overview of dementia - ucla gwep
TRANSCRIPT
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OVERVIEW OF DEMENTIA
David Franklin, Psy.D., MHA
Neuropsychologist
Director of the Adult Abuse Forensic Program, County of Riverside
Director of the UCR Comprehensive Sports Concussion Program
Health Science Associate Clinical Professor, UC Riverside School of Medicine
Department of Psychiatry and Neuroscience
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DISCLOSURE
None of the faculty, planners, speakers providers nor CME committee has any relevant financial relationships with commercial interest.
There is no commercial support for this CME activity
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COMING TO TERMS WITH AD
• What is it?
• Why is it important?
• How to differentiate it?
• How to understand it?
• How to deal with it effectively?
• Why the need for further research?
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INTRODUCTION
• In general geriatric psychiatry, the majority of patients will be diagnosed with one of the 3 D’s:Delirium, Depression and Dementia.
• Those diagnosed with one d/o are at risk for developing a second of the 3 D’s; Demented patients have a 10-20 time > incidence of developing depression than community elders.
• Considerable overlap in the diagnostic criteria of these d/o’s .
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DEMENTIA DEFINITION (DSM-IV)
• Multiple Cognitive Deficits including:
• 1)Memory Dysfunction (especially new learning)
• 2)at least one additional cognitive deficit; aphasia, apraxia, agnosia or executive function
• Cognitive disturbances must be sufficiently severe to cause impairment of occupational or social functioning and must present a decline from previous level of functioning
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DEMENTIA DIAGNOSIS (DSM-V)
• Major/Mild Neurocognitive Disorder (NCD)
• Evidence of a moderate or significant cognitive decline from previous performance in 1 or more cognitive domains: complex attention, executive functioning, learning and memory, language, or social cognition
• Modest to severe Impairment documented in cognitive performance preferably by neuropsychological testing
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DIFFERENTIAL DIAGNOSIS MILD VS MAJOR
• IADLs
• The cognitive deficits do not interfere with capacity for independence in everyday activities (i.e., complex instrumental activities of daily living such as paying bills or managing medications are preserved, but greater effort, compensatory strategies, or accommodation may be required .
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TYPES OF MAJOR/MILD NCD
• Alzheimers Disease
• Vascular Dementia
• Lewy Body Disease
• Parkinson’s Disease
• TBI
• Frontal Temporal Lobar Degeneration (FTLD) • Behavioral Variant
• Primary Progressive Aphasia
• Pick’s Disease
• Corticobasal Degeneration
• Progressive Supranuclear Palsy
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TYPES OF DEMENTIA (HISTORY)
• Alzheimer’s Dementia• Putative Risk Factors
• AGE (Greatest Risk)• Family History• Head Trauma• Low Educational level • Family History of Down’s Syndrome• Possibly late onset depression
• Course and History• Insidious Onset (usually after the age of 65)• More common in women• Cognitive Impairment noticed first• Gradual and Progressive (behavioral changes and
psychosis)
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WHY WOMEN MAY HAVE INCREASE RISK?
• Women Live Longer (Age greatest Risk Factor)
• Potentially due to biological or genetic variations or different life experiences (type and amount of education, or occupational choices)
• Men who make it pass age 65 maybe more cardiovascularly healthy than females
• Interaction of APOE-e4 and estrogen
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ALZHEIMER’S DISEASE (AD): MORE THAN JUST MEMORY LOSS
• AD is a progressive, degenerative disease involving:
• Loss of memory and other cognitivefunctions
• Decline in ability to perform activities of daily living
• Changes in personality and behavior
• Increases in resource utilization
• Eventual nursing home placement
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ALZHEIMER’S WARNING SIGNS -TOP TEN
• 1)Recent memory loss affecting job
• 2)Difficulty performing familiar tasks
• 3)Problems with language
• 4)Disorientation to time and place
• 5)Poor or decreased judgement
• 6)Problems with abstract thinking
• 7)Misplacing things
• 8)Changes in mood or behavior
• 9)Changes in personality
• 10)Loss of initiative
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EARLY CLINICAL SIGNS OF AD
Asking the same question over and over again
Repeating the same story, word for word, again and again
Forgetting how to perform common tasks previously performed with ease, such as cooking, making repairs, playing cards
Losing one’s ability to pay bills or balance one’s checkbook
Getting lost in familiar surroundings, or misplacing household objects
Neglecting to bathe, wearing the same clothes over and over again, while insisting they have taken a bath or that their clothes are still clean
Relying on somebody else, such as a spouse, to make decisions or answer questions
Pfeiffer E. AgeLines. Suncoast Gerontology Center, University of South Florida. Tampa, FL. 1992.
