AMCA Pharmacology Flashcards
6 cards from real AMCA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 AMCA Pharmacology flashcards as text
What term describes a patient's decreased response to a drug after repeated use, requiring higher doses for the same effect?
Answer: Tolerance
Drug tolerance occurs when the body adapts to a medication over time, reducing its effectiveness at the original dose.
Which class of antibiotics works by inhibiting bacterial cell wall synthesis?
Answer: Penicillins
Penicillins inhibit bacterial cell wall synthesis by blocking enzymes needed to cross-link peptidoglycan chains.
A patient is prescribed a medication with a narrow therapeutic index. What does this mean?
Answer: The difference between therapeutic and toxic doses is small
A narrow therapeutic index means the effective dose is very close to the toxic dose, requiring careful monitoring.
Which medication is the antidote for acetaminophen (Tylenol) overdose?
Answer: N-acetylcysteine (NAC)
N-acetylcysteine replenishes glutathione stores in the liver, preventing hepatotoxicity from acetaminophen overdose.
What is the primary action of beta-blocker medications?
Answer: Block beta-adrenergic receptors to reduce heart rate and blood pressure
Beta-blockers bind to beta-adrenergic receptors, reducing the effects of epinephrine and lowering heart rate and blood pressure.
Which drug interaction occurs when one drug reduces or eliminates the effect of another drug?
Answer: Antagonism
Antagonism occurs when one drug opposes or blocks the action of another drug, diminishing its therapeutic effect.