ATI LPN
ATI LPN Pharmacology Quiz Questions
Extract:
Question 1 of 5
Which of the following differentiates a bacteriostatic drug from a bactericidal drug?
Correct Answer: D
Rationale: Bacteriostatic drugs prevent bacterial proliferation, allowing the immune system to clear the infection, while bactericidal drugs directly kill bacteria. Spectrum or mechanism (e.g., protein vs. nucleic acid synthesis) varies by drug, not by static vs. cidal classification.
Question 2 of 5
Which adverse effect unique to vancomycin is caused by histamine release?
Correct Answer: C
Rationale: Red-man syndrome is a histamine-mediated reaction to rapid vancomycin infusion, causing flushing, rash, and pruritus. It is not an allergy but a direct drug effect. Discoloration is associated with rifampin, while ototoxicity and nephrotoxicity are vancomycin side effects unrelated to histamine.
Question 3 of 5
Children younger than 9 years should not be given tetracyclines because:
Correct Answer: D
Rationale: Tetracyclines deposit in developing teeth, causing permanent discoloration in children under 9. They can also affect bone growth, but tooth discoloration is the primary concern. Dehydration and photosensitivity are not age-specific tetracycline issues.
Question 4 of 5
A nurse is preparing to administer ondansetron 4 mg IM stat. The amount available is ondansetron for injection 2 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 2
Rationale: Using Volume (mL) = Dose (mg) ÷ Concentration (mg/mL), for a 4 mg dose and 2 mg/mL concentration, Volume = 4 ÷ 2 = 2 mL, a whole number as required.
Question 5 of 5
The nurse teaches a patient to self-administer his insulin. How can the nurse best evaluate whether the patient understands the instruction?
Correct Answer: D
Rationale: Observing the patient perform insulin administration confirms correct technique and understanding, allowing immediate correction of errors. Feelings, repeating information, or listing steps are less direct assessments.