NR 566 Advanced Pharmacology
Midterm Examination 2026: Complete
-Question Practice Bank with
Evidence-Based Rationales for
Chamberlain University Nurse
Practitioner Students
SECTION 1: ANTIFUNGAL PHARMACOLOGY
Which antifungal agent requires patients to avoid simvastatin due to
the risk of rhabdomyolysis from CYP3A4 inhibition?
A. Fluconazole
B. Itraconazole
C. Terbinafine
D. Griseofulvin
Answer: B. Itraconazole
Rationale: Itraconazole potently inhibits the CYP3A4 enzyme, significantly
increasing plasma concentrations of HMG-CoA reductase inhibitors like
simvastatin, leading to myopathy and rhabdomyolysis. Prescribers must
either switch to pravastatin (which is not metabolized by CYP3A4) or select
an alternative antifungal agent .
,What is the standard loading dose for caspofungin when treating
invasive aspergillosis?
A. 50 mg IV
B. 70 mg IV
C. 100 mg IV
D. 150 mg IV
Answer: B. 70 mg IV
Rationale: Caspofungin requires a 70 mg IV loading dose on day 1,
followed by 50 mg IV daily thereafter for invasive aspergillosis. This loading
dose helps achieve therapeutic concentrations more rapidly .
Why might an elderly patient with achlorhydria have reduced
absorption of standard itraconazole formulations?
A. Itraconazole requires an acidic environment for dissolution
B. Achlorhydria increases renal clearance
C. Gastric acid destroys itraconazole
D. Achlorhydria induces CYP3A4 enzymes
Answer: A. Itraconazole requires an acidic environment for dissolution
Rationale: Standard itraconazole capsules require gastric acid for proper
dissolution and absorption. Elderly patients with achlorhydria or those
taking proton pump inhibitors achieve subtherapeutic drug levels unless
switched to the SUBA-itraconazole formulation designed for absorption at
higher pH .
Which adverse effect should the clinician monitor for in a patient
receiving caspofungin?
,A. Severe hypoglycemia
B. Hepatic dysfunction and infusion-related reactions
C. Permanent hearing loss
D. Severe constipation
Answer: B. Hepatic dysfunction and infusion-related reactions
Rationale: Caspofungin may cause elevations in hepatic enzymes and
should be used with appropriate monitoring of liver function, particularly in
patients with preexisting hepatic disease or those receiving other
hepatotoxic medications. Infusion-related reactions may also occur,
including flushing, fever, chills, or histamine-mediated symptoms .
What is the first-line treatment choice for most systemic mycoses?
A. Fluconazole
B. Itraconazole
C. Amphotericin B
D. Caspofungin
Answer: C. Amphotericin B
Rationale: Amphotericin B is the drug of choice as a broad-spectrum agent
for most systemic mycoses. It is available in IV form and remains the gold
standard for severe fungal infections despite its nephrotoxicity risk .
Which preventive measure is essential when administering
amphotericin B to minimize nephrotoxicity?
A. Pre-medication with antihistamines
B. Saline hydration and monitoring renal function
C. Administering with grapefruit juice
D. Reducing the dose by 50%
, Answer: B. Saline hydration and monitoring renal function
Rationale: Saline hydration helps prevent amphotericin B-induced
nephrotoxicity by maintaining renal blood flow. Doses exceeding 4g are
likely to cause renal impairment, and the drug should be administered for
the shortest time possible (typically 6-8 weeks, up to 3-4 months) and only
for life-threatening conditions .
An antifungal agent that inhibits beta-(1,3)-D-glucan synthesis in the
fungal cell wall is classified as:
A. Azole
B. Polyene
C. Echinocandin
D. Allylamine
Answer: C. Echinocandin
Rationale: Echinocandins, including caspofungin, inhibit beta-(1,3)-D-
glucan synthesis, an essential component of the fungal cell wall. This
mechanism is unique among antifungal classes. Caspofungin is used for
invasive Candida infections and has activity against Aspergillus species .
Which medication is the drug of choice for most intestinal
roundworms and clears infestations with pinworms, hookworms, and
giant roundworms?
