Antifungal Flashcards
Types of antifungal
Triazole
Imidazole
Other
Triazoles antifungal is used t
For
Prevention and systemic tx of fungal infections
List examples of triazole abx
Fluconazole, itraconazole, posaconazole, voriconazole
Imidazole abx is used to tx?
Vaginal candidasis and dermatophyte infections
Eg of imidazole
Clotrimazole, econazole , Ketoconazole
Miconazole
Miconazole is used to tx
Oral and intestinal infections
Cause significant drug interaction warfarin
Examples of polyene antifungal
Nystatin and amphotericin
Examples of polyene antifungal
Oral, orophargngeal, perioral infections, candida alibicans infection of skin
What is amphotericin IV infusion used to tx( polyene )
System infections .
Active against most fungi and yeast
Toxic when given parenterally ( avoid rapid infusion) with side effects
Facts about other antifungal s
Eg Griseofulvin and terbinafine
Whats the drug of choice for fungal nail infection
Terbinafine
Other indication of terbinafine
Used for ringworm infection where oral tx is inappropriate
Caution with amphotericin B
Avoid rapid infusion (risk of Arrhythmia)
Anaphylaxis can occur with IV(test dose advised)
MHRA warning for amphotericin B
Different forms are not interchangeable as it has led to fatal overdoses
Prescribers should specify formulation
Is amphotericin B safe in pregnancy?
Not known to be harmful but manufacturers advise against
Monitoring requirements with amphotericin B
Plasma electrolytes, blood counts, hepatic and renal function
Caution with fluconazole
Susceptibility to QT interval prolongation
Side effect of Fluconazole
Diarrhoea, GI, N, V and skin reactions
State when to discontinue fluconazole
If rash occurs or sign of hepatic disease
What age can fluconazole be sold OTC?
Exception to legal category
Capsules sold to public for vaginal candidiasis and candida balancing
Age 16-60yrs
Pack size of fluconazole sold to the public
Not greater than 150mg and labelled to show max dose of 150mg
Important safety info for Itraconazole
Can cause HF
Caution with pts at risk of heart failure
Active liver disease
State when to seek medical attention for pts on ITRACONAZOLE
If signs of liver disorder occurs such as N, V, Anorexia, dark urine , abdominal pain