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PROGRESSION OF ALZHEIMER’S DEMENTIA
Mild Moderate
Short-term
memory loss
Word-Finding
Trouble
Mood
Changes
Behavioral, personality
changes
Long-term memory
affected
Wandering, agitation,
aggression, confusion
Require assistance with
ADLs
Increase in behavioral
disturbances
Loss of ADL capacity
Incontinence
Motor disturbances
Placement in long-
term care facilities
Stage
Symptoms
Severe
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0
5
10
15
20
25
30
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
Years
MM
SE
sc
ore
Early Diagnosis Mild-Moderate Severe
Cognitive Symptoms
Loss of ADLs
Behavioral Problems
Nursing Home Placement
Death
Feldman H, Gracon S. In: Clinical Diagnosis and Management of Alzheimer’s Disease. 1996, 239-253.
THE PROGRESS OF ALZHEIMER'S DISEASE
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TYPES OF DEMENTIA (HISTORY)
• Vascular Dementia• Putative Risk Factors
• Vascular Insult (White Matter Ischemic Changes, lacunar infarcts, chronic small vessel ischemic disease)
• Hypercholesterimia, hyperlipidemia, and hypertension
• Course and History• Insidious
• Step-wise deterioration
• Waxing and Waning
• Behavioral and Cognitive Symptoms noticed first. Not unusual for Behavioral symptoms first
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VASCULAR DEMENTIA
• Cerebrovascular Disease: Focal Neurologic signs, Evidence on brain imaging (Multiple large vessel infarcts or Single strategically placed infarct)
• Onset of Dementia within 3 months following a stroke or Abrupt deterioration of functioning or Fluctuating stepwise progression
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TYPES OF DEMENTIA (HISTORY)
• Fronto-temporal lobe dementia (FTD)
• Risk Factor
• Family History of a similar dementia
• Thyroid disease
• Head Trauma
• Course
• Mean age is 52
• More Common in Men
• Significant Behavior and Personality Changes then Cognitive Impairment
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TYPES OF DEMENTIA (HISTORY) CONT…
• Dementia due to Lewy Body Disease
• Progressive Cognitive Decline
• At least two of the following
• Parkinsonism or gait imbalance
• Visual Hallucinations
• Visuospatial Impairments
• Waxing and Waning Cognitive Ability
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Age (years)
65 70 75 80 85 90
10
0
20
30
40
50
60
70
Alz
heim
er’s
Dis
ease
(%
)
Adapted from: Hebert LE, et al. JAMA. 1995;273:1354-1359.
PREVALENCE OF ALZHEIMER’S DISEASE
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PREVALENCE OF AD
• Currently, 5.3 million Americans suffer from AD (5.1 million >65 yo and 200,000 under 65 y.o.)
• 81% of individuals who suffer from AD are 75 years or older
• Older African Americans and Hispanics are more likely than older whites to have Alzheimer’s
• Possibly due to variations in health, lifestyle, and socioeconomic risk factors.
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MONETARY COSTS OF DEMENTIA IN THE U.S.
• The estimated prevalence of dementia among persons older than 70 years of age in the United States in 2010 was 14.7%.
• The yearly monetary cost per person that was attributable to dementia was either $41,689-$56,290.
• These individual costs suggest that the total monetary cost of dementia in 2010 was between $157 billion and $215 billion.
