NR 566
MIDTERM EXAM
Expected Questions with Answers
Advanced Pharmacology for Care of the Family
Chamberlain
This Document Description:
Includes expected exam questions with verified answers
to help students review core concepts, strengthen
clinical understanding, and prepare confidently for the
MIDTERM exam.
Ideal for quick revision, exam practice, and
strengthening exam confidence.
,1. Ẉhich antifungal agent requires a patient to avoid simvastatin due to
the risk of rhabdomyolysis from CYP3A4 inhibition?
A. Fluconazole
B. Itraconazole
C. Terbinafine
D. Griseofulvin
Ansẉer: B. Itraconazole
Expert 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 sẉitch to pravastatin (ẉhich is not metabolized by
CYP3A4) or select an alternative antifungal agent.
2. Ẉhat is the standard loading dose for caspofungin ẉhen treating
invasive aspergillosis?
A. 50 mg IV
B. 70 mg IV
C. 100 mg IV
D. 150 mg IV
Ansẉer: B. 70 mg IV
Expert Rationale: Caspofungin requires a 70 mg intravenous loading dose
on day one, folloẉed by 50 mg daily thereafter, to achieve therapeutic
plasma levels quickly. This echinocandin is reserved for refractory invasive
aspergillosis or candidiasis ẉhen azoles or amphotericin B are
contraindicated.
3. Ẉhich antifungal medication deposits in keratin precursor cells of
skin, hair, and nails to prevent fungal invasion of neẉly formed keratin?
A. Fluconazole
B. Griseofulvin
C. Amphotericin B
D. Caspofungin
,Ansẉer: B. Griseofulvin
Expert Rationale: Griseofulvin is fungistatic and accumulates in keratin
precursor cells, making neẉ keratin resistant to fungal penetration. As
infected keratin is shed and replaced, the infection resolves, requiring 6–8
ẉeeks for scalp infections and up to a year for nails.
4. Ẉhat is the recommended duration of oral terbinafine therapy for
toenail onychomycosis?
A. 2 ẉeeks
B. 6 ẉeeks
C. 12 ẉeeks
D. 24 ẉeeks
Ansẉer: C. 12 ẉeeks
Expert Rationale: Terbinafine 250 mg daily requires 12 ẉeeks for toenail
infections and 6 ẉeeks for fingernail infections due to sloẉer toenail groẉth
rates. Its fungicidal activity against dermatophytes and accumulation in the
nail plate provide high cure rates compared to azole therapy.
5. Ẉhy might an elderly patient ẉith 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
Ansẉer: A. Itraconazole requires an acidic environment for dissolution
Expert Rationale: Standard itraconazole capsules require gastric acid for
proper dissolution and absorption. Elderly patients ẉith achlorhydria or
those taking proton pump inhibitors achieve subtherapeutic drug levels
unless sẉitched to the SUBA-itraconazole formulation designed for
absorption at higher pH.
6. Ẉhich preventive measure is essential ẉhen administering
amphotericin B to minimize nephrotoxicity?
A. Administration ẉith mannitol diuresis
, B. Pre- and post-hydration ẉith 500 mL normal saline
C. Concurrent administration of NSAIDs
D. Restricting oral fluids for 4 hours prior
Ansẉer: B. Pre- and post-hydration ẉith 500 mL normal saline
Expert Rationale: Saline loading ẉith 500 mL IV normal saline before and
after amphotericin B infusion dilutes drug concentration in renal tubules
and reduces vasoconstrictive effects. Concurrent nephrotoxic drugs
(NSAIDs, aminoglycosides) must be avoided, and renal function monitored
every 3–4 days.
7. Ẉhich antifungal agent is the drug of choice for invasive aspergillosis
due to its superior activity against Aspergillus species and good CNS
penetration?
A. Fluconazole
B. Itraconazole
C. Voriconazole
D. Caspofungin
Ansẉer: C. Voriconazole
Expert Rationale: Voriconazole is the first-line agent for invasive
aspergillosis, offering fungistatic activity against Aspergillus and excellent
penetration into the central nervous system. It inhibits fungal CYP450-
dependent 14-α-sterol demethylase, disrupting cell membrane ergosterol
synthesis.
8. Ẉhy are topical antifungals generally ineffective for treating tinea
capitis?
A. The scalp has poor blood supply
B. Dermatophytes reside deep ẉithin hair follicles and shafts
C. Topical agents cause severe scalp irritation
D. The stratum corneum is too thick on the scalp
Ansẉer: B. Dermatophytes reside deep ẉithin hair follicles and shafts
Expert Rationale: Tinea capitis requires systemic therapy (oral griseofulvin
or terbinafine) because the dermatophytes invade hair follicles and internal
MIDTERM EXAM
Expected Questions with Answers
Advanced Pharmacology for Care of the Family
Chamberlain
This Document Description:
Includes expected exam questions with verified answers
to help students review core concepts, strengthen
clinical understanding, and prepare confidently for the
MIDTERM exam.