A. Albendazole
B. Mebendazole
C. Pyrantel pamoate
D. Ivermectin
Answer: B. Mebendazole
Midterm Examination 2026: Complete
-Question Practice Bank with
Evidence-Based Rationales for
Chamberlain University Nurse
Practitioner Students
SECTION 1: ANTIFUNGAL PHARMACOLOGY
Which antifungal agent requires patients to avoid simvastatin due to
the risk of rhabdomyolysis from CYP3A4 inhibition?
A. Fluconazole
B. Itraconazole
C. Terbinafine
D. Griseofulvin
Answer: B. Itraconazole
Rationale: Itraconazole potently inhibits the CYP3A4 enzyme, significantly
increasing plasma concentrations of HMG-CoA reductase inhibitors like
simvastatin, leading to myopathy and rhabdomyolysis. Prescribers must
either switch to pravastatin (which is not metabolized by CYP3A4) or select
an alternative antifungal agent .
,What is the standard loading dose for caspofungin when treating
invasive aspergillosis?
A. 50 mg IV
B. 70 mg IV
C. 100 mg IV
D. 150 mg IV
Answer: B. 70 mg IV
Rationale: Caspofungin requires a 70 mg IV loading dose on day 1,
followed by 50 mg IV daily thereafter for invasive aspergillosis. This loading
dose helps achieve therapeutic concentrations more rapidly .
Why might an elderly patient with achlorhydria have reduced
absorption of standard itraconazole formulations?
A. Itraconazole requires an acidic environment for dissolution
B. Achlorhydria increases renal clearance
C. Gastric acid destroys itraconazole
D. Achlorhydria induces CYP3A4 enzymes
Answer: A. Itraconazole requires an acidic environment for dissolution
Rationale: Standard itraconazole capsules require gastric acid for proper
dissolution and absorption. Elderly patients with achlorhydria or those
taking proton pump inhibitors achieve subtherapeutic drug levels unless
switched to the SUBA-itraconazole formulation designed for absorption at
higher pH .
Which adverse effect should the clinician monitor for in a patient
receiving caspofungin?
,A. Severe hypoglycemia
B. Hepatic dysfunction and infusion-related reactions
C. Permanent hearing loss
D. Severe constipation
Answer: B. Hepatic dysfunction and infusion-related reactions
Rationale: Caspofungin may cause elevations in hepatic enzymes and
should be used with appropriate monitoring of liver function, particularly in
patients with preexisting hepatic disease or those receiving other
hepatotoxic medications. Infusion-related reactions may also occur,
including flushing, fever, chills, or histamine-mediated symptoms .
What is the first-line treatment choice for most systemic mycoses?
A. Fluconazole
B. Itraconazole
C. Amphotericin B
D. Caspofungin
Answer: C. Amphotericin B
Rationale: Amphotericin B is the drug of choice as a broad-spectrum agent
for most systemic mycoses. It is available in IV form and remains the gold
standard for severe fungal infections despite its nephrotoxicity risk .
Which preventive measure is essential when administering
amphotericin B to minimize nephrotoxicity?
A. Pre-medication with antihistamines
B. Saline hydration and monitoring renal function
C. Administering with grapefruit juice
D. Reducing the dose by 50%
, Answer: B. Saline hydration and monitoring renal function
Rationale: Saline hydration helps prevent amphotericin B-induced
nephrotoxicity by maintaining renal blood flow. Doses exceeding 4g are
likely to cause renal impairment, and the drug should be administered for
the shortest time possible (typically 6-8 weeks, up to 3-4 months) and only
for life-threatening conditions .
An antifungal agent that inhibits beta-(1,3)-D-glucan synthesis in the
fungal cell wall is classified as:
A. Azole
B. Polyene
C. Echinocandin
D. Allylamine
Answer: C. Echinocandin
Rationale: Echinocandins, including caspofungin, inhibit beta-(1,3)-D-
glucan synthesis, an essential component of the fungal cell wall. This
mechanism is unique among antifungal classes. Caspofungin is used for
invasive Candida infections and has activity against Aspergillus species .
Which medication is the drug of choice for most intestinal
roundworms and clears infestations with pinworms, hookworms, and
giant roundworms?
A. Albendazole
B. Mebendazole
C. Pyrantel pamoate
D. Ivermectin
Answer: B. Mebendazole
