Exam 2: the old farts Flashcards
what are 4 components that make up frailty?
-chronic malnutrition
-sarcopenia
-decreased metabolic rate and activity
-decreased appetite
frailty + stressor event = _____ & ______
falls and delirium
what are 5 phenotypes model indicators of frailty?
1- weight loss
2-self-reported exhaustion
3- low energy expenditure
4- slow gait speed
5- weak grip strength
Dementia onset, duration, cause and course
-slow and gradual, with an uncertain begining point
-usually permanent
-usually cause by a chronic brain disorder (alzheimers, lewy body dementia, vascular dementia)
-slowly progressing
Dementia effect at night, attention, level of consciousness, & orientation to time and place
-often worse at night
-A & LOC: unimpaired until dementia has become severe
-impaired
dementia use of language, memory & need for medical attention
-sometimes difficulty finding the right word
-lost memory, especially for recent events
-required medical attention but less urgent
Delirium use of language, memory & need for medical attention
-slow, often incoherent + inappropriate
-varies memory loss
-IMMEDIATE medical attention
Delirium effect at night, attention, level of consciousness, & orientation to time and place
-almost always worse at night
-attention is greatly impaired
-LOC & time and place: varies
Delirium onset, duration, cause and course
-sudden, with a definite beginning point
-days to weeks, although it may be longer
-almost alway due to another condition (infection –> UTI, dehydration, use or withdrawal of certain drugs)
-usually reversible
what drugs are not metabolized as well due to dec in hydroxylation?
-alprazolam
-midazolam
-quinidine
-propranolol
-triazolam
-r-warfarin
what drugs are not metabolized as well due to decrease in demethylation?
-imipramine
-sertraline
-verapamil
-therophylline
active metabolites with detrimental effects in excretion:
-norpropoxyphene
-hydroxyaminodapsone
-normeperidine
gastrointestinal absorption changes in the elderly
-unchanged passive diffusion and no change in bioavailability for most drugs
-dec active transport and dec F for some drugs
-dec first pass metabolism, inc F for some drugs and dec F for some prodrugs
distribution changes in the elderly
-dec volume of distribution and inc plasma concentration of water-soluble drugs
-inc volume of distribution and inc terminal disposition t 1/2 life for soluble drugs
hepatic metabolism changes in the elderly
-dec clearance and inc t 1/2 life for some drugs with poor hepatic excretion (capacity-limited metabolism). Phar 1 metabolism may be affected more than phase II
-dec clearance and inc T 1/2 life for drugs with high hepatic extraction ratios (flow-limited metabolism)
renal excretion changes in the elderly
-dec clearance and inc T 1/2 life for renally eliminated drugs and active metabolites
anticholinergic side effects: vision, oral cavity & GI
V: impaired ALD, falls and accidents
OC: decline in nutritional status, increased risk of infection, worsened communication
GI: decline in nutritional status, worsening of disease (constipation), anxiety and pain
anticholinergic side effects: Cardio, urinary tract & CNS
C: worsening of disease, anxiety
UT: incontinence, infection, loss of independence
CNS: cognitive dysfunction, impaired ADL
Anticholinergic: muscle relaxants
-cyclobenzaprine
-methocarbamol
-carisoprodol
-oxybutynin
anticholinergic TCAs
amitriptyline
anticholinergic antispasmodics
-dicyclomine, hyoscyamine, propantheline
anticholinergic antihistamines
-diphenhydramine
-chlorpheniramine
-cyproheptadine
-hydroxyzine
-promethazine
benzodiazepine use in the elderly leads to an increased risk of:
-cognitive impairment, delirium, falls/fractures & motor vehicle crashes
–> MAY be appropriate for seizure disorders, rapid eye movement sleep behavior disorder, benzo withdrawal;, ethanol withdrawal, severe generalized anxiety disorder and periprocedural anesthesia
NSAID: GI toxicity in elders
-ulcer risk 4-5x nonusers
-~4 fold increase mortality related to PUD
-highest risk early
-risks increase ~4% per year of age > 65