Pharmacology Flashcards
pharmacology
study of preparation, uses and effects of drugs
drug
any chemical substance used in the treatment, cure, prevention or diagnosis of disease
any drug used to enhance physical or mental wellbeing
An ideal drug is …
safe - more benefits than risks
selective - want it to treat disease, with little effect as possible on human cells
effective - successful at addressing the health issue
5 “desirable” attributes of a drug:
*no single drug has all these attributes
reversible - reverse the adverse effects of what patient is experiencing (i.e. patient has HBP, want drug to lower BP)
predictable - drug have relatively same effect on all patients
no adverse effects - all drugs have some negative effects, but we want to minimize them
no interactions - when two drugs act together, they can either significantly increase or decrease the action of drug.
cheap + simple - affordable and easy to administer
Goal of pharmacology:
maximum benefit to patient
minimum harm to patient
6 factors determine strength of drug response (how much drug will make it to site):
dosage
route of administration
timing in between doses
unique patient differences
pharmacokinetics (ADME) - (how drug moves through body)
pharmacodynamics (effects of drug on body and its mechanism of action)
ADME (pharmacokinetics)
absorption
distribution
metabolism
excretion
-how each of these processes is affected is what manages how much of a drug makes it to the site of action
Nurse’s Role in Pharmacology
- assessment before, during and after administering drug
- evaluating safety drug for each individual client
- minimizing and evaluating adverse effects
- educating client and family
5 “Rights” Medication Administration
ensures no errors are made when giving medication
- right drug
- right patient
- right dose
- right route of administration
- right time
5 Additional Strategies Applied to “Rights” to make sure medications is given safely:
documentation
assessment
evaluation
patients right to education
patients rights refusal