BIO301 | BIO301 Pharmacology Exam 4 Version 3 |
Questions with Correct Answers and Expert
Explanation for Each Question | Saint Paul’s School
of Nursing
1. A patient is receiving intravenous Vancomycin for a MRSA infection. Which
laboratory value is most critical for the nurse to monitor to prevent dose-related
toxicity?
A. Peak serum levels
B. Serum potassium
C. Trough serum levels
D. White blood cell count
Correct Answer: C
Expert Explanation: Vancomycin requires careful monitoring of trough levels to
ensure therapeutic efficacy and minimize renal risk. Trough levels are measured
immediately prior to the next scheduled dose to determine the lowest concentration
in the blood. For serious infections like MRSA, a higher trough range of 15-20
mcg/mL is usually targeted. Elevated trough levels are directly associated with an
increased risk of nephrotoxicity. The nurse must communicate these levels to the
provider to adjust dosing as needed.
,2. When administering Gentamicin, an aminoglycoside, the nurse should be most
concerned if the patient reports which new symptom?
A. Increased appetite
B. Orange-colored urine
C. Tinnitus or hearing loss
D. Mild nausea
Correct Answer: C
Expert Explanation: Aminoglycosides like Gentamicin are known for their
significant potential for ototoxicity and nephrotoxicity. Ototoxicity can manifest as
hearing loss, tinnitus, or vestibular dysfunction like dizziness. This damage is often
irreversible if the drug is not discontinued promptly. The nurse must perform
regular auditory assessments and monitor renal function markers like creatinine.
Immediate reporting of these symptoms is essential to prevent permanent sensory
damage to the patient.
3. A patient with HIV is starting Highly Active Antiretroviral Therapy (HAART). What is
the primary reason for using a combination of multiple drugs rather than
monotherapy?
A. To reduce the cost of the overall treatment
B. To prevent the development of drug resistance
,C. To increase the duration of the drug’s half-life
D. To simplify the dosing schedule for the patient
Correct Answer: B
Expert Explanation: HIV is a retrovirus that replicates rapidly and is prone to
genetic mutations. If only one drug is used, the virus can easily develop resistance to
that specific agent. Using a combination of drugs targets the virus at different stages
of its life cycle. This multi-pronged approach makes it much harder for the virus to
mutate successfully against all agents simultaneously. Sustained viral suppression is
the ultimate goal of this complex therapeutic strategy.
4. Prior to administering Amphotericin B for a systemic fungal infection, which nursing
intervention is most appropriate to mitigate infusion reactions?
A. Administering a bolus of 5% Dextrose
B. Placing the patient in a prone position
C. Encouraging a high-protein meal
D. Pre-medicating with acetaminophen and diphenhydramine
Correct Answer: D
Expert Explanation: Amphotericin B is a potent antifungal frequently associated
with infusion-related reactions like fever and chills. These reactions are so common
, they are often referred to as ‘shake and bake’ symptoms. Administering
acetaminophen and an antihistamine like diphenhydramine beforehand helps
reduce the severity of these side effects. Additionally, intravenous fluids may be
given to protect the kidneys from the drug’s nephrotoxic effects. Monitoring vital
signs during the infusion is a critical nursing responsibility for patient safety.
5. A patient is prescribed Ciprofloxacin for a complex urinary tract infection. Which
black box warning should the nurse include in the discharge teaching?
A. Risk of severe constipation
B. Risk of permanent hair loss
C. Risk of extreme weight gain
D. Risk of tendonitis and tendon rupture
Correct Answer: D
Expert Explanation: Fluoroquinolones like Ciprofloxacin carry a black box warning
regarding the risk of tendon rupture. This risk is particularly high in older adults,
those taking corticosteroids, or transplant recipients. Patients should be instructed
to stop the medication and report any new tendon pain or swelling immediately.
The Achilles tendon is the most frequent site of injury associated with this
medication class. Avoiding strenuous exercise during treatment is also a
recommended safety precaution.
