Antifungal Drugs BSN 3rd Semester study Mcqs with Answers 2025
Anti-fungal Drugs MCQS for Study Purpose
Please study Antifungal drugs before Studying these.
1. What is the primary reason for the increased incidence of human fungal infections?
Answer: B) Advances in surgery, cancer treatment, and critical care
2. The rigid cell wall of fungi is primarily composed of:
Answer: C) N-acetylglucosamine polymer
3. What is the key component of the fungal cell membrane that is targeted by many antifungal drugs?
Answer: B) Ergosterol
4. Tinea pedis is an example of an infection caused by:
Answer: B) Dermatophytes
5. Vulvovaginal candidiasis is typically caused by:
Answer: B) Candida albicans
6. Systemic mycoses most commonly occur in:
Answer: B) Immunocompromised patients
7. Which drug class inhibits ergosterol synthesis?
Answer: B) Azoles
8. Amphotericin B's mechanism of action involves:
Answer: B) Binding to ergosterol and creating pores in the membrane
9. The most serious and common toxicity associated with Amphotericin B is:
Answer: C) Renal toxicity
10. How can infusion-related toxicity from Amphotericin B be managed?
Answer: B) Premedication with antipyretics and antihistamines
11. Liposomal preparations of Amphotericin B are designed to:
Answer: B) Reduce nephrotoxicity and infusion-related toxicity
12. Nystatin is commonly used for:
Answer: C) Topical or superficial candidiasis
13. The Azole antifungal drugs work by inhibiting:
Answer: B) The enzyme lanosterol 14α-demethylase (CYP450)
14. Which class of Azoles is more selective and causes fewer endocrine disturbances?
Answer: C) Triazoles
15. Ketoconazole absorption is decreased by:
Answer: B) Antacids, H2 blockers, and proton pump inhibitors
16. A significant adverse effect of Ketoconazole is its ability to:
Answer: B) Inhibit human adrenal and gonadal steroid synthesis
17. Which azole drug penetrates the BBB effectively and is the drug of choice for cryptococcal meningitis?
Answer: C) Fluconazole
18. Fluconazole is characterized by:
Answer: C) Excellent penetration into the CSF
19. Itraconazole is particularly effective against:
Answer: B) AIDS-associated histoplasmosis
20. Terbinafine's mechanism of action is inhibition of:
Answer: B) Squalene epoxidase
21. Terbinafine is the drug of choice for treating:
Answer: B) Onychomycosis (nail infections)
22. Flucytosine (5-FC) is often used in combination with Amphotericin B because:
Answer: B) Amphotericin B increases fungal cell permeability to Flucytosine
23. Flucytosine is converted inside the fungal cell to:
Answer: A) 5-Fluorouracil (5-FU)
24. A major dose-limiting adverse effect of Flucytosine is:
Answer: B) Bone marrow depression (neutropenia, thrombocytopenia)
25. Caspofungin inhibits fungal cell wall synthesis by targeting:
Answer: C) The enzyme 1,3-β-glucan synthase
26. Caspofungin is administered via which route?
Answer: B) Intravenous (IV) only
27. Griseofulvin's antifungal mechanism involves:
Answer: B) Inhibiting fungal mitosis by disrupting microtubule function
28. Griseofulvin is concentrated in the:
Answer: C) Keratin of skin, hair, and nails
29. For a patient prescribed topical Nystatin for oral thrush, the nurse should instruct them to:
Answer: C) Swish the suspension in the mouth for as long as possible before swallowing
30. A key nursing consideration for a patient on systemic Amphotericin B is to monitor:
Answer: B) Renal function tests (BUN, Creatinine) and electrolytes
31. Which of the following is a mucocutaneous (superficial) fungal infection?
Answer: C) Tinea cruris (Jock itch)
32. The abuse of which medication is a predisposing factor for developing fungal infections?
Answer: B) Broad-spectrum antibiotics
33. What is the chemical target that allows for selective toxicity in antifungal drugs?
Answer: B) The composition of the fungal cell wall and membrane
34. Onychomycosis is a fungal infection of the:
Answer: C) Nails
35. Which antifungal drug class disrupts membrane structure and function by binding to ergosterol?
Answer: B) Polyenes
36. Amphotericin B is derived from which organism?
Answer: B) Streptomyces nodosus
37. Why is Amphotericin B poorly absorbed from the gastrointestinal tract?
Answer: B) It is a large, amphiphilic molecule
38. The half-life of Amphotericin B is approximately:
Answer: B) 16 days
39. Which electrolyte imbalance is commonly associated with Amphotericin B therapy?
Answer: C) Hypokalemia
40. Amphotericin B is the drug of choice for all of the following EXCEPT:
Answer: D) Topical treatment of ringworm
41. Nystatin is structurally and mechanistically similar to:
Answer: B) Amphotericin B
42. Why is Nystatin not used for systemic infections?
Answer: B) It is too toxic for systemic use
43. Ketoconazole is classified as a(n):
Answer: C) Imidazole
44. What can improve the absorption of Ketoconazole in patients with low stomach acid?
Answer: B) Drinking cola drinks
45. A male patient taking Ketoconazole might experience:
Answer: B) Gynaecomastia
46. Itraconazole is characterized by:
Answer: C) High lipid solubility
47. A significant drug interaction concern with Itraconazole is its inhibition of metabolism of:
Answer: B) Oral anticoagulants
48. Which statement is TRUE about Fluconazole?
Answer: C) It is safe to use in bone marrow transplant patients.
