DEMENTIA everything u need to know
-
Upload
droveesomch -
Category
Health & Medicine
-
view
1.440 -
download
1
description
Transcript of DEMENTIA everything u need to know
WELCOME
DEMENTIA
PRESENTED BY DR. AHMED TANJIMUL ISLAMGHORAR DIM, SOMCH
DSM – IV Criteria for Dementia Memory Impairment plus
• APHASIA (Deterioration of Language function)
• APRAXIA (inability to Execute Motor function)
• AGNOSIA (inability to Recognise or Naming of Object)
Disturbance in executive functioning
with• Impairment in occupational or social functioning
70% of dementia is Alzheimer’s
10-15% is Vascular dementia
10-15% Lewy Body dementias
5-10% Others
Overall Situation:
Alzheimer’s disease
70 %
Vacular Dementia
15-20%
Lewy Body Dementia
10-15 %
Others 5 %
Classification :
Types :
Dementia Classification:Primary (degenerative) dementiaSecondary dementia
Dementia Types:Cortical dementiaSubcortical dementia
PsudodementiaA group of disease due to functional disease rather than organic dementia• Depression• Hysterical Dementia• Psychogenic amnesia
Causes of Dementia
Primary Degenerative Dementia:•Alzheimer’s Disease
•Frontotemporal dementia
•Dementia with Lewy Body
Secondary Dementia:VITAMIN Deficiency
ENDOCRINE Chronic Infections
Thiamine B1
Hypothyroidism Neurosyphilis
B3 Adrenal deficiency
HIV
B12 Cushing Syndrome
Prions
Hypoparathyroidism
TOXIC Head Trauma:
Neoplastic
DIALYSIS DEMENTIA
Chronic Subdural Heatoma
Primary Brain Tumor
Drug Poisoning
Post Encephalatis
Secondary Brain Tumor
Heavy Poisoing
Normal Pressure Hydrocephalitis
Paraeoplastic
CORTICAL SUBCORTICAL MIXED
Alzheimer’s Parkinson’s Vascular Dementia
Frontotemporal Dementia
Huntington’s disease
Lewy body dementia
CJD Normal pressure hydrocaphalus
Neurosyphilis
SUBCORTICAL
CORTICAL
Memory impairment
moderate Severe
Mathemetical skills
Preserved Impaired
Mood depressed Normal
Motor speed Slowed Normal
Movements abnormal
Common Rare
mutism Absent Present
(REVERSIBLE DEMENTIA
IRREVERSIBLE DEMENTIA
D= Drugs, Delirium Alzhemer
E= Endocrine disorders
Lewy Body dementia
M= Metabolic Frontotemporal Dementia (Picks disease)
E= Emotional Parkinsons disease
N= Nutritional Huntington’s disease
T = Toxic, Tumor, Trauma
Cruze feltd jakob disease
A= Alcohol
IS IT DEPRESSION OR DEMENTIA??
VS
Depression Dementia:
Little effort on tasks
Struggles to complete tasks
Don’t know answers
Attempts answers, but incorrect
Absence of Dyspraxia,
Have Dyspraxias, Agnosias,
No language problem
Language problem
IS IT DELIRIUM or DEMENTIA ??
Is it Dementia??
Is it Depressio
n or
Dementia
Is it Delirium
or Dementia
Is it Alzheimer’
s??
Is There any
Reversable
Cause??
If not Alzheimer’s What is it??
ALZHEIMER’S DISEASE :
video
Alzeimer’s Disease
Loss of cholinergic
neurons
Senile plaques & neurofibrillary
tangels
Glutamate transmission dysfunctiion
30% symptoms
70% Symptoms
Alzheimer’s Staging:
Alzheimer’s
Pathology (Gross) :
Every part of cerebral cortex is involved with relative sparing of occipital pole
Marked Atrophy.
Widened Sulci
Shrinkage of Gyri
Ventricular Dilatation
AD: a progressive CNS disorder)
BrainAtrophy
**Senile Plaque
**Neurofibrillary Tangles
Pathology (HALLMARK)
Pathology of AD (Microscopic)
Pathology of AD (Microscopic)
Pathology of AD (Microscopic)
video2
Cholinergic deficit– progressive loss of
cholinergic neurones
– progressive decrease in available ACh
– impairment in ADL, behaviour and cognition
Hippocampus
Cortex
N. basalis Meynert
Pathophysiology of AD (Biochemical)
ALZHEIMER’S VASCULAR
Onset Incidious Sudden
Risk factors Family history CVD risks
Mental status Recent Memory
Psychomotor slowing
Neuro exam No Focal neuro deficit
Behavioral Delusion, Poor insight
Apathy, Depression
MRI Diffuse /Temporal atrophy
Stroke
ALZHEIMER’S
VASCULAR LBD FTD
Short term Memory Loss
Personality change
Parkinsonism
Prominent Behavior change
Dysphasia Dyspraxia
Labile Mood
Fluctuating Alertness
Expressive Dysphasia
Wandering Preserved Insight
Visual Hallucination
Early loss of insight
DEMENTIA:Common diagnostic strategies:
Clinical : History (from patient, family) Bedside Examination (e.g.
MMSE) Physical Examination
Neuropsychological Assessment. Imaging. Lab Screening for other causes.
History : Nature of the
problem Memory? Behavioral Emotional
Who perceives the problem? Patient? Family?
