the person: dementia basics2. discuss how changes in the brain due to alzheimer’s disease and...
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The Person: Dementia Basics
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Objectives1. Discuss how expected age related changes in the brain might affect
an individual's cognition and functioning
2. Discuss how changes in the brain due to Alzheimer’s disease and related dementias (ADRD) might affect an individual's cognition and functioning
3. Identify factors, besides ADRD, that can affect an individual's behavior and ability to function
4. Discuss common causes of dementia, and associated symptoms
5. Discuss strategies for optimizing function and quality of life among individuals with ADRD
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As we age…It is normal for our brains, like our bodies to slow down.
However, our intelligence remains the same.
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Normal Age Related Changes in Cognitive FunctionSpeed of processing information
Attention (can improve somewhat with good brain health)
Memory (names, where we put things, retrieval may be prolonged, some details lost)
Speech and language remains intact
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How can we keep our brain strong?Maintain good physical health and exercise regularly
Eat a nutritious diet
Participate in cognitive activities
Be socially engaged
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What are cognitive symptoms or changes in function that need further evaluation?Memory loss that disrupts daily function
Difficulty with planning or solving problems
Challenges completing daily activities or tasks
Disorientation with time and place
Difficulty understanding visual images or spatial relationships
New challenges in finding words or difficulty writing
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What are cognitive symptoms or changes in function that need further evaluation?Decreased judgment
Social withdrawal
Frequently misplacing things and cannot retrace steps
Changes in personality or mood
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What could be causing these more significant changes?Depression
Medication
Vitamin and mineral deficiencies
Infection, stroke, brain tumor
Under-active thyroid
Poorly controlled blood sugar
Anemia
Minor cognitive impairment
Dementia
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Dementia Defined
A general term for a group of disorders characterized by at least two of the following:◦ Decline in memory (amnesia)◦ Aphasia (language impairment; can be receptive and/or expressive)◦ Apraxia (impairment/loss of learned motor skills)◦ Agnosia (perceptual impairment)◦ Disturbance in executive function (ability to organize, plan & carry
out a set of tasks)
Results in a loss of independent functioning
Absence of delirium◦ DSM 5
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Dementia causes changes in:Cognition
Function
Behavior
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What are some examples of Amnesia (memory loss)?
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What are some examples of Aphasia (language impairment)?
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What are some examples of Apraxia (impairment/loss of motor skills)?
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What are some examples of Agnosia (perceptual impairment)?
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How Common is Dementia?
Affects 5-6 million Americans
6th leading cause of death in the US
$226 billion cost annually
1 in 9 people over 65 years of age have Alzheimer’s disease (the most common cause of dementia)
Age is the most significant risk factor for dementia◦ Alzheimer’s Association, 2015
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Causes of Dementia
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Definition of Dementia of the Alzheimer Type
Development of multiple cognitive deficits manifested by memory impairment and 1 or more of the following:
◦ Aphasia (language impairment)◦ Apraxia (impairment/loss of learned motor skills)◦ Agnosia (perceptual impairment)◦ Loss of executive functioning (ability to organize, plan and carry out a set of
tasks)
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Alzheimer’s Disease: Changes in the Brain
Senile plaques: Beta-amyloid protein deposits that build up outside and around the nerve cells
Neurofibrillary tangles: Twisted fibers of the tau protein that build up inside the nerve cell
◦ Alzheimer’s Disease Education and Referral Center (ADEAR)
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Healthy Brain versus Brain Affected by Severe Alzheimer’s Disease
ADEAR Center (2006)
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Risk Factors for AD
Age
Gender
Education
Family History
Head trauma
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Progression of Alzheimer Disease: Mild Stage
MMSE (Mini-Mental State Exam) score ≥ 21
Memory loss, difficulty finding words, getting lost in familiar places
Personality change, irritability, anxiety, depression
May be able to maintain activities of daily living (ADLs) with minimal assistance
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Progression of Alzheimer Disease: Moderate Stage
MMSE score of 10-20
Increased confusion
Needs assistance with IADLs and ADLs
Behavior problems become more evident
Close observation needed to maintain safety
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Progression of Alzheimer Disease: Severe Stage
MMSE ≤ 9
Difficulty recognizing family or familiar faces
Incontinence
Gait disturbance
Needs assist with all ADLs
24 hour care
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Other Causes of Dementia
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Frontal Temporal Dementia (FTD)3-10% of dementias at autopsy
Pick’s Disease is a type of FTD
Family history 42-50%
Personality change, disinhibition, apathy
Frontal and temporal lobes with neuronal loss and decreased blood flow
Onset in mid 50s
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Lewy Body DementiaDementia, Parkinsonism and psychosis
Levodopa often unhelpful
Sensitive to antipsychotics
Lewy bodies (intracellular inclusions usually found in the substantia nigra) found in cortex and brain stem
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Vascular Dementia10-15% of all dementias
Stepwise progression
Focal neurologic exam and/or gait disturbance
Patchy cognitive deficits
Stroke or lacunar infarcts on brain imaging
CVA risk factors
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Parkinson’s Disease
Tremor, rigidity and bradykinesia
Postural disturbance
Dementia in 20-25% (typically does not occur until motor symptoms are present for at least 5-7 years)
Minor cognitive impairment in 50%
Free recall impaired; recognition is good
Depression is common
Motor aspects of speech affected
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Besides dementia, what else can cause changes in:Cognition?