RAND Study , NEJM 2013, M. Hurd
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DIFFERENTIALS
• Depression (Pseudodementia)
• Delirium
• Drugs
• Metaboloic/Endocrine Changes
• Infections (UTI)
• Traumas
• NPH
• Alcohol
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DEPRESSION Onset = Rapid
Precipitants = Psychosocial
Duration = Less than 3 months to presentation
Mood = Depressed, anxious
Behavior = Decreased activity or agitation
Cognition = Unimpaired or poor responses
Somatic Symptoms = fatigue, lethargy, sleep, appetite
Course = Rapid resolution with treatment, but may precede Alzheimer’s
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DRUGS
• Anticholinergics: Benztropine, amitryptaline, scopolamine, hyosciamine, oxybutinin, diphenhydramine
• GABA Agonists: Benzodiazepines, barbiturates, ethanol, anti-convulsants
• Beta blockers: Propranolol
• Dopaminergics: l-dopa, alpha-methyl-dopa
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MEDICAL/ENDOCRINE
• Thyroid Dysfunction (Hyper or Hypo)
• Diabetes
• Hypoglycemia
• Hypercalcemia
• Nephropathy, Uremia
• Hepatic Dysfunction (Wilson’s Disease)
• Vitamin Deficiency (B12, Thiamine, Niacin)
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TRAUMA
• Concussion, contusion
• Subdural hematoma
• Hydrocephalus; normal pressure (late effect of bleed)
• Possible contributor to Alzheimer’s Dementia initiation
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INFECTIOUS CONDITIONS
• HIV
• Neurosyphillis
• Viral Encephalitis (Herpes)
• Bacterial Meningitis
• Fungal Infection (Cryptococcus)
• Prion (Jakob-Creutzfeld Disease)
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CAN’T BE DONE WITHOUT THESE
History
Clinical Observation
Testing and Imaging
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LABORATORY TESTS
• Blood Tests: Electrolytes, LFT’s, Kidney function tests, glucose, Thyroid function tests, B12, folate, CBC, VDRL, HIV (if indicated)
• EKG
• CXR
• UA
• NEUROIMAGING
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NEUROPSYCHOLOGICAL TESTING
• Memory; short term and remote
• Verbal function; Fluency
• Visuo-spatial function
• Attention
• Executive function
• Abstract thinking
• Account for education and social function
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SEVERITY ASSESSMENT
• MMSE / MOCA
• Verbal Fluency
• Full Neuroppsychological Evaluation
• IADL Measures
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AS AD PROGRESSES, LOSS OF FUNCTION BECOMES MORE EVIDENT
With permission from Galasko D. Eur J Neurol. 1998;5:S9-S17.
AD
L
Progressive Loss of FunctionMMSE Score
25 20 15 10 5 0
0 2 4 6 8 10
Years
KEEP APPOINTMENTS
TELEPHONE
OBTAIN MEAL/SNACK
TRAVEL ALONE
USE HOME APPLIANCES
FIND BELONGINGS
SELECT CLOTHES
DRESS
GROOM
MAINTAIN HOBBY
DISPOSE LITTER
CLEAR TABLE
WALK
EAT
Patients Able to
Perform
Independently (%)
75% 25%
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VISUOSPATIAL ASSESSMENT Clock Drawing
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BEHAVIORAL PROBLEMS
• Mood disorders
• Psychotic disorders
• Inappropriate behaviors
• Aggression:verbal, physical
• Purposeless activity:verbal, motor
• Meal time behaviors
• Sleep disorders
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HALLMARKS OF ALZHEIMER’S
• Nerve cell loss
• Beta Amyloid Plaques (with amyloid cores) – Occur outside the neurons
• Interfere with the neuron to neuron communication
• Neurofibrillary tangles (abnormally phosphorylated tau proteins) – Occur within the neurons.
• Blocks the transport of nutrients and other essential molecules inside neurons
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Normal AD
AP NFT
AP = amyloid plaques
NFT = neurofibrillary tanglesCourtesy of George Grossberg, St Louis University, USA
NEUROPATHOLOGICAL CHANGES CHARACTERISTIC OF AD
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GENETICS DO PLAY A ROLE
• 1% or Less of Alzheimer’s
• Mutation of the Amyloid Precursor Protein (APP), Presenilin 1 and Presenilin 2
• Positive for mutation of APP or Presenilin 1 gene guaranteed to develop Alzheimer’s Disease
• Positive for Presenilin 2 gene have a 95% chance of developing the disease
• Presence of any of these 3 genes develop Alzheimer’s symptoms prior to the age of 65.
