Dementia Flashcards

1
Q

Ageing Overview

A
  • change comes with age and is influenced by genetic patterns of aging as well as lifestyle choices
  • older adults are the most rapidly growing age group among Americans
  • 12.5% of US population is 65+
  • 1.2% of US population is 85+
  • by 2050, 20.4% of US population is projected to 65+ and 4.8% is expected to 85+
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2
Q

Young-Old

A

65-74 years

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3
Q

Old -Old

A

75-84 years

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4
Q

Oldest-Old

A

85 years and older

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5
Q

geriatrics

A

area medicine that deals with the elderly

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6
Q

We must account for specific issues when working with the geriatric population secondary to:

A

physiological differences

higher frequency of multiple chronic illnesses

greater number of sensory impairments

increased chance of being on multiple
potentially interacting medications

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7
Q

Normal Signs of Aging: SKIN

A

skin:

less elastic with more lines and wrinkles; fingernail growth slows as does oil production

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8
Q

Normal Signs of Aging: HAIR

A

will gradually thin; hair pigment cells will decline and gray hair growth increases

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9
Q

Normal Signs of Aging: HEIGHT

A

by age 80, it is common to have lost 2 inches; often related to normal changes in posture and compression of joints, spinal bones and spinal discs

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10
Q

Normal Signs of Aging: HEARING

A

changes in the ear make higher frequency sounds harder to hear and changes in tone and speech less clear; tends to accelerate post age 55

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11
Q

Normal Signs of Aging: VISION

A

most people in their 40’s develop a need for reading glasses; normal for night vision and visual sharpness to decline while glare increasingly interferes with clear vision

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12
Q

Normal Signs of Aging: BONES

A

gradually lose mineral content, become less dense and strong; in women bone loss increases after menopause; increased risk of osteoporosis

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13
Q

Normal Signs of Aging: Metabolism and Body Composition

A

over time the body requires less energy and so metabolism slows; hormone changes will facilitate a shift for the body to store more fat and less muscle mass

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14
Q

Normal Signs of Aging: CNS

A

beginning in the third decade of life, the brain’s weight and size of its nerve network and blood flow decreases; brain adapts by forming new connections; memory changes are typical with less recall of recent memories and slower ability to remember names commonplace

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15
Q

Normal Signs of Aging: Heart and Blood Circulation

A

heart becomes less efficient; works harder during activity than it once did; heart muscle will increase in overall mass; gradual decline in endurance

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16
Q

Normal Signs of Aging: Lungs

A

in inactive people, lungs become less efficient over time, supplying the body with less oxygen

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17
Q

Normal Signs of Aging: Kidneys

A

with age, decline in size and function; they do not clear wastes and some medicines from the blood as quickly and do not hand dehydration as well

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18
Q

Normal Signs of Aging: Urinary Incontinence

A

should not occur but may happen due to immobility and side-effects of some medicines

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19
Q

Normal Signs of Aging: Sexual Function

A

both men and women begin producing less hormones

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20
Q

Cognitive Changes in Normal Aging

A
  • normal part of life; will be variable
  • general cognitive decline begins typically in the sixth decade
  • verbal abilities are usually maintained until the eighth decade
Additional areas to show decline with aging include:
memory	
abstraction
language
visuospatial abilities
attention
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21
Q

Memory Changes in Aging (look at chart)

A

several types of memory are affected in the normal aging process

however, elderly are compromised little in everyday life

memory is stored knowledge and the processes for making and manipulating it

humans have many memory systems that can each be separately impaired by trauma or disease

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22
Q

Sensory Memory

A

brief registration of incoming sensations

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23
Q

Working Memory

A

info in conscious awareness; active in the reception, encoding and retrieval of information; allows us to make quick decisions and plan actions

