to address the bad
Caloric stim- ice water and irrigate the ear canal and do line bisection ebfore and after.
Optokinetic stim- screen in front of person and there are moving dots causing them to pursue toward L field.
Neck vibration
Trunk rotaiton
Rapid eye scanning movement in both fields increased...
awareness of the visual deficit and its effect on function
Restorative intervention for cognitive deficits:
Computer assisted strategies- attention, memory, and executive skills.
Drill and practice- number of repetition, remembering words
Pen and paper- odd, even cross out
Table top task- multivariate sequencing beads
Limitation of restorative/remedial intervention for perceptual/cognitive deficits:
We assume if the person improves in deficit area generalization of learning or transfer of training to functional tasks will occur.
Effectiveness of restoration intervention of cognition:
No significant affect on performance of fun ctional tasks
Insufficient evidence
Success in remeidal and adaptive approaches contingent on:
person's ability to learn
Functional Model of Cognitive Rehab-
Both restorative and compensatory approaches across teh continuum and settings.
It's possible to use ADLs as an intervention strategy w/in the restorative approach.
Could use context of ADLs to address cognitive or perceptual deficits.
Task oriented approach to cognitive/perceptual rehab:
Emphasize the relationship of the task to the person w/in an environment.
Focuses on metacognition and metaperception.
Involves patient in problem solving process.
Task oriented interventions include:
Activity processing- discuss purpose and results of the activity w/ patient
Behavior modification- use of prompts and cues to shape and reinforce to support interdependence
Group treatment- feedback, shared experiences
Multicontextual approach- uses patients' ability to process and self monitor for the transfer of skills
Affolter approach- use tactile and kinesthetic (hand over hand) input to create the connection between movement and its affect on objects.
Keep intervention simple:
Avoid frustration
Use multiple cues
Decrease environemtnal stimuli
Slow down
Provide basic instructions
Use goal-directed activities in context of normal enviroment.
Frequent practice
Motor learning based in learning theory
Environmental/adaptive approach:
Structuring the enviornment to improve function and guarentee safety.
Actually setting up environment to prevent failure
Reduce environmental distractions
Use appropriate environment for the activity to enhance performance
Person may not recognize or have the need to know about the intervention.
Family/caregiver must understand the need for the intervention and be involved in implementation
Therapist must have time to develop the intervention and access to family/caregiver for education
Adjusting and simplifying the environment to match reduced competency:
Appliances w/ auto turn off or plugged in to timers so that the only way the appliance can be turned on is by setting the timer.
Pictures to cover exterior doors to prevent wandering outside.
Outdoor wandering parks
Laying out clothes in correct order to be put on
Use of assistive devices for self-care that don't require new learning and improve safte.
How do we measure outcomes?
Use of appropriate standardized assessments to measure improvements
At end of services if goals and objectives are met
Specifically ask and document if person/family feel they've improved (COPM)
Evaluate and document if specific intervention strategies have generalized/transferred to other activities.
For single-leg stance in frontal plane, where does ground reaction force normally fall?
Lateral to STJ
Medial to knee joint
Medial to hip joint
For single leg stance in frontal plane, what moments are produced?
Pronation at STJ
Varus moment at the knee
Adduction moment at hip (countered by glut med)
Adduction moment at the hip in single limb stance...
forces the body to respond w/ an eccentric contraction of glut med. Conserves energy by not allowing pelvic drop.
Compensations for weak glut med post-stroke:
Lateral trunk lean in loading and midstance.
Failure to compensate
Lateral trunk lean during loading/midstance:
Moves ground reaction force laterally from point of application at foot. B/c vector then passes closer to hip's AP axis, its moment arm is shorter and producess a smaller hip adductor moment.
Will lean toward ___ side b/c it brings GRFV closer to hip eliminating need for glut med.
weak
Failure to compensate for glut med weakness:
Seen as a pelvic drop on the strong side b/c the weaker limb can't stabilize w/ glut med/TFL in frontal plane (glut med limp).
Failure to compensate makes swing through on the strong leg more difficult b/c...
the patient tends to hit his/her toe on the floor.
When can the failure to compensate for glut med weakness problem occur during gait?
Anywhere from loading through terminal stance when glut med is active
Glut med remediation therapeutic interventions:
OC: hip abduction in supine progressing to s/l; hip abduction in standing w/ and w/o theraband.
