Dementia/congenital impairment Flashcards
What is dementia?
Global impairment of cognitive function and personality without impairment of consciousness
When is dementia consider early onset?
Before the age of 65
How long do symptoms of dementia have to be present for a diagnosis of dementia to be made?
6 months
What is the most common cause of dementia?
Alzheimer’s disease
What drugs may be used to slow the progress of Alzheimer’s disease?
ACh inhibitors
What drugs can cause a Parkinsonian reaction in Lewy Body dementia?
Antipsychotics
Name the dementia
Uneven or stepwise deterioration in cognitive function
Vascular
Name the dementia
Spontaneous motor signs of Parkinson’s (rigidity/ bradykinesia/ tremor)
Lewy body
Name the dementia
Evidence of CVD/ stroke
Vascular dementia
Name the dementia
Early decline in social and personal conduct ( disinhibition/ tactless)
Frontotemporal (picks)
Name the dementia
Decreased speech output, echolalia, perseveration, mutism
Front temporal
Gradual onset with cognitive decline, other dementia are excluded
Alzheimer’s
Transient disturbances of consciousness with recurrent visual hallucinations
Lewy body
What is agnosia?
Can’t name objects
What are the main differences between delerium and dementia?
Delerium is an acute onset with a fluctuating progression and there is impaired consciousness where in dementia there is no impaired consciousness
Also I delerium there is perceptual disturbance and impaired sleepwalker cylcle - not so much in dementia
What is a perceptual disturbance?
Misinterpretation
Illusion
Hallucination
A scale between the 3
What variable are tested in a cognitive function test?
Orientatation Attention and concentration Memory Language Construction
What is a catastrophic reaction?
Reaction to a test where patient may get upset and refuse to go on with the test
What is the prevalence if dementia?
What is the prevalence in those over 90?
1 in 85
35%
What is the life expectancy of someone with Alzheimer’s?
5-8 years
What is pseudo dementia?
When you have really severe depression that starts to cause dementia
What is nominal dysphasia?
Can describe object but not name it
How severe is the dementia that is sufficient to interfer with ADLs but can still live independently?
Mild
Define the 4 ICD symptoms of dementia
Decline in memory
Decline in cognitive functions (judgement, thinking, planning)
Decline in emotional control/ behaviour
Damage to higher cortical functions (aphasia, agnosia, apraxia)
Name some other causes of deme tail other than the obvious 4
CJD Huntingtons HIV Parkinson's Alcohol Vit B12 def
What are pick cells?
What are pick bodies?
Ballooned neurones
Tau/ubiquitin protein bodies
What are the three types of fronto temporal dementia?
- behavioural variant
- progressive non fluent aphasia
- semantic
What is behavioural variant FTD?
Frontal love involvement predominates leading to changes in personality/ behaviour
What is progressive non-fluent aphasia?
Which love predominates?
Temporal lobe leading to loss of language skills either in production or understanding
What is fronto temporal semantic dementia?
Loss of semantic memnoryy - knowledge of things and concepts
Is someone with fronto temporal dementia likely to have insight?
No
What test can you use to test for perseveration?
Rhythmic tapping tasks - I tap once you tap twice
Why would a CT show is frontotemporal dementia?
Frontotemporal atrophy
Also “knife blade atrophy”
How does the Lewy body dementia differ with picks histology ally
Lewy bodies and plaques but few fibrillary tangles in Lewy body
Where are the Lewy bodies in Parkinson’s and LBD?
LBD - cortex, hippocampus
Parkinson’s - midbrain/ substansia nigra
What is the difference between 1) “dementia with Lewy bodies” and 2) “Parkinson’s disease dementia”?
You have movement disorder then
Cognitive impairement
1) within a year
2) more than a year later
What are Lewy bodies?
Deposits of protein (alpha synuclein) within nerve cells
Is Lewy body dementia more common in males or females?
Females
What are the three core features of Lewy body dementia?
Fluctuating cognition
Motor features of Parkinson’s
Visual hallucinations
Name the dementia
Recurrent falls, syncope, LOC
Lewy body dementia
What are the five As of Alzheimer’s?
Amnesia Aphasia Agnosia Apraxia Associated behaviours - bpsd
What does bpsd stand for?
Behavioural and psychological symptoms in dementia
Give examples of cortical dementia?
Alzheimer’s
Vascular
Frontotemporal
Give examples of sub cortical dementia
Parkinson’s
Huntingtons
Progressive supra nuclear palsy
What is the difference between cortical and sub cortical dementia?
??
Cortical often has focal cognitive impairment - memory, language, problem solving
Sub cortical - psychomotor slowing
In Alzheimer’s what are present in he cortex and hippocampus?
Neurofibrilary tangles
Amyloid plaques
What genetic factors predispose to late onset Alzheimer’s?
Appoliprotein E4 (ApoE)
What genetic factors influence early onset Alzheimer’s?
What is the pattern of inheritance?
Prenesillin 1 and 2
Autosomal dominant
What are the risk factors for vascular dementia?
Hypertension
High cholesterol
Diabetes
Smoking
Normal pressure hydrocephalus can cause dementia, what features does this have?
Patchy dementia
Marked mental slowness apathy
Wide based gait
Urinary incontinance
In an old person with memory problems what might you want to rule out?
Depression - severe depression can cause memory loss
Name some anticholinesterases
Donepezil, rivistigmine, galantamine
When should anticholinesterases be used?
In mild to moderate Alzheimer’s/ Lewy body
What is memantine?
Modulates glutamine transmission
What is memantine used for?
Moderate to severe Alzheimer’s
What has a worse prognosis Alzheimer’s or vascular?
Vascular
What is the average length of delerium?
7days
What drugs can be used in Alzheimer’s dementia?
Acetylcholinesterase inhibitors
Memantine
How does memantine work?
Glutamate receptor antagonist
Name some ACh esterase inhibitors
Donepezil, galantamine, rivistigmine
What is there a risk of if a person is on both Donepezil and an antipsychotic?
Neuroleptic malignant syndrome
What factors assessed when assessing cognition?
Orientation (time, place, person) Concentration/ attention Memory Language Construction
What are the 5 A’s of Alzheimer’s?
Amnesia Apraxia Aphasia Agnosia Associated behaviours / psych conditions
What groups of people is Alzheimer’s screened for?
Down’s syndrome
Post stroke
Parkinson’s disease