Geriatrics Flashcards
Why are people getting older?
Increased resources
Better economic environment
Screening and diagnosis improved
Better outcomes following majorr events
Compare primary and secondary ageing.
Primary = caused by being biologically old e.g osteoarthritis and secondary = consequence of primary ageing e.g reduced mobility from OA
What is the stochastic theory of ageing?
Random cumulative damage e.g from oxidative stress and micro trauma
What is the programmed theory of ageing?
Predetermined from changes in gene expression during various stages
What happens with inter-individual variability with age?
Increases
Why does serum creatinine stay roughly the same?
creatinine clearance goes down and you have less muscle mass
What happens to blood pressure with age?
SBP tends to increase
DBP peaks around 60 and then starts to drop
Why is there more side effects from antihypertensives in those over 60?
SBP tends to increase
DBP peaks around 60 and then starts to drop
What happens to CO with age in general?
Gets worse
What happens to lung capacity with age?
Total lung capacity stays the same but vital capacity reduces over time
Discuss frailty and homeostasis?
Frailty = progressive dyshomeostasis
Define frailty.
Susceptibility state that leads to a person being more likely to lose function in the face of a given environmental challenge
What are “frailty syndromes”?
Falls, delirium, immobility, incontinence
Why might elderly be unable to compensate for a change in BP?
problems with carotid sensitivity (OVER OR UNDER), sympathetic nervouse system may be less effective (e.g due to meds), heart less able to pick up rate
What are the consequences of frailty for thermoregulation?
reduced peripheral vasoconstriction, don’t sweat as much, reduced metabolic heat production, little change in basal body temperature, smaller increase in CO, less redistribution of blood flow from renal and splanchnic circulations
What is “social” dyshomeostasis?
Difficulty caused by environmental insults e.g social
How does hyperthyroidism presentation differ in people with frailty?
Depression Cognitive impairment AF Muscle weakness Delirium Falls Immobility Incontinence
What are two main implications of an ageing population?
Multimorbidity Frailty
What is frailty?
A susceptibility state which is the end result of acquired problems. Overlaps multi morbidity and disability
What is ageing?
Progressive accumulation of damage to a complex system resulting in loss of system redundancy
Define frailty.
A reduced ability to withstand illness without loss of function
How do you identify someone with frailty?
Frailty index
Fried criteria
“Frailty syndromes”
HIS ‘Think Frailty’
Clinical frailty scale
What is the Fried criteria?
3 of 5 of:
Unintentional weight loss Exhaustion Weak grip strength Slow walking speed Low physical activity
Name the frailty syndromes.
Falls
Immobility
Delirium
Functional loss