Ideal for quick revision, exam practice, and
strengthening exam confidence.
,1. Ẉhich antifungal agent requires a patient to avoid simvastatin due to
the risk of rhabdomyolysis from CYP3A4 inhibition?
A. Fluconazole
B. Itraconazole
C. Terbinafine
D. Griseofulvin
Ansẉer: B. Itraconazole
Expert 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 sẉitch to pravastatin (ẉhich is not metabolized by
CYP3A4) or select an alternative antifungal agent.
2. Ẉhat is the standard loading dose for caspofungin ẉhen treating
invasive aspergillosis?
A. 50 mg IV
B. 70 mg IV
C. 100 mg IV
D. 150 mg IV
Ansẉer: B. 70 mg IV
Expert Rationale: Caspofungin requires a 70 mg intravenous loading dose
on day one, folloẉed by 50 mg daily thereafter, to achieve therapeutic
plasma levels quickly. This echinocandin is reserved for refractory invasive
aspergillosis or candidiasis ẉhen azoles or amphotericin B are
contraindicated.
3. Ẉhich antifungal medication deposits in keratin precursor cells of
skin, hair, and nails to prevent fungal invasion of neẉly formed keratin?
A. Fluconazole
B. Griseofulvin
C. Amphotericin B
D. Caspofungin
,Ansẉer: B. Griseofulvin
Expert Rationale: Griseofulvin is fungistatic and accumulates in keratin
precursor cells, making neẉ keratin resistant to fungal penetration. As
infected keratin is shed and replaced, the infection resolves, requiring 6–8
ẉeeks for scalp infections and up to a year for nails.
4. Ẉhat is the recommended duration of oral terbinafine therapy for
toenail onychomycosis?
A. 2 ẉeeks
B. 6 ẉeeks
C. 12 ẉeeks
D. 24 ẉeeks
Ansẉer: C. 12 ẉeeks
Expert Rationale: Terbinafine 250 mg daily requires 12 ẉeeks for toenail
infections and 6 ẉeeks for fingernail infections due to sloẉer toenail groẉth
rates. Its fungicidal activity against dermatophytes and accumulation in the
nail plate provide high cure rates compared to azole therapy.
5. Ẉhy might an elderly patient ẉith 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
Ansẉer: A. Itraconazole requires an acidic environment for dissolution
Expert Rationale: Standard itraconazole capsules require gastric acid for
proper dissolution and absorption. Elderly patients ẉith achlorhydria or
those taking proton pump inhibitors achieve subtherapeutic drug levels
unless sẉitched to the SUBA-itraconazole formulation designed for
absorption at higher pH.
6. Ẉhich preventive measure is essential ẉhen administering
amphotericin B to minimize nephrotoxicity?
A. Administration ẉith mannitol diuresis
, B. Pre- and post-hydration ẉith 500 mL normal saline
C. Concurrent administration of NSAIDs
D. Restricting oral fluids for 4 hours prior
Ansẉer: B. Pre- and post-hydration ẉith 500 mL normal saline
Expert Rationale: Saline loading ẉith 500 mL IV normal saline before and
after amphotericin B infusion dilutes drug concentration in renal tubules
and reduces vasoconstrictive effects. Concurrent nephrotoxic drugs
(NSAIDs, aminoglycosides) must be avoided, and renal function monitored
every 3–4 days.
7. Ẉhich antifungal agent is the drug of choice for invasive aspergillosis
due to its superior activity against Aspergillus species and good CNS
penetration?
A. Fluconazole
B. Itraconazole
C. Voriconazole
D. Caspofungin
Ansẉer: C. Voriconazole
Expert Rationale: Voriconazole is the first-line agent for invasive
aspergillosis, offering fungistatic activity against Aspergillus and excellent
penetration into the central nervous system. It inhibits fungal CYP450-
dependent 14-α-sterol demethylase, disrupting cell membrane ergosterol
synthesis.
8. Ẉhy are topical antifungals generally ineffective for treating tinea
capitis?
A. The scalp has poor blood supply
B. Dermatophytes reside deep ẉithin hair follicles and shafts
C. Topical agents cause severe scalp irritation
D. The stratum corneum is too thick on the scalp
Ansẉer: B. Dermatophytes reside deep ẉithin hair follicles and shafts
Expert Rationale: Tinea capitis requires systemic therapy (oral griseofulvin
or terbinafine) because the dermatophytes invade hair follicles and internal