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24
Q

LTM

A

dichotomized as both declarative and nondeclarative

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25
Declarative Memory
all about facts; semantic, episodic, lexical
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Nondeclarative Memory
all about motor and cognitive (skills), habits, priming, conditioned responses and reflexes
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Semantic Memory
think concepts (letter B on lichteim’s diagram)
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Lexical Memory
words, spelling, ect.
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Vision
- acuity change after the fourth decade; will most likely see a decrease in visual field - light sensitivity requires 3x as much light as young after age 70 - dark adaptation or adjustment of vision when moving from bright to dim light - color sensitivity decreases w/age: change in blue color starts at 40-50y; change in green starts in the 60’s - perception: more difficult w/figure-ground discriminations and visuospatial skills (size, distance and position) - visual memory (more effective at all ages than auditory memory) - light on dark for testing/reading; focus on high contrast vs. low contrast
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Slowing Down the Aging Process
- stay away from smoking and limit alcohol consumption - maintain high levels of physical activity; EXERCISE - facilitates muscle flexibility, strength and mood - routine medical care - maintain cardiovascular health - extensive social support network
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Frail Elderly
those most likely to be in need of age-specific, multidisciplinary approaches “frailty” suggests a diminished ability to carry out important practical and social aspects of daily living
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Common Problems
``` polypharmacy dementia delirium incontinence (both fecal and urinary) arthritis visual and hearing deficits pressure ulcers malnutrition osteoporosis high risk of falls ```
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Functional Status and ADLS
- functional status is commonly defined by a person’s ability to perform ADL’s - to be able to live alone without help, a person must be able to perform ADL’s independently - pt must be able to complete self-care, self-maintenance and physical activities independently - common ADLs include: bathing, dressing, toileting, transferring, continence, and feeding
34
Functionality Assessment Tools
Katz index of independence in activities of daily living “Katz ADLs” functional status questionnaire functional independence measure (FIM)
35
Polypharmacy
refers to the tendency of many older persons to be on numerous medications some numbers suggest that the elderly are ~12% of the population, however receive 32% of prescriptions on average, an elderly individual may have 2-6 prescription drugs + 1-3.4 OTC medicines
36
ADRS (Adverse Drug Reaction)
``` every drug has side effects ibuprofen can cause: gastric ulceration (sometimes w/bleeding) kidney impairment edema liver enzyme elevation drowsiness and dizziness, etc ```
37
Potential for an ADR
- 6% when the pt is taking 2 medications - 50% when the pt is taking 5 medications, and - 100% when the pt is taking 8+ medications supporting the facts that ADRs are serious is the statistic that 20-25% of hospital admissions for persons 65+ is due to an ADR
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Risk Factors for Cognitive Decline
HTN, diabetes, poor nutrition and social isolation (primary factors) heart disease family history of dementia psychological factors such as stress and depression
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Differential Diagnosis
Delirium Dementia Mild cognitive impairment Confusion
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Symptoms of Confusion
``` disorientation impaired attention span distractibility purposeless activity anxiety; apprehension fright; fear; agitation verbosity confabulations dependent behavior ```
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Symptoms of Confusion Cont...
``` attention seeking behaviors withdrawal belligerence combativeness statement of confusion memory loss personality change inability to complete ADLs change in person’s usual behaviors ```
42
Delirium
sudden severe confusion with rapid changes in brain function | a disturbance of consciousness accompanied by a change in cognition
43
Delirium Symptoms
- changes in alertness (usually more alert in the morning, less alert at night) - changes in feeling (sensation) and perception - changes in level of consciousness or awareness - changes in movement (may be inactive or slow moving) - changes in sleep patterns, drowsiness - confusion (disorientation) about time or place
44
Delirium Symptoms Cont...
``` decrease in STM and recall unable to remember events since delirium began unable to remember past events disrupted or wandering attention inability to think or behave with purpose problems concentrating disorganized thinking incoherent speech ```
45
Delirium Symptoms: emotional personality changes
``` anger anxiety apathy depression euphoria irritability ```
46
Etiologies of Delirium
- most often caused by physical or mental illness and is usually temporary and reversible - drug abuse - infections such as UTIs and pneumonia - persons already with CVA or dementia - poisons - fluid/electrolyte or acid/base disturbances - pts w/more severe brain injuries are more likely to get delirium from another illness
47
Complications of Delirium
- loss of ability to function or care for self - loss of ability to interact - progression to stupor or coma - side effects of medications used to treat the disorder
48
Mild Cognitive Impairment
MCI - development of cognitive and memory issues that are not severe enough to be dx’d as dementia - symptoms are more pronounced that the cognitive changes associated w/normal aging - the more impaired a person is with MCI, the greater the likelihood he/she will develop dementia (perhaps AD) - a dx of MCI does not imply that a person is not capable of functioning independently in most situations