Function?
Behavior?
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Factors that impact cognition, function and behavior
Physical and medical disorders
The environment
Caregiver approach and interaction
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What is the Individual Trying To Communicate?
“I don’tunderstand you.”
“I’m constipated”
“I’m in pain”.
“You’rerushing me”.
“It’s too noisy”.
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Cognitive Impairment
Resident uses the call bell constantly to ask for someone to take her home. Complains: “No one is helping me.”
“He urinated in the trash can, and not the commode.”
“He pushes me away when I try and take him to the bathroom!”
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Interventions for Cognitive Impairment
Adjust expectations to abilities
Simplify communication
Cue and role model
Minimize objects that may be misperceived
Optimize sensory input
You almost always get a “do over”
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Environmental Factors
Temperature
Noise
Over and under stimulation
Too much or too little space
Familiarity, routine
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Environmental Factors
“He goes off when the bed alarm is sounding.”
“She hits him when he pushes her in the wheelchair.”
“She threw the fork, plate and glass of milk!”
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Interventions for the EnvironmentAdapt environmental stimuli (noise, temperature, lighting, peers, staff, etc.)
Keep routines and caregivers consistent as much as possible
Provide opportunities for activity to prevent boredom
Redirect and distract as needed, making sure there are activities and items available to help redirect and distract
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We know that…Residents with dementia exhibit behavioral symptoms most commonly during care activities, such as:
◦ Bathing◦ Oral care◦ Dressing◦ Transfers and mobility◦ Toileting◦ Mealtime
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Caregiver Approach
Older adults with dementia◦ Have difficulty understanding verbal directions◦ Misinterpret touch that occurs during care activities◦ Care becomes a perceived threat and results in fear, fight/flight response
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Therapeutic Communication
Listen and show empathy (acknowledge the fear, worry, anger, etc.)
Validate their feelings and reassure them
Then redirect, distract
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Use a Functional Approach to Decrease Resistiveness to CareUse cueing, gesturing, pantomime
He washes one area and you another
Hand over hand technique
Minimize verbal speech
Use deeper voice if resident is hard of hearing
Remain calm
Limit the number of caregivers
Wait for the “best time” for the resident
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Physical Medical DisordersPain
Constipation
Infection
Medication
Delirium
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Physical/Medical Disorders
“He’s so sleepy, it’s hard to get him to eat. The food runs out of his mouth.”
“He cries when we get him up to transfer to the commode.”
“She’s up at night asking to go to the bathroom every 30 minutes.”
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Delirium
Syndrome characterized by the acute onset of cerebral dysfunction with:
◦ A change or fluctuation in baseline mental status◦ Inattention◦ Disorganized thinking or an altered level of consciousness
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Delirium is under-recognizedNurses identify delirium only 31% of the time (Inouye et al., 2001)
Risk Factors for under-recognition:◦ Hypoactive “quiet” form◦ Resident age 80 or above◦ Visual impairment◦ Dementia
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Subtypes of Delirium
Hypoactive Hyperactive Mixed
Level of Alertness
Drowsy, lethargic, distractible
Vigilant, hyper-alert
Alternates
Motor activity
Slow, less coordinated
Active/restless, but disorganized
Alternates
Ability to follow commands
Passively cooperative, follows 1 step command
Combative, resistant
Alternates
Thinking Quiet, disorganized
Distractible, rambles
Alternates
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Physical/Medical Disorders
Give vigilant medical care
Recognize and treat delirium early
Consider the impact of pain…