Antibiotics

1. Semisynthetic penicillinase-resistant penicillins: Oxacillin, cloxacillin, dicloxacillin, nafcillin
when sensitive, better than vancomycin, also treat strep: s. pneumonia, Viridans, group A, B, C, G
MRSA: use vancomycin, or Linezolid, quinupristin/dalfopristin as alternatives

2. Penicillin G, penicillin VK, ampicillin, amoxcillin
strep + E. Coli + listeria + Neisseria

3. Piperacillin, ticarcillin, mezlocillin
Enterobacteriacceae + pseudomonas

4. Ceph for pseudomonas: Only ceftazidime and cefepime

5. Penicillin insensitive pheumococci: cefatriaxone & cefataxime

6. Quinolones for pseudomonas: only ciprofloxacin

7. Exclusive Gram (-): gentamicin, tobramycin, amikacin, aztreonam

8. all: imipenem, meropenem, ertapenem(no pseudomonas)

9. Anaerobes: Metronidazole, clindamycin, carbapenem