Antibiotic Principles

Question 1

Which antibiotics cover MRSA:

Answer 1

• Vancomycin
• Gentamicin WITH a B-lactam (ie. ‘added’)
• Bactrim
• Doxycycline (PO)
• Linezolid

Question 2

Which antibiotics cover GIT:

Answer 2

Triples:
Amoxicillin 2g QID
+ Gentamicin 4-6mg/kg daily
+ Metronidazole 500mg BD

Can’t have Gent:
………….

Can’t have Penicillin
…………..

Question 3

MRSA risk factors (when to cover):

Answer 3

• ATSI
• Living in area with high prevalence (eg. NT)
• History of colonisation/infection
• Institution/ RACF with high prevelance
• Frequent/prolonged hospital stays with high prevalence

Question 4

Which antibiotics cover INTRACELLULAR organisms?

Answer 4

Chlamydia
Mycoplasma
Legionella

eg. Atypical pneumonia, PID, STI

Doxycycline PO option

Roxithromycin if preg/BF
Azithromycin IV option

Question 5

Which antibiotics treat C.Diff?

Answer 5

ORAL Metronidazole or Vancomycin