CC: Hip hiking on involved and uninvolved leg,
Slowly lowering and raising strong pelvis while WB on involved leg.
Move on to gait- sidestepping and braiding. Progress doing these activities w/ resistance by theraband or tubing.
Glut med immediate compensations- assistive devices:
Add a cane on the strong side immediately decreases force demands on glut med moving GRFV laterally.
Move from LBQC (large base quad cane) to SBQC to a single point cane. Most people cannot manage walkers after stroke as one arm is weak, but this is also a possibility.
Subtle lack of hip extension (forward trunk lean slight) causes...
knee hyperextension
During loading, GRF falls:
Posterior to ankle
Posterior to knee
Anterior to hip (slightly)
During loading, GRF causes what moments:
PF moment at ankle
Flexion moment at knee
Flexion moment at hip
Loading response forces the body to do what at the hip?
Forces body to respond w/ isometric activity in hip extensors
In midstance, GRF falls (sagittal):
Anterior to ankle
Anterior to knee
Posterior to hip
GRF at midstance causes:
Dorsiflexor moment at ankle
Extensor moment at knee
Extensor moment at hip
Midstance moments force body to...
Respond w/ eccentric activity in hip flexors.
Compensations post-stroke due to glut max/HS weakness:
Backward lean at loading response (rare).
Forward lean at loading response.
Backward lean at loading response:
Leaning backward inclines GRFV posteriorly passing closer to hip's lateral axis making its moment arm shorter producing a smaller hip flexion moment.
What does backward lean do to the knee?
Increases demand on quads which are also weak after stroke... more often see forward trunk lean.
Forward lean carries through what portions of gait:
At loading and through a larger portion of stance phase
Is forward lean a stable or unstable position? Why?
Unstable position b/c the hip is open and isn't stabilized by any ligaments.
When patients assume forward lean during gait, GRFV usually passes:
In front of knee joint causing hyperextension of knee during loading.
OC therapeutic interventions for glut max remediation:
Work on hip extension in s/l progressing to prone if patient is able.
Bridging
Standing w/ and w/o theraband
CC therapeutic interventions for glut max remediation:
Hip extension on involved and uninvolved leg in standing
Move to gait- forward and backward walking keeping hip stable. Progress to resistance w/ theraband.
Squat until one inch above chair. Lean anterior for gluts.
Wall slides
Up and down a step
Sit to and from stand
Transfer activities
Assistive devices for glut max compensation:
Cane on strong side to decrease force demands on glut max and allow patient to avoid forward/backward lean by transferring some weight onto cane.
Moments in the sagittal plane during loading:
PF moment at ankle
Flexion mement at knee,
Flexion moment at hip
Flexion moment at knee during loading forces body to...
respond w/ eccentric activity in the knee extensors
Sagittal plane moments in midstance:
DF moment at ankle
Extensor moment at knee
Extensor moment at hip
Extensor moment at knee during midstance forces the body to...
respond w/ passive force which develops in posterior knee structuers as they elongate during knee extension; knee muscle activity is unnecessary
Compensations for quad weakness:
Forward trunk lean
Hyperextension of knee w/o forward trunk lean
Avoiding heel strike
Use of forward trunk lean in patients w/ quad weakness:
Hyperextend knee through loading to midstance to provide stability.
Forward lean moves GRF anterior to knee.
Difficult to differentiate if forward lean is due to quad or glut max weakness, or both.
Hyperextension w/o forward trunk lean:
Allows for stability of weak knee from loading to midstance.
Can be hard on knee joint providing stress to ACL esp if knee "jerks" back into hyperextension.
4 most common causes for knee hyperextension:
Poor proprioception
Glut max weakness
Quad weakness
PF tone or contracture
Avoiding heel strike:
Contacting ground initially on a flat foot, moves GRFV anteriorly.
Anteriorly placed vector is closer to knee joint through loading and produces a smaller knee flexor moment.
Then produces a knee extensor moment- compensate for knee extensor weakness.
Quad remediation- OC strengthening:
Knee extension in s/l progres to supine or sitting.
Work on bridging activities combining hip extension w/ knee extension.
Work on knee extension in sitting= increase resistance
Quad remediation- CC strengthening:
Knee extension on involved and uninvolved in standing through shallow moving to deeper knee bends.
