Alzheimer's dementia Flashcards
Dementia is a n_________ disorder with a decline in c_____ over time
neurodegenerative
cognition (memory, judgement, language)
What is a breakdown product of amyloid precursor protein (APP)?
Beta amyloid plaques
Around what % of dementia is Alzheimer’s?
60%
In Alzheimer’s, there are beta amyloid plaques and t__ n_______ t_____ in cerebral cortex
tau neurofibrillary tangles
In Alzheimer’s, there is increased cortical s____ and brain atrophy and decreased ___ (neurotransmitter)
scarring
ACh
What are risk factors for Alzheimer’s?
Down’s syndrome (inevitable, APP gene mutation)
ApoE4 allele in familial Alzheimer’s with late onset
What are symptoms of Alzheimer’s?
Agnosia (can’t recognise things)
Apraxia (can’t do basic motor skills)
Aphasia (can’t talk as well as normal)
True or false: there is a step-wise decline in cognitive function in Alzheimer’s?
False, steady decline.
Stepwise decline in vascular dementia
How do you diagnose dementia?
Mini mental state exam (MMSE) out of 25
Brain MRI shows cortical atrophy
What does a score of over 25/30 mean in MMSE?
No dementia, normal
What MMSE score relates to impaired cognitive function?
18-25 / 30
What MMSE score correlates to severely impaired cognition?
Under 17
How is dementia managed?
social stimulation
Exercise
What medication is given for Alzheimer’s dementia?
Anticholinesterases / ACh-ase inhibitor like donepazil or rivastigmine