Questions with Correct Answers and Expert
Explanation for Each Question | Saint Paul’s School
of Nursing
1. A patient is receiving intravenous Vancomycin for a MRSA infection. Which
laboratory value is most critical for the nurse to monitor to prevent dose-related
toxicity?
A. Peak serum levels
B. Serum potassium
C. Trough serum levels
D. White blood cell count
Correct Answer: C
Expert Explanation: Vancomycin requires careful monitoring of trough levels to
ensure therapeutic efficacy and minimize renal risk. Trough levels are measured
immediately prior to the next scheduled dose to determine the lowest concentration
in the blood. For serious infections like MRSA, a higher trough range of 15-20
mcg/mL is usually targeted. Elevated trough levels are directly associated with an
increased risk of nephrotoxicity. The nurse must communicate these levels to the
provider to adjust dosing as needed.
,2. When administering Gentamicin, an aminoglycoside, the nurse should be most
concerned if the patient reports which new symptom?
A. Increased appetite
B. Orange-colored urine
C. Tinnitus or hearing loss
D. Mild nausea
Correct Answer: C
Expert Explanation: Aminoglycosides like Gentamicin are known for their
significant potential for ototoxicity and nephrotoxicity. Ototoxicity can manifest as
hearing loss, tinnitus, or vestibular dysfunction like dizziness. This damage is often
irreversible if the drug is not discontinued promptly. The nurse must perform
regular auditory assessments and monitor renal function markers like creatinine.
Immediate reporting of these symptoms is essential to prevent permanent sensory
damage to the patient.
3. A patient with HIV is starting Highly Active Antiretroviral Therapy (HAART). What is
the primary reason for using a combination of multiple drugs rather than
monotherapy?
A. To reduce the cost of the overall treatment
B. To prevent the development of drug resistance
,C. To increase the duration of the drug’s half-life
D. To simplify the dosing schedule for the patient
Correct Answer: B
Expert Explanation: HIV is a retrovirus that replicates rapidly and is prone to
genetic mutations. If only one drug is used, the virus can easily develop resistance to
that specific agent. Using a combination of drugs targets the virus at different stages
of its life cycle. This multi-pronged approach makes it much harder for the virus to
mutate successfully against all agents simultaneously. Sustained viral suppression is
the ultimate goal of this complex therapeutic strategy.
4. Prior to administering Amphotericin B for a systemic fungal infection, which nursing
intervention is most appropriate to mitigate infusion reactions?
A. Administering a bolus of 5% Dextrose
B. Placing the patient in a prone position
C. Encouraging a high-protein meal
D. Pre-medicating with acetaminophen and diphenhydramine
Correct Answer: D
Expert Explanation: Amphotericin B is a potent antifungal frequently associated
with infusion-related reactions like fever and chills. These reactions are so common
, they are often referred to as ‘shake and bake’ symptoms. Administering
acetaminophen and an antihistamine like diphenhydramine beforehand helps
reduce the severity of these side effects. Additionally, intravenous fluids may be
given to protect the kidneys from the drug’s nephrotoxic effects. Monitoring vital
signs during the infusion is a critical nursing responsibility for patient safety.
5. A patient is prescribed Ciprofloxacin for a complex urinary tract infection. Which
black box warning should the nurse include in the discharge teaching?
A. Risk of severe constipation
B. Risk of permanent hair loss
C. Risk of extreme weight gain
D. Risk of tendonitis and tendon rupture
Correct Answer: D
Expert Explanation: Fluoroquinolones like Ciprofloxacin carry a black box warning
regarding the risk of tendon rupture. This risk is particularly high in older adults,
those taking corticosteroids, or transplant recipients. Patients should be instructed
to stop the medication and report any new tendon pain or swelling immediately.
The Achilles tendon is the most frequent site of injury associated with this
medication class. Avoiding strenuous exercise during treatment is also a
recommended safety precaution.