Move on to gait
Wall slides
Sit to and from stand
Transfer activities
Staires, curbs, and stepping up.
Quad compensation- assistive devices:
Cane on strong side will decrease force demands on quads and provide stability
Solid AFO in 5 degrees of DF changes GRFV to allow knee to have flexion moment instead of extension. If quads aren't strong enough to accept the load may become unstable.
If patient has problem stabilizing the knee in extension provide solid AFO in 5 degrees PF to allow knee to have a greater extension moment. May cause problems w/ a jerking hyperextension causing ACL stress.
PF moment at ankle during loading forces the body...
to respond w/ eccentric activity of ankle DF.
DF moment during midstance forces body to...
respond w/ eccentric activity in PFs
GRF in terminal stance falls (sagittal):
anterior to ankle
anterior to knee
posterior to hip
GRF in terminal stance causes what moments:
DF at ankle
Extensor at knee and hip
DF moment in terminal stance forces body to...
respond w/ activity in ankle PF. PF which have acted eccentrically through midstance, now act isometrically. Continued advancement of pelvis and lower extremity now move tibia anteriorly which causes heel to rise at 35-40 percent of gait cycle.
Preswing in sagittal plane GRF falls:
Anterior to ankle
Posterior to knee and hip
Moment in sagittal plane in preswing:
DF moment at ankle
Flexor moment at knee
Extensor moment at hip
DF moment in preswing forces body to...
respond w/ activity in ankle PF. PF activity becomes concentric as they develop the important "push off" force for propulsion
Compensations for weak PFs:
Lack of push-off
Overuse of hip flexors if available (pull-off)
Short step length w/ swing on stronger leg and subsequent landing on stronger leg.
Inadequate knee flexion in swing due to lack of push off.
Therapists who see a short step length should interpret it as...
decrease in stance time and stability on opposite limb.
When R step length is short, likely has weakness in muscles controlling ____ limb.
L
Gastroc/soleus remediation OC strengthening:
Not very useful, but consists of pointing toes or making foot circles
Gastroc soleus remediation cc strengthening:
Heel-off exercises on a level progressing to raised surface.
Move to gait w/o then w/ resistance
Walking forward and backward, up and down inclines.
E-stim to work on timing and force of contraction
Gastroc/soleus compenstion- assistive device:
Add cane on strong side to assist in improving swing on involved side.
Emphasize pull-off and strengthen hip flexors
If there's collapse of tibia (knee flexion/DF) from midstance through terminal stance and push off, provide solid AFO to assist in substituting for triceps surae function to allow heel rise
GRFV at ankle in loading forces body to respond w/
eccentric activity in ankle DF.
What is the activity at the ankle during swing phase?
Ankle dorsiflexors act concentrically to clear toe.
Compensations for tibialis anterior weakness:
Foot slap
Foot flat at initial contact
Foot slap:
During loading, GRF produces PF moment at ankle
When DF are inadequate, foot slaps audibly on walking surface
Foot flat at initial contact:
B/c anterior tib weakness, people may contact ground late and initially land on flat foot. Moves GRFV anteriorly potentially causing knee hyperextension
Anterior tib strengthening:
Toe raises w/ eversion
ankle circles
PNF patterns
Anterior tib compensations we provide:
E-stim
Hinged AFOs to allow foot to freely DF past neutral, but w/ a stop to prevent fot drop past 90 (or neutral) PF/DF
Canes may assist in stabilizing during swing phase on weaker foot.
All gait is made easier through the use of....
supported body weight systems.
In the EXCITE article, which CIMT group showed more improvement in time on the Wolfe Test?
The CIMT lower functioning group showed greater change, though scored worse than the higher functioning group.
What do people learn quickly after stroke?
Quickly learn how to do things w/ only one arm and leg (learned non-use).
Quickly learn to compensate for weakness.
Quickly learn to quit trying to use their involved extremities.
when does learned non-use occur?
During the initial period after brain injury.
The brain is in a period of recovery in which the client loses most voluntary or involuntary motor function.
What happens in learned non-use?
Patient learns to compensate w/ the stronger limbs and do functional activities w/ them.
When motor function begins to return, the person has learned not to use the involved limb through failed attempts.
