AMCA Pharmacology Flashcards
7 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 7 AMCA Pharmacology flashcards as text
Which drug classification is most commonly associated with the risk of Stevens-Johnson syndrome?
Answer: Sulfonamide antibiotics
Sulfonamide antibiotics (sulfa drugs) are among the most common causes of Stevens-Johnson syndrome, a severe skin reaction.
A patient is prescribed warfarin. Which vitamin directly antagonizes warfarin's mechanism of action?
Answer: Vitamin K
Vitamin K is required for the synthesis of clotting factors that warfarin inhibits, so it directly antagonizes warfarin's anticoagulant effect.
Which of the following is the antidote for acetaminophen overdose?
Answer: N-acetylcysteine
N-acetylcysteine (NAC) replenishes glutathione stores and prevents liver damage from toxic acetaminophen metabolites.
A medication labeled 'PRN' should be administered:
Answer: Only as needed by the patient
PRN (pro re nata) is a Latin term meaning 'as needed,' so the medication is given only when the patient requires it.
Which electrolyte imbalance is a major concern when administering loop diuretics such as furosemide?
Answer: Hypokalemia
Loop diuretics increase urinary excretion of potassium, placing patients at risk for hypokalemia.
Which medication is a proton pump inhibitor (PPI) used to reduce gastric acid secretion?
Answer: Omeprazole
Omeprazole is a proton pump inhibitor that irreversibly blocks the H+/K+ ATPase enzyme in the stomach lining.
A Schedule II controlled substance differs from a Schedule III substance primarily because Schedule II drugs:
Answer: Have a higher potential for abuse and dependence
Schedule II drugs have a high potential for abuse that may lead to severe psychological or physical dependence, while Schedule III drugs have a lower abuse potential.