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GENETICS
• Apolipoprotein E Gene
• Provides the blueprint for a protein that transports cholesterol in the bloodstream. You have 1 of 3 variants (e2, e3 or e4)
• e2 decreases the risk of developing AD
• One copy of e4 increases the risk of AD by 3 folds and 2 copies of e4 8 to 12 fold higher risk
• Initial stages occur younger
• 40-65% of AD Patients have 1 or 2 copies of e4
Holtzman (2012). Apolipoprotein E and apolipoprotein E recepetors: Normal biology and roles in
Alzheimer's Disease. Cold Springs Harb Perspect Med
44
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LONG-TERM COGNITIVE BENEFITS OF GALANTAMINE TREATMENT
Adapted with permission from: Raskind MA, et al. Neurology. 2000;54:2261-2268. Torfs K, et al. World
Alzheimer Congress, 2000.
* P<0.05 vs. placebo/galantamine (not statistically different from baseline)
Galantamine 24 mg/galantamine 24 mgHistorical placebo group
Placebo/galantamine 24 mg
Improvement
Deterioration
0 3 6 9 12
Mea
n (±
SE
) C
hang
e fr
om
Bas
elin
e in
AD
AS
-cog
Sco
re
–4
–3
–2–1
01
23
45
6
7
Months
*
Open-extensionDouble-blind
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HOLMES STUDY (MMSE 10-27)
ARICEPT SHOWED SIGNIFICANT EFFICACY IN TREATING BEHAVIORAL S SYMPTOMS IN MILD-TO-MODERATE AD
Baseline 12 Weeks
Mea
n N
PI
Sco
re
* *
**
* †*
**
N = 128.
*P<0.0001; †P<0.005.
Adapted from Holmes C, et al. Neurology. 2004;63:214-219.
7
0
1
2
3
4
5
6
Clinical
Improvement Open-Label Phase
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MEMANTINE COMBINATION THERAPY WITH DONEPEZIL
Design
A US multicenter, randomized, double-blind, placebo-controlled trial
Population
404 subjects with moderate-to-severe AD (MMSE range, 5-14) receiving donepezil at least 6 months (3 months, stable dose)
Treatment
Memantine 20 mg/day (10 mg BID) or placebo
All subjects received donepezil (ChE-I) for study duration
Duration
24 weeks
Tariot P, et al. JAMA. 2004;291:317-324.
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COGNITION: SEVERE IMPAIRMENT BATTERY (SIB)
-4
-3
-2
-1
0
1
2
3
4
0 4 8 12 18
Treatment Week
24
Memantine/DonepezilI
Placebo/Donepezil
*
**
***
*P< 0.05
**P< 0.001
Least square mean change, ANCOVA
ITT population, LOCF
Mea
n C
hang
e
from
Bas
elin
e (
±S
EM
)
Tariot P, et al. JAMA. 2004;291:317-324.
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FUNCTION: ACTIVITIES OF DAILY LIVING (ADCS-
ADLSEV)
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
Mea
n C
hang
e fr
om B
asel
ine
(±S
EM
)
0 4 8 12 18
Treatment Week
24
* *
*
* P< 0.05
Least square mean change, ANCOVA
ITT population, LOCF
Memantine/DonepezilI
Placebo/DonepeziI
Tariot P, et al. JAMA. 2004;291:317-324.
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DEMENTIA SYNDROME
• Behavioral Manifestations:Apathy, Agitation, Irritability, Anxiety, Disinhibition, Motor Dysregulation (wandering, pacing), Depression, Appetite Changes, Delusions, Night Behaviors (Sundowning), Hallucinations, Euphoria, Incontinence
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TREATING THE DEMENTIA SYNDROME
• Unfortunately, few controlled studies of psychotropic agents in dementia
• No medication currently approved by the U.S. FDA for the treatment of Bx disturbance in dementia
• Currently used Medications: Antipsychotics, Benzodiazepines, Buspirone, Beta-blockers CBZ, Li, SSRIs, Divalproex
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FUTURE DIRECTION?
• Eli Lilly and Company - semagacestat, a gamma secretase inhibitor being studied as a potential treatment for Alzheimer's disease. Plaque Buster?? Worsened cognition greater than placebo
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SUMMARY
• Dementia diagnosing is increasing in frequency
• Treatments to offset the natural progression of the illness are needed yet not currently available
• With illness progression appropriate pharmacological interventions are necessary
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CONTACT INFORMATION
Priscilla Bruny
Program Coordinator
Geriatric Medicine Division
(951) 486-5623