During the period in which the patient learns non-use, potential motor recovery is limited by...
learned over reliance on the unaffected limb.
What is CIMT?
Constraining the use of the uninvolved (strong) UE for a period of approx 2 weeks.
Giving the involved arm increasing amounts of practice at a variety of functional motor tasks.
Behavioral training involves shaping or guiding use of the arm.
Also called forced-use
Shaping-
Psychology term used to describe "shaping" behavior by rewarding the patient or client w/ enthusiastic approval for improvement. Rewarded for using involved arm, but not punished for failure.
Taub's research on monkeys:
Severed sensory NN of limbs of monkeys. Restrained normal limb for two weeks. They learned to use their involved limb again.
EXCITE trial used individuals how far post-stroke?
3-9 months.
Requirements of UE function in EXCITE trial in order to use CIMT:
Ability to extend their MCP and IP joints of all digits at least 10 degrees and extend wrist at least 20 b/c they have some sort of functional hand use.
Second level- Less functioning; At least 10 degrees of active wrist extension, 10 degrees of thumb abduction/extension, and at least 10 degrees of extension in at least 2 additional digits. Ability to repeat 3 times in one minute.
Were patients w/ balance difficulty included in EXCITE? Why//why not?
No balance problems that might compromise their safety. If constrain uninvolved UE of someone with balance problems it prevents them for catching themself if they begin to fall and futher disturbs balance. Put in WC for CIMT if they have balance problems.
Why was it important to the EXCITE trial that participants scored at least 24 on Mini-mental status?
Need to be able to understand the purpose of the restraint.
What did CIMT consist of in the EXCITE study?
Individuals wore restraints and did six hours/day of shaping activities for an intensive 2 week period. Resume previous activities after trial.
Results of EXCITE trial:
Improvements in function as measured by Wolf Motor Function Test (WMFT) and MAL Quality of Movement Assessment.
Decrease in disability in SIS.
Retention at 12 months post intervention./
CIMT supported by evidence:
Neuroplasticity and cortical reorganization are supported by MRI/PET scans.
Ipsilateral association areas and contralateral motor cortex areas (hemispheric shift) compensate for loss of function.
Potential side effects of CIMT:
Uninvolved arm stiffness, cramping, and numbness. May have overuse problems in shoulder.
Involved arm- fatigue, painful overuse syndromes.
Frustration due to focusing on weak and clumsy limb.
Compromised safety
Increased stroke lesion volume may occur if treatment is introduced immediately after stroke (maybe).
Task specific gait training-
Can enable patients w/ stroke to practice walking repetitively rather than in conventional treatment where tone inhibiting manoevres and gait preparatory tasks during sitting and standing dominate.
Practice early w/ best biomechanical gait possible- use assistive devices.
What is task specific gait training?
Practice walking
Done effectively in group settings.
Significant results in circuit training.
In most trials patients walked distances as long as they could tolerate from specific ADL task to task, performing the task, then walking to the next.
Results of task specific gait training:
Increased walking distance (no significant speed increase).
Improvement in timed get up and go test.
How do we get patients to the level that they can ambulate over long distances safely?
Robotic assisted gait training
Supported body weight treadmill training
What is partial bodyweight treadmill training?
Form of training using body weight support (BWS) system to offset a percentage of body mass and provide external balance support, permitting treadmill walking of people in early stages of neuro recovery.
Why is partial bodyweight treadmill training effective?
PBW gait training allows earlier mobilization following neuro insults.
How do we support person's weight in PBW treadmill training?
Harnesses connected to: treadmills, gait trainers, walkers, lift systems in homes via tracking devices.
Why use partial body weight?
Reduces amount of weight patient must bear during gait training.
Decreases demands on the mm, promotes coordination of LEs, and improves posture and balance to minimize risk to patient.
Biomechanically erect gait cycle w/o requiring full support.
Encourages entire gait cycle at early stages of strength and stability enabling correct weight transfer, loading of affected limb, and selective activity of antigravity mm.
By reducing support during intervention, loading of weak extremities and trunk are accomplished gradually.
How much body weight should be supported in treadmill training?
10-20% of body weight support provided optimal sensory feedback and symmetry of loading to patient. Individualize.
Frequency of treadmill training:
As many reps as possible each day, coupled whenever possible w/ functional contexts.
Direct supervision at all times to assure good body and gait mechanics.
