Ch. 9 (Safe Medication Use) Flashcards
What is the listing of drugs taht carry high risks for older adults and criteria for potentially inappropriate medication use in older adults?
beers criteria
What refers to the absorption, distribution, metabolism, and excretion of drugs?
pharmacokinetics
What refers to the biologic and therapeutic efects drugs at the site of action or on the target organ?
pharmacodynamics
Do older adults have a decreased or increased risk for adverse reactions with medication use?
increased risk
What are factors that alter absorption of medications?
- route of administration (IV = fastest, orally = slowest)
- concentration & solubility of drug
What refer to the time necessary for half of a drug to be excreted from the body?
biological half-life
Can dehydration decrease or increase drug distribution?
decrease
What refers to the use of multiple medications?
polypharmacy
What organs help with medication excretion?
- kidneys
- liver
What are some general factors regarding adverse medication reactions in older adults?
- S&S differ
- reaction takes longer to become apparent
- may show ever after med. discontinued
- may develop suddenly (even after long-term use)
What is often an early adverse medication reaction in older adults?
mental dysfunction
may be subtle changes
What is the most common route to administer drugs?
oral administration
When administering IM drug in a immobile limb, will the absorption rate be reduced or increased?
reduced
will be on exam
What can excessive use or not finishing a complete dose of antibiotics lead to?
antibotic-resistant bacteria
What are the side effects of antibiotics?
- diarrhea
- n/v
- anorexia
- allergic reactions
What are signs of digitalis toxicity?
- bradycardia
- diarrhea
- anorexia
- n/v
- abdominal pain
- delirium
- hallucinations
- aphasia
check digoxin lvls if suspect toxicity
What education do we provide to patients about antihypertensive medications?
- some can cause significant hypotension initially
- advise pt to change positions slowly to prevent falls