Basic Pharmacodynamics Flashcards
(10 cards)
What is pharmacodynamics?
The study of what the drug does to the body, including the mechanism of action and effects.
What is a receptor in pharmacodynamics?
A protein target on or in a cell where a drug binds to exert its effect.
What is an agonist?
A drug that activates a receptor to produce a biological response (e.g., salbutamol).
What is an antagonist?
A drug that blocks a receptor to prevent a biological response (e.g., naloxone).
What does selectivity mean in drug action?
The degree to which a drug acts on a specific receptor without affecting others.
What is a dose-response relationship?
The relationship between the amount of drug given and its effect.
What is the therapeutic window?
The range between the minimum effective dose and the toxic dose.
What is drug tolerance?
A decreased response to a drug over time, requiring a higher dose for the same effect.
What is tachyphylaxis?
A very rapid development of tolerance after repeated doses.
Why is pharmacodynamics important for V300 prescribers?
It helps with safe drug selection, understanding effects, avoiding side effects, and individualizing treatment.