What kind of patients can use PBW treadmill trailing for neuro-rehab?
SCI
TBI
Stroke- addresses posture, balance and coordination
CP
Contraindications for treadmill training:
Lightheadedness
Confusion
Dyspnea
Angina
Excessive BP changes
Bradycardia
Advantages of PBW training:
Using support increases patient confidence causing patients to use a more symmetrical gait pattern and tend to walk longer distances and for longer time frames.
Safer for patient and therapist.
Therapist can carefully eval gait pattern.
Disadvantages of PBW training:
Not task oriented
Harness is uncomfortable.
What is the research behind use of PBW training?
Generation of cyclic locomotor patterns can be attributed in some animals to rhythmic neural activity produced by CPG networks in brain stem or SC.
Below lesion SC centers can learn to use lower limb afferents to generate locomotor pattern and treadmill and body support training is effective in activating spinal circuits.
Evidence to support treadmill training:
Performed better on speed, distance, and function than conventional therapy.
Better stride length, more even step lengths, decreased spasticity, and better CV training.
Significant benefits when combined w/ more traditional sessions (functional activities). Improved speed and function.
Lokomat-
Robot-assisted walking therapy is a form of PT that uses a robotic device to help a person whose ability to walk has been impaired due to stroke, SCI, TBI, neuro or ortho condition, learn to walk again.
How does lokomat work?
Person suspended in a harness over a treadmill and the frame of the robot, attached by straps to outside of legs, moves the legs in a natural walking pattern. A computer controls the pace of walking and measures the body's response to the movement.
What effect does robot- assisted walking have on body?
Repetitive walking pattern in biomechanically correct manner helps the brain and SC work together to re-route signals that were interrupted by injury or illness.
May help strengthen mm and improve circulation.
May help strengthen bones at risk for osteoporosis due to lack of use.
What does the robotic device do?
does most of the heavy work, pattern and pace are consistent throughout session, and exercise can be sustained over longer periods of time. You control resistance
Who is mobile earlier: patient in traditional PT or in robotic gait training.
robotic gait training
Functional e-stim combined w/ biofeedback produced...
greater improvements in functional gait speed, cadence, and stride length. These effects didn't last once e-stim was discondinued.
E-stim to spastic mm causes...
significant reduction in muscle tone and increase in ROM, especially when combined w/ casting/splinting.
How does the Bioness L-300 work?
Delivering electrical impulses to common peroneal N which controls mm that cause foot to DF in swing phase of gate and prevent foot drop.
Where is the bioness connected to the person?
Patient wears a lower leg electronic orthosis housing integrated stim unit and electrodes.
Gait sensor worn in shoe detects heel off and heel on positions and signals stimulator to initiate or pause.
Doesn't stabilize ankle making them at risk for sprain.
Evidence for strengthening interventions:
Produced CV effect as well as strength difference w/ no increase in spasticity, but no significant difference in function.
Make sure use the shoulder rules!
CV training evidence:
Using treadmills and stationary bikes improved gait speed, distance, and sensation.
Must be medically stable.
Paradigm shifts in stroke rehab:
Muscle reeducation
Neurotherapeutic/neurorestorative approaches
Functional Task-oriented restorative approach.
Muscle reeducation used in-
polio
Neurotherapeutic/neurorestorative approaches to stroke rehab:
PNF
NDT
Brunnstrom
Functional task-oriented restorative approach:
CIMT
BWSTT
Robot-aided UE movement
Adjunct interventions- mental practice, biofeedback, e-stim
Consensus recommendations for UE intervention: When will it be successful?
Remedial intervention for recovery of the UE won't be successful unless the patient has experienced some recovery.
At least stage 4 of Stages of Motor Recovery of Chedoke McMaster Stroke Impairment Inventory.
If the patient isn't at stage 4 of the Stages of Motor Recovery of Chedoke McMaster Stroke Impairment Inventory, what intervention should be used?
Use compensatory approach.
Any additional intervention won't result in any significant change.
Stages of Motor Recovery of Chedoke McMaster Stroke Impairment Inventory vs. Modified Ashworth:
Used as a predictive scale for potential of making a difference compared to Ashworth which is evaluative.
What does the compensatory approach include?
Maintain a comfortable, pain free, mobile arm and hand.
