fungals Flashcards
MOA of imidazoles
block ergosterol synthesis via C14-demthylase
non-fungal uses of ketoconazole (3)
prostate CA- decreases testosterone
cushings- decreases cortisol
hypercalcemia in Sarcoid- decreases active vit D
ADRs of ketoconazole (3)
GI upset, hepatotoxicity, decreased testosterone (gynecomastia, decreased libido, ED)
fluconazole elimination
renal *unique
ketoconazole interactions
3A4 inhibitor
fluconazole interactions
2C9, 2c19 and 3A4 inhibitor
2 unique ADRs of itraconazole
taste disturbance, heart failure
unique ADRs of voriconazole
can penetrate CNS- so can cause vision disturbance, photosensitivity, hallucinations
imidazoles pregnancy category
all are cat C
except voriconazole is cat D
posaconazole has better activity against-
mucor
MOA of echinocandins
disrupt cell wall synthesis via glucan
use of echinocandins
drugs of choice for invasive candidiasis
MOA of polyenes
bind to ergosterol and create holes in cell membrane
preferred drug for severe fungal infections in pregnancy
amphotericin B
3 types of ADRs for amphotericin B
infusion related- premedicate with NSAIDs, steroids, diphenhydramine
nephrotoxicity- premedicate with IV fluids
Hypokalemia