NUR 521 ADVANCED PHARMACOLOGY - EXAM 4
BLUEPRINT EXAM QUESTIONS COMPLETE WITH 100%
VERIFIED ANSWERS
1. A patient with invasive candidiasis develops acute kidney injury.
Which antifungal agent should be avoided due to its nephrotoxic
effects?
A) Fluconazole
B) Caspofungin
C) Amphotericin B
D) Voriconazole
Answer: C Rationale: Amphotericin B is highly nephrotoxic and can
cause acute kidney injury through direct tubular damage and renal
vasoconstriction. Alternative agents like azoles or echinocandins should
be considered in patients with renal impairment.
2. Which antifungal agent works by inhibiting beta-glucan synthesis in
the fungal cell wall?
A) Fluconazole
B) Amphotericin B
C) Caspofungin
D) Terbinafine
,Answer: C Rationale: Caspofungin is an echinocandin that inhibits beta-
glucan synthase, disrupting fungal cell wall synthesis. This mechanism is
unique to echinocandins and provides a different target than azoles or
polyenes.
3. A patient develops severe hypotension and fever during an
Amphotericin B infusion. What is the most appropriate management
strategy?
A) Discontinue the infusion permanently
B) Switch to oral fluconazole
C) Premedicate with acetaminophen, antihistamines, and
corticosteroids
D) Administer epinephrine immediately
Answer: C Rationale: Amphotericin B infusion reactions (fever, chills,
hypotension) can be managed with premedication including
acetaminophen, diphenhydramine, and hydrocortisone. Slowing the
infusion rate and using liposomal formulations also reduce these
reactions.
4. Which antifungal is considered the drug of choice for treatment of
cryptococcal meningitis in HIV-positive patients?
A) Amphotericin B deoxycholate
B) Fluconazole
C) Itraconazole
D) Voriconazole
Answer: B Rationale: Fluconazole is the preferred agent for cryptococcal
meningitis due to its excellent CNS penetration and oral bioavailability.
,Amphotericin B may be used for induction therapy, but fluconazole is
maintained for consolidation and maintenance therapy.
5. A 70-year-old patient with heart failure is diagnosed with a systemic
fungal infection. Which azole antifungal is contraindicated in this
patient?
A) Fluconazole
B) Itraconazole
C) Voriconazole
D) Ketoconazole
Answer: B Rationale: Itraconazole has a black box warning due to
negative inotropic effects that can exacerbate heart failure. It is
contraindicated in patients with ventricular dysfunction and should be
avoided in those with heart failure history.
6. What is the primary mechanism of resistance to azole antifungals in
Candida species?
A) Increased drug efflux
B) Reduced drug binding to ergosterol
C) Overexpression of target enzyme
D) Biofilm formation
Answer: A Rationale: The most common mechanism of azole resistance
in Candida is increased efflux through ATP-binding cassette transporters.
Other mechanisms include target enzyme mutations and
overexpression of ERG11 gene.
7. A patient receiving voriconazole develops visual disturbances
including photopsia and blurred vision. What is the appropriate
action?
, A) Discontinue the medication immediately
B) Reassure the patient and continue therapy
C) Switch to amphotericin B
D) Reduce the dosage by 50%
Answer: B Rationale: Visual disturbances (photopsia, blurred vision) are
reversible side effects of voriconazole that typically resolve with
continued therapy. These occur in approximately 30% of patients and
usually do not require drug discontinuation unless severe.
8. Which antifungal agent has activity against Aspergillus species but
lacks efficacy against Candida?
A) Fluconazole
B) Itraconazole
C) Voriconazole
D) Amphotericin B
Answer: C Rationale: Voriconazole has excellent activity against
Aspergillus species and is the drug of choice for invasive aspergillosis.
While it has some Candida activity, fluconazole is preferred for most
Candida infections due to better tolerability and lower cost.
9. A patient with mucormycosis requires antifungal therapy. Which
agent is most appropriate?
A) Fluconazole
B) Voriconazole
C) Amphotericin B
D) Caspofungin
Answer: C Rationale: Amphotericin B is the drug of choice for
mucormycosis, with high doses required for effective treatment.