Proper positioning while at rest
Careful handling during functional activities.
Instruction to provide appropriate self-ROM exercises.
Use humeral supports for first 2 stages during transfers and mobility.
Teach compensatory strategies (one handedness; change in hand dominance)
Function based restorative approach-
Task oriented approach results in motor learning and creates cortical reorganization.
Intervention techniques for function-based restorative approach:
Visual demonstration
Verbal instructions
Manual guidance doing meaningful and valued activities and tasks (ideally self-initiated movement)
Appropriate feedback w/ active problem solving.
Consistent and repetitive practice
Impairment-based restorative intervention:
Result in improvements in impairments, but not function.
Neurorestorative intervention.
Neurorestorative intervention-
NDT, Brunstrom, PNF
Address positive signs and are no more effective than any other impairment based intervention.
NDT-
Neuromuscular development theory/therapy?- Need to work on abnormal before you get normal. All about normal movement and tone. Work to normalize tone.
Bilateral arm training-
Type of evidence-based restorative intervention (EBRI)
Practice the same tasks w/ both hands simultaneously often to rhythm.
Theory- activates the damaged hemisphere via the corpus callosum
Improvements in impairment based tests.
Mental practice-
Type of EBRI
AKA visualization, visual imagery, mental practice, and mental rehearsal.
The symbolic rehearsal of a physical activity in the absence of any gross muscular movement.
Person is instructed to visualize or remember a task and then imagine it occur.
Neural basis for mental practice:
As person imagines movement or task, EMG can detect slight muscle impulses that are similar to those emitted by actual movement.
As a person imagines a function/task, fMRI can detect the same brain activity that's elicited by the actual movement.
Results found from use of mental practice:
Increasing performance of elite athletes.
Reducing falls and social skills training.
Line tracing accuracy w/ hemiparetic limb.
Gross and fine motor skills.
Gait rehab
Limitations of mental practice:
Dependent on person's ability to consistently practice in order to develop a skill.
Unknown whether person must have experience to effectively use it.
Dependent on person's ability to accurately imagine. Accuracy of mind's eye may be affected by neuro damage.
Assets of mental practice:
Cost effective
Conserves energy
Allows imaginers to gain insights into movement allowing the person to develop strategies and correct errors.
Most effective in combo w/ physical practice.
Robot-aided motor training-
mechanical devise designed to train arm movements through intensive practice of repetitive and sterotyped movements at the shoulder and elbow joints using an assistive force or resistive force.
Enhance labor intensive one-to-one intervention in a quantifiable and evaluative way.
Assets of robotics:
Robot can aide w/ PROM
Robot can help maintain range and flexibility, temporarily reduce hypertonia or resistance to passive movement.
Robot can also assist when patient has active, but non-functional movements.
Robot can be used w/ higher level patients who wish to increase strength by providing resistance during movement.
When may use of active-assisted movement w/ robotics be beneficial?
In more severely impaired patients esp. during acute and subacute phases when patients experience spontaneous recovery.
Robotic devices rely on...
the repetition of specific movements to improve functional outcomes.
Robotic devices focus on retraining...
UE, specificaly shoulder, elbow, and wrist movements. Best when movement is self-initiated.
Myomo stand for...
my own movement
Limitations of robotics:
Improves motor outcomes of shoulder and elbow, but doesn't improve functional and motor outcomes of the wrist and hand.
Restrains other movement (trunk-arm and wrist-hand complexes).
No long-term improvements except at impairment level.
Other EBRIs include:
Music, rhythmic, metronome training
Variations of biofeedback
E-stim- bioness
Virtual reality- Wii
Surgical brain implants
How long should you try restorative interventions and what should be used after this period?
2 weeks; d/c w/ compensatory strategies if no functional gains.
Speech and language disorders occur in as many as __% of people w/ strokes.
40
What is common when a stroke survivor has a persistent communication impairment?
Reactive depression, withdrawal, disruption of family roles, and loss of income.
Broca's aphasia AKA
expressive aphasia
Where is the lesion in Broca's aphasia?
L prefrontal motor cortex/frontal lobe
Characteristics of Broca's aphasia:
Speech takes effort and is slow, and pauses between words may outnumber words themselves.
May be perseverate.
May be able to correctly use automatic speech or habitual responses (thank you, lines from familiar songs, sayings, or prayers)
In Broca's aphasia, is the patient aware of errors?
