Geriatrics Flashcards
fat is what in elderly
increased
bone, water, and muscle are what in elderly
decreased
what generally occurs with the CV system and the CNS in the elderly
functional decline
kidney nephron degeneration and decreased renal BF leads to
decline in renal function
is the respiratory system normal in elderly?
normal at rest, compromised under stress
multifactorial health conditions that occur when accumulated effects of impairment in multiple systems render an older person vulnerable to situational challenges
geriatric syndromes
excess vulnerability to stressors which reduce ability to maintain or regain homeostasis after a destabilizing event
frailty
hallmark indicators of frailty
weight loss, self reported exhaustion, low energy expenditure, slow gait, weak grip strength
common geriatric syndromes (9)
dementia, delirium, urinary incontinence, falls, dizziness, syncope, malnutrition, pressure ulcers, sleep problems
gastric ph in elderly is
higher (less acidic)
how is oral bioavailability affected
reduced 1st pass- may inc bioavailability of high ER drugs
drying of skin affects absorption of transdermal products how?
less absorption of hydrophilic drugs
what syndrome in elderly affects absorption of patches such as fentanyl
cachexia
inc fat and dec water affects drug distribution by
inc dist of lipophilic
dec dist/higher conc of hydrophilic
decreased lean body mass affects distribution and causes
increased drug conc in blood
which phase 1 metab processes are decreased
hydroxylation, demethylation
how is the liver changed to affect metab
decrease mass and volume
is phase 2 metab affected?
reduced glucuronidation in very old
which classes may not metabolize well in elderly (5)
benzos, nsaids, ccbs, antidepress, some antiepileptics
which drugs elimination are affected by renal function decline (6))
ace, hydrophilic BB, -cyclovir, aminoglycosides, vanco, some psych meds, etc
4 tools used to identify PIMs
BEers, start/stopp, med appropriateness index, anticholinergic risk scale
anticholinergic meds that may not be safe (5)
oxybutynin, amitriptyline, paroxetine, atropine, tolterodine, etc
effects of anticholinergics
limitations in physical/cog function, increased dementia risk
4 main classes “not safe” for elderly
anticholinergic, benzos, antidepressants, nsaids