pharmacology Flashcards
explains what a drug does to the body, how the drug works; cell/organ/system effect, side effects, effective against disease
pharmacodynamics
explains what the body does to a drug; how drug is absorbed into the blood, distributed in the body, metabolized, and excreted from the body
pharmacokinetics
a ligand that initiates a cellular response by binding to a receptor
agonist
ligand with no effect on cell function, as it blocks other ligands from the receptor; also called blockers or inhibitors
antagonist
the level of attraction between a drug and receptor. doesn’t predict the magnitude of activity or cell response
affinity
the absolute number of drug molecules required to produce a given pharmacologic effect
potency
describes if the drug works, if it achieved the intended effect for which it was prescribed
efficacy
term used to describe individual response differences between patients
variability
ratio of toxic dose for 50% of patients to effective dose for 50% of patients
therapeutic index
two similar acting drugs act to produce the sum of their individual effects
addictive drug interactions
two unalike drugs produce a greater effect than the sum of their individual effects
synergistic drug interaction
an effect of one drug is multiplied by another drug lacking that effect
potentiation
the effect of one drug is decreased by another drug
antagonism
fast affecting drug routes
IV, inhalation, sublingual
slow affecting drug routes
oral, subq, IM
can significantly decrease a drug’s effect; first pass effect
liver
no gastric issues, huge lung surface area, high perfusion, no first pass effect, rapid onset of action, can produce a bolus effect of drug to the brain
inhalation
no gastric issues, high vascularity, intermediate onset of action, no first pass effect, invasive, limited by perfusion rate
intramuscular
no gastric issues, rapid onset, no first pass effect, high level of control over drug concentration in blood, invasive
IV
ibuprofen, indomethacin, and naproxen
nonselective COX inihbitor
celecoxib and meloxicam
COX2 selective inhibitors
< 300 mg per day of Aspirin
reduce platelet aggregation
600-650 mg per day of Aspirin
analgesic effect
45 mg/kg/ day of apsirin
anti-inflammatory effect