Other ABs Flashcards
Cefalexin class?
Cephalosporins
Indication for cefalexin?
Staph or strep infections where the pt has a mild penicillin allergy
UTI Tx or prophylaxis
Cefalexin dose
250mg every 6 hours (up to 4g daily)
- higher doses can be used IV
- 250mg at night for UTI prophylaxis
Cefalexin MOA?
Same as penicillins
Dose reduction for cefalexin?
If CrCl is below 10
Precaution with administering cefalexin IV?
Slow infusion to avoid neurotoxicity - could cause confusion, seizures, etc
Name a macrolide
Clarithromycin
Clarithromycin indications?
Helicobacter pylori eradication, LRTIs, used in penicillin / cephalosporin allergies
Clarithromycin dose?
250-500mg bd, up to 1g bd
Clarithromycin is effective against haemophilus influenziae and which other organisms?
Staph, strep, mycoplasma pneumoniae
ADRs of clarithromycin
Taste disturbances, nausea, diarrhoea, abdominal pain, Prolonged QT interval
Dose reduction in clarithromycin?
If CrCl is below 30
Counselling point for clarithromycin?
Interactions are common. Advice HPs that you are taking it before taking anything new
Metronidazole dose?
200 - 400mg every 8-12 hours.
Max = 4g daily
Metronidazole spectrum?
Anaerobic bacteria
Metronidazole ADRs?
N/V/D, metallic taste, CNS effects (dizziness, headache)
Reduce dose of metronidazole when?
Hepatic impairment
Ciprofloxacin class?
Quinolone