Tempo of the illness Gradual Fast
Stepwise
Family history
Other medical problems Neurological
(e.g. movement disorder)
Systemic (e.g. thyroid disease, vascular disease)
Examination of Higher Functions
BEDSIDE TESTS :
•MMSE
•CLOCK DRAWING
•ADAS cog (Alzeimer’d disease assesment scale cognitive)•Detailed Psychometry
COGNITIVE FUNCTION
BEHAVIOUR & PSYCHOLOGICAL FEATURES
ACTIVITY OF DAILY LIVING
DEPRESSION
MMSE Neuropsychiatric inventory
Bristol Scale Cornel Scale
Clock Drawing Test
Behave AD AD functional Assesment scale
Geriatric Depression Scale
Seven Minute Screen
Cohen Mansfield Aggression Inventory
Disability Assesment Dementia
Mental Test Score
Mini Mental State Examiation :
Staging of Disease by MMSENormal 27-30Mild 25-26Mild- Moderate 10-24Moderate- Severe 6-9Very Severe <6
Clock Drawing “Draw a clock and set the hands to
ten minutes to two” Marked out of ten e.g.
Perfect 10
Noticable palcement errors of the hand
8
Numbers & clock face not conected
3
uninterruptable 1
Imaging : Structural imaging (CT or MRI )
Exclusion of structural abnormalities Volumetric studies
Functional imaging PET SPECT
In A, MRI shows cortical atrophy
and ventricular enlargement.
In B, PET scan shows reduced glucose metabolism in the parietal lobes bilaterally (blue green) as compared with more normal metabolism in other cortical areas (yellow)
Probable Alzheimer’s Disease
BASELINE TESTS:
Baseline investigations for Dementia:CBC, ESR S. Electrolytes
Calcium, Phosphate Syphilis
Chest X ray HIV
CT, MRI Thyroid Function test
B12, Folate Liver function tests
EEG, ECG Renal Function Tests
Diagnosis Flow Chart:
HistoryMemory = Activity in
Daily Living
Cognitive Screening
Test
MMSE + CLOCK Drawing
Exclede Reversable causes by Baseline
Tests
Neuroimaging
MANAGEMENT OF DEMENTIA
Management :Dementia
Reduce Cognitive Symptoms
Reduce Behaviour Symptoms
Slow disease progression
Delay the Onset of Disease
Behavioral Strategy
Scheduled toileting, prompted voiding for incontinence.
Graded assistance, & positive reinforcement to increase functional independence
Music, esp. during meals, bathing Walking , Light Exercise
Management of Dementia
Supportive treatment Non-pharmacological Pharmacological
Treatment of complications & co-morbidities
Symptomatic Treatment of AD
. The mainstay of symptomatic treatment of AD, so far, is the cholinergic treatment strategies and most widely used, till now, are the Cholinesterase (ChE) inhibitors.
. These agents •Reduce the metabolism of acetylcholine
•Prolonging its action at cholinergic synapses.
Cholinesterase inhibitors: two classes exist for the treatment of Dementia
Class Inhibit
Dual ChE inhibitors
– Rivastigmine Both AChE
– Tacrine and BuChE
Single ChE inhibitors
– Donepezil AChE
– Galantamine
Weinstock, 1999
MEMANTINE NMDA receptor
antagonist Severe AD
Also useful in Vascular Dementia
Improves cognitive function
Improves the daily activity of life.
DELAY OF PROGRESSION:
Duration
Memantine alone 2-3 yearsMemantine + Ch E inhibitors
5-6 years
Ch E Inhibitors alone 1.5 years
Proposed or unregulated drugs which require further studies
Selegeline
Vit-E
Oestrogen
Prednisolone
NSAIDs
Ginkgo biloba
Statins
IVIg
Glycogen syntehtase kinase 3 (GSK 3)
β-secretase inhibitors
γ-secretase inhibitors
α-secretase enhancers
Immunotherapy
ALZEIMER’S VASCULAR FRONTOTEMPORAL
LEWY BODY
DONEPEZIL ChE Inhibitors
No ChE inhibitors
ChE inhibitors
RIVASTIGMIE
HMG CoA SSRI SSRI
GALANTAMINE
Stroke Prevent
Antipsychotics
Memantine
MEMANTINE Memantine Memantine Levadopa
SSRI Antipsychotic
Rivastigmine Cautions
Renal impairment Hepatic impairment Sick sinus syndrome Conduction abnormalities. H/O Asthma or COPD Pregnancy .
Transdermal Patch Technology: Reservoir versus Matrix
Nitti VW, et al Urology. 2006;67:657–64
Drug contained in adhesive layer along with polymer
Smaller and thinner than reservoir patches
Reservoir
Matrix
Drug contained in separate layer, with a rate-controlling membrane
Matrix DiffusionControlled Patch
Release Liner
Drug + Polymer + Adhesive
Backing
Rate-ControlledReservoir/Membrane Patch
Dermal Layer
Backing
DrugReservoir
Release Liner Adhesive Layer
Exelon Transdermal 9.5 mg/24 h Patch
Where to Apply Exelon Patch
Apply to: Upper and lower back
Upper arm Chest
The skin should be clean, dry and hairless before the patch is applied
Normal daily activities, such as bathing, are permitted
Exelon Transdermal Patch: Smooth Continuous Delivery Through the Skin
Exelon 6 mg BID capsule
Exelon 9.5 mg/24 h patch
Pla
sma
conc
entr
atio
n (n
g/m
L)
Exelon 9.5 mg/24 h patch delivered comparable average concentrations (AUC) to those provided by an oral dose of 6 mg BID (12 mg/day)*
* Model-predicted analysis based on actual patient data corrected for body weight.
0
5
10
15
20
25
0 6 12 18 24
Time (hours)
Starting transdermal ChEI therapy
Rivastigmine 4.6 mg/24 h
patch
Rivastigmine 9.5 mg/24 h
patch
Starting dose Target dose
4 weeks
One-step dose increase
When to Refer to SPECIALIST:
•Early Onset
•Presentation Atypical
•Severe Parkinsonism
•Focal Finding
•Behaviors seeming to be Untreatable
Thank You