ch 9 - pharmacokinetics Flashcards
Study of the movement
and actions of a drug in the body
pharmacokinetics
meds that bind strongly to plasma protein albumin (5)
- ceftriaxone
- ibuprofen
- naproxen
- valproic acid
- warfarin
the process wherein a
pharmaceutical substance can be
eliminated from the body more
easily
biotransformation
how does aging affect biotransformation/metabolism
- decreased liver size
- slower speed metabolism
- med remains in system longer
- increased risk toxicity
what should you assess in older adults to prevent drug toxicity
creatinine clearance rates (GFR)
how does aging affect absorption of meds
- reduced saliva
- delayed stomach emptying
- slowed intestinal motility
- presbyphagia
how does aging affect excretion of meds
-reduced GFR and creatinine clearance
taking how many meds increases risk for morbidity and mortality with drug interactions
5+ meds
potential consequences of polypharmacy
- drug interactions
- difficulties with compliance
- urinary incontinence
- falls
- cognitive impairment
what herbs should not be taken with anticoagulants/warfarin (7)
- echinacea
- garlic
- gingko
- ginseng
- green tea
- red yeast rice
- st johns wort
med combos with high potential for adverse interactions (4)
- ACE and potassium sparing diuretics
- ACE/ARBs and septra
- macrolide antibiotics and calcium channel blockers/digoxin
- warfarin and antibiotics/NSAIDs
3 most common errors with meds and enteral feeding tubes
- incompatible route
- improper prep
- improper admin
3 meds that are high risk meds for adverse drug reactions in older adults
- warfarin
- digoxin
- insulin
3 common aging issues with med use
- polypharmacy
- adverse drug reactions (ADRs)
- interactions
A study that identified potentially
inappropriate medications for use in the
older adult
beers criteria