Chapter 3 - Building a Foundation Flashcards
is the way the body deals with medications
Pharmacokinetics
is what the drug does to the body
Pharmacodynamics
are the components on the cell surface that can react with drugs, viruses, or other chemicals
Receptor sites
is where the safest and most effective treatment will occur
Therapeutic Window
; time it takes for half of the drug to be eliminated from the plasma
Half-Life
is a biological condition that occurs when the body adapts to a substance after repeated administration. Over time, higher doses are required to produce the same initial effect.
Tolerance
is a drug that attaches to a receptor and blocks the normal action of the cell
Antagonist
explains why PO medications are often administered at a higher dose then parenteral medications
ie. If you give Acetaminophen PO, before it reaches the bloodstream it gets broken down by enzymes and bound to protein, so the little bit of drug that does reach the blood stream is bound and un-active, not creating much therapeutic effect.
where as giving IV = immediate entrance in blood = strong therapeutic effect
First Pass Effect
Sometimes we need a ‘jump start’ in order to reach the therapeutic effect of a drug, which is called a ______ ______
Loading dose
a drug that attaches to a receptor and mimics the normal action of the cell
Agonist
taking multiple medications concurrently is referred to as
Polypharmacy
refers to the amount of medication required to produce the desired effect
Potency
is the binding strength of a medication
Affinity
is the ability of a medication to produce a desired or intended result
Efficacy
studies the changes in enzyme structure and function based on genetic presentation
Pharmacogenetics