T2: Safe Med Use (CH 17) Flashcards
There is an increased risk of interactions and __ __ in older adults when it comes to medications.
adverse reactions
Medications act ___ in older adults; and require careful dosage adjustment and __.
differently
monitoring
___: refers to the absorption, distribution, metabolism, and excretion of drugs
Pharmacokinetics
___: refers to the biologic and therapeutic effects of drugs at the site of action or on the target organ
Pharmacodynamics
The high prevalence of health conditions in the older population causes this group to use a large number and variety of ___
medications
Most common medications used:
cardiovascular agents, antihypertensive, analgesics, antiarthritic agents, sedatives, tranquilizers, laxatives, and antacids
Taking more than one drug increases the risk of __ interactions.
drug-food
Pharmacokinetics refers to the __, __, __, and ___ of drugs.
absorption
distribution
metabolism
excretion
The renal system is primarily responsible for the body’s ___ functions, and among its activities is the __ of drugs.
excretory
excretion
Changes in what 4 things can modify DISTRIBUTION of a drug?
- circulation
- membrane permeability
- body temperature
- tissue structure
Factors altering absorption:
- Route of administration
- Concentration and solubility of drug
- Diseases and symptoms
Difficult to predict drug __
distribution
___ and hypoalbuminemia decrease drug distribution
Dehydration
CONDITIONS decreasing metabolism of drugs: (4)
-Dehydration, hyperthermia, immobility, and liver disease
___ is the most common organ to deal with metabolism.
Liver
Extended biological __: requires close evaluation of drug clearance
half-life
Detoxification and conjugation of drugs is ___
reduced
__ influences drug detoxification and excretion
Liver
Refers to biologic and therapeutic effects of drugs at the site of action or targeted organs
Altered Pharmacodynamics
There is increased myocardial sensitivity to ___.
anesthesia
There is increase central nervous system receptor sensitivity to __, alcohol, and __.
narcotics
bromides
Risk of adverse drug reactions is higher in older adults related to altered __ and __.
pharmacokinetics and pharmacodynamics.
Mental ___ is often an early sign of adverse reaction to many medications.
dysfunction
This criteria included drugs that were inappropriate to use in general and drugs that were inappropriate to use in the presence of specific conditions. (Identification of drugs that carry high risks for older adults)
Beer’s criteria