49
Dementia
- dementia is a syndrome and not a disease - a syndrome is defined as a constellation of signs and symptoms According to the APA (American Psychiatric Association) the necessary features for a true diagnosis of dementia include: [1] erosion of recent and remote memory [2] impairment of one or more of the following functions -language (ex: aphasia) -motor activity (apraxia) (although physical ability is intact) -recognition (agnosia) (although sensory ability is intact) -executive functions *deficits must be sufficient enough to interfere w/functioning pts must have difficulty w/cognition, memory, language, visual-spatial skills, emotion, personality dementia is not a normal part of the aging process
50
Global Dementia Types
there are reversible and irreversible dementia etiologies all possible etiologies for reversible dementia must be exhausted and ruled out prior to a pt being given a diagnosis of irreversible dementia
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Reversible Causes of Dementia
The reversible causes of dementia are treatable The reversible causes of dementias include: - infection, drug toxicity, vitamin deficiency, tumor, depression - normal pressure hydrocephalus, renal failure, CHF - thyroid disease, hypoglycemia, syphilis
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Pseudodementia
- pseudodementia or geriatric depression is classified as a reversible dementia in some diagnostic models - some suggest that ≤10% of dementias are reversible with more than 2/3’s of them resulting from drug toxicity, depression or metabolic disorder - pts with pseudodementia present w/cognitive impairments, difficulty sleeping, appetite changes and decreased affect - drug tx is generally successful in improving affect and cognitive symptoms
53
Irreversible Causes of Dementia
``` alzheimer’s disease pick’s disease frontotemporal dementia or PPA creutzfeldt-jakob’s disease huntington’s disease multiple infarctions vascular disease wilson’s disease parkinson’s disease lewy body disease binswanger’s disease HIV PSP ```
54
Dementia Classification
``` cortical dementias subcortical dementias progressive dementias primary dementia secondary dementia ```
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Signs of Possible Dementia
- getting lost in familiar places - repetitive questioning - odd or inappropriate behaviors - forgetfulness of recent events - repeated falls or loss of balance - personality changes - decline in planning and organization - changes in diet/eating habits - changes in hygiene - increased apathy - changes in language abilities, including comprehension - dx of dementia is not usually given if there is no impairment in social functioning and independent living
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Communication Language Deterioration
- communication is the sharing of information by means of an arbitrary symbol system - communication is a manifestation of cognition - persons w/dementia have difficulty w/intentional communication because they have multiple cognitive deficits - in pts w/dementia, the degree of language impairment is often proportionate to the deterioration of other mental functions
57
Dementia Classification
``` cortical dementias subcortical dementias progressive dementias primary dementia secondary dementia ```
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Signs of Possible Dementia
- getting lost in familiar places - repetitive questioning - odd or inappropriate behaviors - forgetfulness of recent events - repeated falls or loss of balance - personality changes - decline in planning and organization - changes in diet/eating habits - changes in hygiene - increased apathy - changes in language abilities, including comprehension - dx of dementia is not usually given if there is no impairment in social functioning and independent living
59
Communication Language Deterioration
- communication is the sharing of information by means of an arbitrary symbol system - communication is a manifestation of cognition - persons w/dementia have difficulty w/intentional communication because they have multiple cognitive deficits - in pts w/dementia, the degree of language impairment is often proportionate to the deterioration of other mental functions
60
Early Stage Dementia
Sounds: used correctly Words: may omit a meaningful word, usually a noun when talking in sentences; may report anomic issues; vocabulary is shrinking Grammar: generally correct Content: may drift from topic; reduced ability to generate series of meaningful sentences; difficulty comprehending new information; may be vague Use: knows when to talk but may talk too long on a subject; may be apathetic, failing to initiate conversation appropriately; difficulty w/humor, analogies, sarcasm and indirect/non-literal statements
61
Middle Stage Dementia
Sounds: used correctly Words: difficulty w/thinking of words in a category; anomia in communication; difficulty naming objects; vocabulary is noticeably diminished Grammar: sentence fragments and deviation common; difficulty w/complex grammatical sentences; Content: frequently repeats ideas; forgets topic; talks about events of past; few ideas Use: knows when to talk; recognizes questions; may fail to greet; loss of sensitivity to communicative partners; rarely corrects mistakes
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Late Stage Dementia
Sounds: generally used correctly; errors are not uncommon Words: marked anomia; poor vocabulary; lack of word comprehension; neologisms; jargon Grammar: somewhat preserved; sentence fragments and deviations common; may lack comprehension of many grammatical forms Content: generally unable to produce sequence of related ideas; content is meaningless and bizarre; subject of most meaningful events is from the past; marked repetition of words and phrases Use: generally unaware of surrounding and context; little meaningful use of language; some pts will be mute; some pts will be echolalic