Adults

  • Native joints
  • +/- non- penetrating trauma

- For chronic monoarticular arthritis, consider mycobacterial infection.

 
Usual Pathogens

S. aureus

 

Other:

Streptococcus spp

Enterobacterales

 
Rare:

P. aeruginosa

 

Empiric Therapy Dose Duration
Cefazolin 2g IV q8h 2-4 weeks
or    
Cloxacillin 2g IV q4h 2-4 weeks

Penicillin allergy

Empiric Therapy Dose Duration
Cefazolin 2g IV q8h 2-4 weeks

Cefazolin allergy/MRSA/IVDU/Immunocompromised/Penetrating Trauma

Empiric Therapy Dose Duration
Vancomycin 15mg/kg IV q12h 2-4 weeks
+    
Ceftriaxone 1-2g IV daily