Shared Flashcard Set

Details

Fungal Agent Quiz
Quiz on Dr. Krupicka's Anti-fungal Agents
38
Pharmacology
Graduate
04/13/2011

Additional Pharmacology Flashcards

 


 

Cards

Term
What are the 2 most common invasive fungal infections?
Definition
Candida & Aspergillus
Term
What is the most common type of candida?
Definition
C. albicans
Term
How is candida described under a microscope?
Definition
Oval budding yeast
Term
How is aspergillus’ morphology described?
Definition
Branching hyphae
Term
Which azole is renally cleared?
1. Ketoconazole
2. Clotrimazole
3. Fluconazole
4. Itraconazole
5. Voriconazole
6. Posaconazole
Definition
3. Fluconazole
Term
Which azole is well-absorbed and without recommendations for with or without food?
1. Ketoconazole
2. Clotrimazole
3. Fluconazole
4. Itraconazole
5. Voriconazole
6. Posaconazole
Definition
3. Fluconazole
Term
Which azole has a black box warning for use in patients with heart failure?
1. Ketoconazole
2. Clotrimazole
3. Fluconazole
4. Itraconazole
5. Voriconazole
6. Posaconazole
Definition
4. Itraconazole
Term
Which azole is associated with visual changes?
1. Ketoconazole
2. Clotrimazole
3. Fluconazole
4. Itraconazole
5. Voriconazole
6. Posaconazole
Definition
5. Voriconazole
Term
Which azole is available only as a suspension and must be given with food?
1. Ketoconazole
2. Clotrimazole
3. Fluconazole
4. Itraconazole
5. Voriconazole
6. Posaconazole
Definition
6. Posaconazole
Term
What is the imidazole that was initially used but is no longer commonly seen due to adverse reactions and absorption issues?
Definition
Ketoconazole
Term
Which azole has interpatient PK differences?
1. Ketoconazole
2. Clotrimazole
3. Fluconazole
4. Itraconazole
5. Voriconazole
6. Posaconazole
Definition
5. Voriconazole
Term
What is the MOA of the -azoles?
Definition
Inhibition of 14-α-sterol demethylase, a microsomal CYP; prevents lanosterol to ergosterol
(In English: Prevents ergosterol synthesis which is needed for fungal plasma membrane)
Term
Why do azoles interact with warfarin?
Definition
CYP2C9 inhibition
Term
What azole is used for prophylaxis in transplant recipients?
Definition
Posaconazole
Term
How is Posaconazole available (ROA)?
Definition
Suspension Only
Term
How is Voriconazole available (ROA)?
Definition
IV & PO
- tab/suspension taken on empty stomach
- IV has SBECD that accumulates in renal failure
Term
How is Itraconazole available (ROA)?
Definition
PO Only: Solution & Capsule
- Soln > Cap
- Soln: MT stomach
- Cap needs food (needs acid)
Term
How is Fluconazole available (ROA)?
Definition
IV & PO
Good Bioavailability
Term
What are 2 main adverse drug reactions of amphotericin?
Definition
1. Shake & Bake: Infusion reactions:
o fever, chills, shaking &Hypotension
2. Nephrotoxicity
o Direct interaction and/or vasoconstriction
Term
What electrolytes are primarily affected by amphotericin?
Definition
Mg & K
*losing Mg & K is sign of renal dysfunction*
Term
What are 2 antifungals used topically for oral thrush?
Definition
Nystatin & Clotrimazole
Term
What is the serious side effect of flucytosine?
Definition
Bone Marrow Suppression
(due to conversion to 5-FU which is a chemo agent)
Term
What is the MOA of the Echinocandins?
Definition
Inhibit cell wall production
Term
What is the MOA of the Polyenes?
Definition
Bind to ergosterol to disrupt cell membrane
Term
What are the 2 Imidazoles?
Definition
Ketoconazole & Clotrimazole
Term
What are the 4 Triazoles?
Definition
Fluconazole, Itraconazole, Voriconazole & Posaconazole
Term
What should be monitored when on oral Terbinafine?
Definition
LFTs for liver function
Term
What are the Polyenes drugs?
Definition
Amphotericin & Nystatin
Term
AmBisome & Abelcet dosing is _______ than amphotercin B deoxycholate.
Definition
Higher
Term
What antifungal drug is activated by fungal cells to a potent chemotherapy agent?
*Bonus: what's the name of the agent?*
Definition
Flucytosine
(5-FU)
Term
What CLASS of antifungals is available only in IV?
Definition
Echinocandins
Term
Which polyene is only used topically?
Definition
Nystatin
Term
Why are Triazoles preferred to Imidazoles?
Definition
Imidazoles hit more human CYPs, causing more adverse drug reactions
Term
What drug is available as an oral troche?
Definition
Clotrimazole
Term
Which anti-fungal agent is never used alone due to depelopment of resistance?
Definition
Flucytosine
Term
What are the 3 Echinocandins?
Definition
Caspofungin, Micafungin & Anidulafungin
Term
How is Amphotericin delivered (ROA)?
Definition
IV only (but with dextrose)
Term
Which CLASS of anti-fungals is used for prophylaxis in immunocompromised patients
Definition
Echinocandins
Supporting users have an ad free experience!