deltamed Flashcards
Define frailty
multidimensional syndrome characterised by lack of physiological reserve
- present in 10% of those over 65
Frailty scale
Rockwood scale
Fried scale
What is frailty a risk factor for?
death
functional decline
requirement for care
falls
poor outcomes from surgery
poor outcomes from ICU
MMSE
- score for dementia
- sens. and spec.
<24
specific but not sensitive
AD prevention
physical activity, cognitive stimulation, social interaction
manage vascular risk factors
AD pathophysiology
Amyloid plaques + Tau protein mediated neuronal injury
- shrinking of hippocampus
Genetics of AD
Mutations:
Amyloid precursor protein - Chr 21
Presenilin 1 - Chr 14
Presenilin 2 - Chr 1
Down syndrome
Apolipoprotein E (E4 allele) (late onset)
FTD subtypes
Behavioural subtype
Semantic dementia (fluent)
Primary progressive aphasia (nonfluent)
Motor subtypes (MND, PSP, CBD)
FTD symptoms
personality and social conduct impairment
lose empathy
disinhibition, perseveration
abulia, apathy
Memory relatively well preserved
Dementia with Lewy Bodies
- protein
- typical onset and progression
- typical features
alpha-synucleinopathy
rapid onset with progressive decline over 1-4 years
changes in attention, visual hallucination, REM sleep behaviour disorder, parkinsonism
Vascular dementia
- diagnostic features, progression
- typical symptoms
Evidence of vascular disease on imaging, stepwise progress
inattention and poor executive function
Cholinesterase inhibitors
- use
- NNT
- effects
- maximal response
use in mild-mod AD
NNT 10
maximal response at 6 months
may improve or delay onset of adverse behaviour and delay time to institutionalisation
Cholinesterase inhibitors
- side effects
GIT - nausea, diarrhoea, anorexia
sleep disturbance
bradycardia
exacerbate asthma
Memantine
- MOA
- target demographic, PBS
- precautions
NMDA receptor antagonist
moderate to severe AD or Vascular dementia
MMSE 10-14
- risk of epilepsy (dont use in previous seizure disorder)
Aducanumab
- MOA
- adverse events
MAB to amyloid
cerebral oedema and microhaemorrhages