NUR 6011/NUR6011 Exam 2 V2 | Advance
Pharmacology Q&A with Rationale |
William Paterson University
1. A patient with a history of penicillin allergy is prescribed a first-generation cephalosporin.
What is the primary concern for the nurse practitioner?
A. Immediate development of nephrotoxicity
B. Cross-reactivity between penicillins and cephalosporins
C. Potentiation of the anticoagulant effect of warfarin
D. Rapid development of bacterial resistance
Correct Answer: B
Expert Explanation: Cephalosporins and penicillins share a common beta-lactam ring
structure which can lead to cross-sensitivity. Although the risk is lower with newer
generations, first-generation cephalosporins pose the highest risk of cross-reactivity. The
practitioner should carefully assess the nature of the previous penicillin reaction before
prescribing.
2. Which teaching point is most important for a patient starting a course of Tetracycline?
A. Take the medication with an antacid to prevent GI upset
B. Take the medication with a full glass of milk for better absorption
C. Avoid direct sunlight and wear sunscreen due to photosensitivity
,D. Stop the medication as soon as symptoms resolve
Correct Answer: C
Expert Explanation: Tetracyclines are known to cause significant photosensitivity
reactions in patients. Patients should be educated to avoid sun exposure and use protective
clothing or sunscreen while on this therapy. Taking the medication with calcium-containing
products like milk or antacids actually decreases its absorption significantly.
3. What is the mechanism of action of Macrolide antibiotics like Erythromycin?
A. Inhibiting bacterial cell wall synthesis
B. Inhibiting protein synthesis at the 50S ribosomal subunit
C. Disrupting the bacterial cell membrane
D. Inhibiting DNA gyrase and topoisomerase IV
Correct Answer: B
Expert Explanation: Macrolides work by binding to the 50S ribosomal subunit of
susceptible bacteria. This action prevents the translocation step of protein synthesis,
effectively inhibiting bacterial growth. Because they inhibit growth rather than killing the
bacteria outright, they are generally classified as bacteriostatic.
4. A patient taking Ciprofloxacin reports new-onset pain and swelling in the posterior ankle.
What is the appropriate action?
A. Advise the patient to take Ibuprofen and continue the medication
, B. Suggest that the patient increase their fluid intake
C. Switch the patient to a different fluoroquinolone
D. Instruct the patient to stop the medication and avoid weight-bearing
Correct Answer: D
Expert Explanation: Fluoroquinolones like Ciprofloxacin carry a black box warning for the
risk of tendon rupture, most commonly the Achilles tendon. Patients should be told to
discontinue the drug immediately at the first sign of tendon pain or inflammation.
Continuing the medication or switching to another drug in the same class would increase
the risk of permanent injury.
5. Which laboratory value must be monitored closely in a patient receiving Vancomycin?
A. Serum potassium levels
B. Serum trough levels
C. Prothrombin time (PT)
D. Liver function tests (ALT/AST)
Correct Answer: B
Expert Explanation: Vancomycin requires therapeutic drug monitoring to ensure efficacy
and minimize toxicity, especially nephrotoxicity. Trough levels are typically drawn just
before the next dose to maintain a steady state within the therapeutic range. Maintaining
these levels is critical for treating serious infections like MRSA effectively.
Pharmacology Q&A with Rationale |
William Paterson University
1. A patient with a history of penicillin allergy is prescribed a first-generation cephalosporin.
What is the primary concern for the nurse practitioner?
A. Immediate development of nephrotoxicity
B. Cross-reactivity between penicillins and cephalosporins
C. Potentiation of the anticoagulant effect of warfarin
D. Rapid development of bacterial resistance
Correct Answer: B
Expert Explanation: Cephalosporins and penicillins share a common beta-lactam ring
structure which can lead to cross-sensitivity. Although the risk is lower with newer
generations, first-generation cephalosporins pose the highest risk of cross-reactivity. The
practitioner should carefully assess the nature of the previous penicillin reaction before
prescribing.
2. Which teaching point is most important for a patient starting a course of Tetracycline?
A. Take the medication with an antacid to prevent GI upset
B. Take the medication with a full glass of milk for better absorption
C. Avoid direct sunlight and wear sunscreen due to photosensitivity
,D. Stop the medication as soon as symptoms resolve
Correct Answer: C
Expert Explanation: Tetracyclines are known to cause significant photosensitivity
reactions in patients. Patients should be educated to avoid sun exposure and use protective
clothing or sunscreen while on this therapy. Taking the medication with calcium-containing
products like milk or antacids actually decreases its absorption significantly.
3. What is the mechanism of action of Macrolide antibiotics like Erythromycin?
A. Inhibiting bacterial cell wall synthesis
B. Inhibiting protein synthesis at the 50S ribosomal subunit
C. Disrupting the bacterial cell membrane
D. Inhibiting DNA gyrase and topoisomerase IV
Correct Answer: B
Expert Explanation: Macrolides work by binding to the 50S ribosomal subunit of
susceptible bacteria. This action prevents the translocation step of protein synthesis,
effectively inhibiting bacterial growth. Because they inhibit growth rather than killing the
bacteria outright, they are generally classified as bacteriostatic.
4. A patient taking Ciprofloxacin reports new-onset pain and swelling in the posterior ankle.
What is the appropriate action?
A. Advise the patient to take Ibuprofen and continue the medication
, B. Suggest that the patient increase their fluid intake
C. Switch the patient to a different fluoroquinolone
D. Instruct the patient to stop the medication and avoid weight-bearing
Correct Answer: D
Expert Explanation: Fluoroquinolones like Ciprofloxacin carry a black box warning for the
risk of tendon rupture, most commonly the Achilles tendon. Patients should be told to
discontinue the drug immediately at the first sign of tendon pain or inflammation.
Continuing the medication or switching to another drug in the same class would increase
the risk of permanent injury.
5. Which laboratory value must be monitored closely in a patient receiving Vancomycin?
A. Serum potassium levels
B. Serum trough levels
C. Prothrombin time (PT)
D. Liver function tests (ALT/AST)
Correct Answer: B
Expert Explanation: Vancomycin requires therapeutic drug monitoring to ensure efficacy
and minimize toxicity, especially nephrotoxicity. Trough levels are typically drawn just
before the next dose to maintain a steady state within the therapeutic range. Maintaining
these levels is critical for treating serious infections like MRSA effectively.
