Antibiotic Spectrums : Cheat sheet

Antibiotic coverage
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Gram positive and Gram negative

  1. Amoxicillin-clavulanate
  2. Tazobactam-piperacillin
  3. Carbapenem: Ertapenen, Imipenem, Meropenem
  4. Cefuroxime
  5. Cefotaxime
  6. Ceftriaxone

Anaerobes

  1. Amoxicillin-clavulanate
  2. Tazobactam-piperacillin
  3. Carbapenems
  4. Clindamycin
  5. Metronidazole

Pseudomonas

  1. Tazobactam-piperacillin
  2. Carbapenems (except Ertapenem)
  3. Ceftazidime, Cefoperazone, Cefepime
  4. Gentamicin, Amikacin, Tobramycin
  5. Ciprofloxacin
  6. Colistin
  7. Aztreonam

Only gram positive

  1. Vancomycin
  2. Teicoplanin
  3. Linezolid
  4. Daptomycin

Only gram negative

  1. Ceftazidime
  2. Colistin
  3. Aztreonam

“Non-culturable” bacteria

  1. Macrolides: Erythromycin, Clarithromycin, Azithromycin
  2. Fluoroquinolones: Ciprofloxacin, Ofloxacin
  3. Doxycycline


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