Usually aware of communication errors and may be frustrated, angry, or depressed.
Wernicke's aphasia AKA
receptive (sensory)
Where's the lesion in Wernicke's aphasia?
Lesion of L temporal lobe resulting in no auditory feedback when speaking and inability to comprehend spoken language.
Characteristics of Wernicke's aphasia:
Effortless and produced at normal or even faster than normal rates.
Often shift the order of intended sounds or words.
Doesn't select words that accurately represent their intended meaning.
May use jargon or fluent, but unintelligible speech.
May use neologisms or new words
In Wernicke's aphasia, is the patient aware of errors?
Usually unaware of language errors
Where is the lesion in conduction aphasia?
Results when arcuate fasciculus, the connective path between Broca's and Wernicke's is involved.
Characteristics of conduction aphasia:
Relatively preserved speech production and auditory comprehension.
Difficulty repeating sentences, and their ability to select correct words is impaired.
Marked inability to find the correct word in spontaneous speech and writing or when asked to name objects.
Often use circumlocution, a form of talking around things to communicate or empty speech.
Where is the lesion in global aphasia?
Results from extensive involvement of the frontal and temporal areas of the brain.
Characteristics of global aphasia:
nearly complete loss of ability to comprehend language and formulate speech.
Some automatic speech expressions, including expletives, may be intact.
Other automatic speech routines such as ability to name or count days of the week or hum or sing previously learned songs may also be intact.
Interventions for communication disorders:
Treat patient as an adult.
Provide a quiet, controlled environment w/ minimal distractions.
Avoid talking loudly or more slowly.
Use eye contact and stand in front of field of vision.
Don't assume patient can't understand b/c they can't give verbal feedback.
Simplify communication
Be honest if you don't understand what the patient's trying to communcate.
Point out progress, give realistic feedback.
Adequate time for patient to respond.
Opportunities for natural conversation.
Dysarthria-
An alteration in speech sounds that results from impaired mm control of speech mechanism. Speech is garbled and difficult to understand.
Apraxia of speech-
The inability to program the sequence of movements for speech despite the absence of motor deficits.
Know what they want to say, but lack ability to transform thoughts into verbal content and often become frustrated.
Mrs. C speaks slowly and has anomia. She becomes frustrated as she tries to express herself. This is indicative of ___, caused by cortical damage to the ___ lobe.
Broca's/expressive aphasia; frontal lobe
Do people who have aphasia have cognitive deficits?
no
Dysphagia-
Difficulty swallowing due to- weakness, tone, motor incoordination of oral structures, pharynx, and larynx.
Approx. __% of people w/ strokes have dysphagia.
47
What does dysphagia result in?
Compromised nutrition and hydration, potentially life threatening aspiration (30% of those w/ dysphagia)
Are changes in urinary elimination common w/ stroke?
yes, esp. in acute phase
Urge incontinence-
Type of incontinence most likely to occur after stroke b/c of an uninhibited neurogenic bladder.
Detrusor m of bladder is hyperactive. Involuntary voiding occur due to contractions.
Sexual issues following stroke include:
Sexual function and changes in body image.
Decreases in libido, impotence, or ability to achieve orgasm are common and can result in depression.
Psychological factors including changes in dependency in self-care activities, and changes in sexual roles may also be important.
May feel unattractive or inadequate.
Positioning may be difficult and spasms may increase.
Is sexual activity contraindicated post-stroke?
no, need to recognize need to adjust for affects of fatigability, changes in body image, and decreased self-esteem.
PLISSIT model:
Permission, limited info, specific suggestions, and intensive therapy.
Appropriate for PT/OT to address the first two levels.
Social consequences of stroke:
Social isolation (more severe in women)
Decreased community involvement
Economic strain
Disruption of family function, poor motivation, dependency, loss of control.
__ hemisphere lesions are characterized by anxiety and depression. __ hemisphere lesions are characterized by denial, indifference, emotional lability, and euphoria.
L; R
Is depression common in stroke survivors?
Yes
dysthymia-
type of depressive disorder
Untreated depression post-stroke leads to:
loss of functional gains, failure to continue improvement, failure to resume social activities
Contacts w/ family __ post-stroke, interactions w/ friends __.
maintained; decrease