High Risk

Usual Pathogens
Gram positive:

Coagulase negative Staph
Enterococcus spp
Viridans Group Streptococci
S. aureus/MRSA
S. lugdunensis
Corynebacterium spp
Bacillus cereus
Rothia spp
ß-haemolytic Streptococci
S. pneumoniae
Rhodococcus spp
Abiotrophia spp
Granulicatella spp
Leuconostoc spp
Pediococcus spp

 
Gram negative:

Enterobacteriaceae
Pseudomonas spp
Stenotrophomonas maltophilia
Achromobacter spp
Acinetobacter spp
Burkholderia spp
Capnocytophaga spp
Eikenella spp

Anaerobes
Polymicrobial (20-30%)
Fungi (< 5%)

Hemodynamically stable

Empiric Therapy Dose Duration
Piperacillin-tazobactam 300mg piperacillin/kg/d IV div q6h See Duration
+    
[Gentamicin 7mg/kg IV q24h x 1 dose  
or    
Tobramycin] 7mg/kg IV q24h x 1 dose  

Alternative

Empiric Therapy Dose Duration
[Cefepime 150mg/kg/d IV div q8h See Duration
or    
Imipenem 80mg/kg/d IV div q6h  
or    
Meropenem] 60mg/kg/d IV div q6-8h  
+    
[Gentamicin 7mg/kg IV q24h x 1 dose  
or    
Tobramycin] 7mg/kg IV q24h x 1 dose  

Hemodynamically unstable

Empiric Therapy Dose Duration
Piperacillin-tazobactam 300mg piperacillin/kg/d IV div q6h See Duration
+    
Vancomycin 60mg/kg/d IV div q6h  
+    
[Gentamicin 7mg/kg IV q24h x 1 dose  
or    
Tobramycin] 7mg/kg IV q24h x 1 dose  

Severe ß-lactam allergy/anaphylaxis

Empiric Therapy Dose Duration
Ciprofloxacin 30mg/kg/d IV/PO div q12h See Duration
+    
Clindamycin 40mg/kg/d IV/PO div q8h  
+    
[Gentamicin 7mg/kg IV q24h x 1 dose  
or    
Tobramycin] 7mg/kg IV q24h x 1 dose