49. Which antifungal is highly teratogenic and should be avoided in pregnancy?
Answer: C) Fluconazole
50. Terbinafine is primarily classified as a(n):
Answer: B) Allylamine
51. The accumulation of which compound contributes to Terbinafine's fungicidal effect?
Answer: C) Squalene
52. How long is a typical course of Terbinafine for a toenail infection?
Answer: C) 12 weeks
53. Flucytosine is most commonly used in combination with:
Answer: B) Amphotericin B
54. Flucytosine's mechanism of action ultimately leads to inhibition of:
Answer: C) DNA synthesis
55. The half-life of Flucytosine is:
Answer: A) 3-6 hours
56. Caspofungin belongs to which class of antifungals?
Answer: C) Echinocandins
57. Caspofungin is primarily eliminated from the body via:
Answer: C) Nearly equal between urine and feces
58. Which fungal infection is Caspofungin particularly effective against?
Answer: B) Aspergillus
59. An adverse effect of Caspofungin related to histamine release is:
Answer: B) Flushing
60. Griseofulvin is effective against:
Answer: C) Dermatophytes
61. Griseofulvin's absorption is improved by:
Answer: B) A fatty meal
62. Griseofulvin therapy must be continued for weeks to months because:
Answer: B) It needs to be incorporated into new, healthy keratin to replace infected tissue
63. Which of the following is a potential adverse effect of Griseofulvin?
Answer: B) Peripheral neuritis
64. A primary nursing responsibility before starting antifungal therapy is to:
Answer: A) Obtain a culture of the infected area
65. Patient education for antifungal therapy should include instructing the patient to:
Answer: A) Stop the drug immediately if a severe rash occurs
66. The term "mycoses" refers to:
Answer: C) Fungal infections
67. Which factor does NOT predispose a patient to fungal infections?
Answer: C) High hemoglobin levels
68. The target of Caspofungin is unique because it inhibits:
Answer: C) Cell wall synthesis
69. Which drug is fungicidal due to its direct action on the fungal membrane?
Answer: C) Amphotericin B
70. The drug of choice for Kala Azar (Leishmaniasis) is:
Answer: B) Amphotericin B
71. Azoles are primarily considered to be:
Answer: C) Fungistatic
72. Voriconazole and Posaconazole are examples of:
Answer: B) Triazoles
73. The molecular structure of Amphotericin B is described as:
Answer: C) Amphipathic (amphiphilic)
74. Which antifungal drug can cause a disulfiram-like reaction with alcohol?
Answer: C) Ketoconazole
75. Monitoring for effectiveness of antifungal therapy involves assessing for:
Answer: A) Resolution of fungal infection symptoms
76. Which drug is NOT used to treat mucocutaneous candidiasis?
Answer: D) Griseofulvin
77. The accumulation of which ion inside the fungal cell contributes to the action of Polyenes?
Answer: A) Sodium (Na+)
78. Which antifungal is available in both oral and intravenous formulations?
Answer: C) Fluconazole
79. The primary reason for combining Flucytosine with Amphotericin B is to:
Answer: D) Enhance antifungal activity synergistically
80. Which statement about Fluconazole is FALSE?
Answer: B) It is highly teratogenic. (All azoles have teratogenic potential, but this is not a defining characteristic unique to Fluconazole listed as false among the true facts)
81. The first step in the action of Flucytosine requires:
Answer: A) Conversion to 5-fluorouracil by fungal enzymes
82. A patient with a history of congestive heart failure should be monitored closely when taking:
Answer: B) Itraconazole (due to risk of negative inotropic effect and CHF exacerbation)
83. Which antifungal drug inhibits the enzyme thymidylate synthetase?
Answer: B) Flucytosine (after conversion)
84. The "azole" suffix in drug names typically indicates:
Answer: C) A class of drugs that inhibit CYP450 enzymes
85. Which drug is contraindicated in pregnancy?
Answer: C) Griseofulvin
86. The primary clinical use of Griseofulvin is for:
Answer: B) Ringworm infections
87. Which antifungal drug class is known to cause "red man syndrome" or flushing due to histamine release?
Answer: C) Echinocandins (e.g., Caspofungin)
88. The term "azotemia" in relation to Amphotericin B toxicity refers to:
Answer: B) The buildup of nitrogenous waste products in the blood (indicator of renal toxicity)
89. Which drug is most likely to interact with a large number of other medications due to potent CYP3A4 inhibition?
Answer: C) Itraconazole
90. The chemical target of Terbinafine is earlier in the same pathway targeted by:
Answer: B) Azoles (Both affect ergosterol synthesis, but at different steps)
91. A patient taking which drug should be advised to report any symptoms of unusual bleeding or bruising?
Answer: B) Oral Flucytosine (due to risk of bone marrow depression)
92. Which characteristic applies to MOST systemic antifungal drugs?
Answer: B) They require monitoring of serum levels to avoid toxicity. (Many have narrow therapeutic indices)
93. The drug of choice for a severe, life-threatening infection with an unknown fungus is often:
Answer: B) Amphotericin B (due to its broadest spectrum)
94. Which laboratory value is LEAST likely to be monitored during a course of intravenous Amphotericin B?
Answer: D) International Normalized Ratio (INR) (More relevant for drugs affecting coagulation)
95. The primary advantage of lipid formulations of Amphotericin B is:
Answer: B) Reduced toxicity
96. Which antifungal drug is also used to treat protozoal infections like Leishmaniasis?
Answer: C) Amphotericin B
97. The duration of therapy for antifungal drugs is often:
Answer: B) Chronic (weeks to months)
98. A key difference between bacterial and fungal cells that allows for selective toxicity is the:
Answer: C) Composition of the cell wall and membrane
99. Which drug is most likely to be used for "athlete's foot" (Tinea pedis)?
Answer: C) Terbinafine (topical or oral)
100. The ultimate goal of nursing education for a patient on long-term antifungal therapy is to promote:
Answer: A) Understanding and compliance with the drug regimen
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