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What is the most common cause of Dementia?
Alzheimer’s Disease.
Dementia
An umbrella term used to describe disease symptoms caused by abnormal brain changes. Symptoms trigger a severe decline in cognitive abilities, impairing daily life and independent function. Affects patient behavior, feelings and relationships.
Pre-Dementia Symptoms
No functional impairment up to 10 years before
Anosmia (Loss of smell)
Forgetful
Early Dementia Symptoms
Forgetting Medication
Misplacing things
Difficulty with finances (2 years)
Trouble planing
Middle Dementia Symptoms
New info not acquired
Personal care needs
Restless (2-4 years)
Lack of insight
Disoriented
Late Dementia Symptoms
Time Shift
Poor Recognition (1-2 years)
Non-Verbal
Mood Disorders
Aggression
Mobility decrease
Poor nutrition
Alzheimer Disease
70% of Dementia.
B Amyloid plaque in higher quantity, located mostly in hippocampus, parietal and temperal lobes.
Alzheimer Symptoms
short term memory loss
disorientation
difficulty finding words
poor insight
Vascular Dementia
15% of Dementia. Reduced blood flow to neurons giving ischemia and cell death.
Vascular Dementia Symptoms
Multi infarct Dementia – series of small strokes together cause symptoms
Sub cortical Dementia – small penetrating arteries affected (small vessel disease)
Stroke Related Dementia – 30% of Ischemic Strokes
Lewy Body Dementia
10% of Dementia. Abnormal deposits of alpha-synuclein affecting the brains chemical messengers.
Lewy Body Dementia Symptoms
Fluctuating Cognition
Visual Hallucinations
Parkinsons-like features
Suggestive Symptoms of Lewy Body
REM sleep disturbance
Antipsychotic sensitivity
Frontotemporal Dementia Symptoms
Behavioural Variant/Picks disease (most common):
Early behaviour/personality changes
Disinhibition/Social withdraw
Semantic Variant
Difficulty finding the correct words
Fluent aphasia (speech difficulties)
Pick Bodies
Spherical intracellular collections of Tau Fibrils
Frontotemporal dementia risk factors
Age
Genetics (10-30% increase for 1st degree relative)
Gender/Sex (Females)
Cognitive reserve
Diagnosing Dementia
Brain biopsy post-mortem
PET scan
Clinical history/ physical exam
Lab work
CT headscan
Genetic testing
Dementia Treatment
Medications: Cholinesterase inhibitors, NDMA antagonists.
Risk reduction
Behaviour/enviroment support (Familiarity, comfort, attention, redirection)
Mental health support
Aerobic exercise
There is no cure.
Mortality Rates for dementia
1 year: 30-40%
5 year: 65%
Pneumonia is #1 cause.
The 7 A’s of Dementia
ANOSOGNASIA
AGNOSIA
APHASIA
APRAXIA
ALTERED PERCEPTION
AMNESIA
APATHY
ANOSOGNASIA
Brain damage making awareness of impairments difficult. Awareness fluctuates, causes unpredictable behaviour.
Often mistaken for denial, stubbornness, embarrassment.
May resist help, refuse treatment, become angry/defensive, overestimate abilities (dangerous).
Agnosia
Inability to recognize people/objects using senses.
(Ex. Burn self with hot water, eat non-foods, brush hair with toothbrush, mistake caregiver for a stranger - leading to distress surrounding personal grooming.)
Aphasia
Impaired communication skills affecting speech, language comprehension, read and writing.
Examples: Using inappropriate/ made up words, revert to their first language, become difficult to understand.
Apraxia
Loss of motor skills needed for movement or coordination.
ADL becomes difficult (bathing, dressing, walking, eating). Can struggle with remote control buttoms, phones, microwaves.
These cognitive changes can cause dementia patients to say “no” when they’re encouraged to do something – not because they don’t want to, but because they forget how.
Altered Perception
Can make someone living with dementia misinterpret their environment and struggle with how high, low, wide, deep, or near things are.
This can make it hard to move through physical spaces and can cause paranoia and delusions.
A dementia patient may think that bathwater is too deep, dark floors are a dangerous ditch, or scattered clothes are a stranger.
Amnesia
Memory loss that usually impacts short term memory first and eventually effects long term memories as the disease advances.
Damage to the brain can cause a person living with dementia to repeat things over and over, become overwhelmed by too much or new information, forget loved ones and lose their sense of time.
Apathy
Can make someone with dementia lose interest in what is happening around them because of problems with the brain’s motivation pathways.
They may find it hard to start and complete a task, have low energy, or show very little emotional response to events – both good or bad.
Korsakoff’s Syndrome
Chronic deficiency of vitamin B12 - episodic memory severely impaired/ amnesia – psychosis due to alcohol related dementia.
Common cause: alcoholism, eating disorders and chemotherapy. New learning is possible
Creutzfeldt-Jakob Disease
Rare degenerative disease - rapid deterioration - 90% die within year.
Huntington’s Disease
Inherited degenerative disease of movement with behavioral disturbance and progressive dementia that begins during mid-life.
Mental Well Being
Cognitive skills not just memory but learning, problem solving and decision making.
- learn new skills
- develop social networks
5 Wellness Domains
Intellectual, emotional, spiritual, physical, social
Advantages of Early Diagnosis
- future planning, legal arrangements, access local services, access financial services
- network and gain support from work, friends and family, lifestyle changes
- connect and continue normal with the discussion/knowledge that changes are coming
Disadvantages of Early diagnosis
- overshadowing fears impact current living
- feeling stigmatized-focusing on deficits/no longer taken seriously
- relationship changes – friends/family
- worrying about becoming a burden
Signposting
Refers to the process of directing people towards further assistance.
Advice, information, care, support, networks, caregiver supports, volunteers and health professionals.
VIPS
Valuing the person regardless of cognitive ability
Individual Approach
Perspective of each person – putting ourselves in shoes
Social environment -- consider surroundings/relationships
6 C’s of care
Care
Compassion
Competence
Communication
Courage
Commitment
P.I.E.C.E.S
Physical, Intellectual, Emotional, Capability, Environment and Social
D.O.S.
dementia observational system
Tom Kitwood
Dementia Care Pioneer
Promoter of person-centered approach to care – not a “one size fits all” care culture.
He challenged medicalized view of dementia – broadened the definition to include person’s history, personality and the social environment in which they live.
His Equation: Dementia = Personality + Health + Neurological Impairment + Social Psychology
Delirium in Dementia
Defined as a syndrome involving temporary or acute confusioned states resulting from illness or infection. Caused by infection or illness.
Triggered by dehydration, malnutrition, constipation or pain, some medication reactions.
Psychosis in Persons with Dementia
1. Hallucinations
Useful responses for Hallucinations:
Don’t correct/ no reality orientation – distract
2. Delusions: “someone has taken my purse”
Useful responses for Delusions
Avoid contradicting – remain on the same side
Rule out abuse – financial & other
3. Misidentification: don’t contradict - stop and go approach. Try environmental adjustments, are they wearing glasses/hearing aides