BLUEPRINT EXAM QUESTIONS COMPLETE WITH 100%
VERIFIED ANSWERS
1. A patient with invasive candidiasis develops acute kidney injury.
Which antifungal agent should be avoided due to its nephrotoxic
effects?
A) Fluconazole
B) Caspofungin
C) Amphotericin B
D) Voriconazole
Answer: C Rationale: Amphotericin B is highly nephrotoxic and can
cause acute kidney injury through direct tubular damage and renal
vasoconstriction. Alternative agents like azoles or echinocandins should
be considered in patients with renal impairment.
2. Which antifungal agent works by inhibiting beta-glucan synthesis in
the fungal cell wall?
A) Fluconazole
B) Amphotericin B
C) Caspofungin
D) Terbinafine
,Answer: C Rationale: Caspofungin is an echinocandin that inhibits beta-
glucan synthase, disrupting fungal cell wall synthesis. This mechanism is
unique to echinocandins and provides a different target than azoles or
polyenes.
3. A patient develops severe hypotension and fever during an
Amphotericin B infusion. What is the most appropriate management
strategy?
A) Discontinue the infusion permanently
B) Switch to oral fluconazole
C) Premedicate with acetaminophen, antihistamines, and
corticosteroids
D) Administer epinephrine immediately
Answer: C Rationale: Amphotericin B infusion reactions (fever, chills,
hypotension) can be managed with premedication including
acetaminophen, diphenhydramine, and hydrocortisone. Slowing the
infusion rate and using liposomal formulations also reduce these
reactions.
4. Which antifungal is considered the drug of choice for treatment of
cryptococcal meningitis in HIV-positive patients?
A) Amphotericin B deoxycholate
B) Fluconazole
C) Itraconazole
D) Voriconazole
Answer: B Rationale: Fluconazole is the preferred agent for cryptococcal
meningitis due to its excellent CNS penetration and oral bioavailability.
,Amphotericin B may be used for induction therapy, but fluconazole is
maintained for consolidation and maintenance therapy.
5. A 70-year-old patient with heart failure is diagnosed with a systemic
fungal infection. Which azole antifungal is contraindicated in this
patient?
A) Fluconazole
B) Itraconazole
C) Voriconazole
D) Ketoconazole
Answer: B Rationale: Itraconazole has a black box warning due to
negative inotropic effects that can exacerbate heart failure. It is
contraindicated in patients with ventricular dysfunction and should be
avoided in those with heart failure history.
6. What is the primary mechanism of resistance to azole antifungals in
Candida species?
A) Increased drug efflux
B) Reduced drug binding to ergosterol
C) Overexpression of target enzyme
D) Biofilm formation
Answer: A Rationale: The most common mechanism of azole resistance
in Candida is increased efflux through ATP-binding cassette transporters.
Other mechanisms include target enzyme mutations and
overexpression of ERG11 gene.
7. A patient receiving voriconazole develops visual disturbances
including photopsia and blurred vision. What is the appropriate
action?
, A) Discontinue the medication immediately
B) Reassure the patient and continue therapy
C) Switch to amphotericin B
D) Reduce the dosage by 50%
Answer: B Rationale: Visual disturbances (photopsia, blurred vision) are
reversible side effects of voriconazole that typically resolve with
continued therapy. These occur in approximately 30% of patients and
usually do not require drug discontinuation unless severe.
8. Which antifungal agent has activity against Aspergillus species but
lacks efficacy against Candida?
A) Fluconazole
B) Itraconazole
C) Voriconazole
D) Amphotericin B
Answer: C Rationale: Voriconazole has excellent activity against
Aspergillus species and is the drug of choice for invasive aspergillosis.
While it has some Candida activity, fluconazole is preferred for most
Candida infections due to better tolerability and lower cost.
9. A patient with mucormycosis requires antifungal therapy. Which
agent is most appropriate?
A) Fluconazole
B) Voriconazole
C) Amphotericin B
D) Caspofungin
Answer: C Rationale: Amphotericin B is the drug of choice for
mucormycosis, with high doses required for effective treatment.
