PLUS
OR
Lacks Legionella & B. pertussis coverage
Obtain MRSA nasal PCR to guide de-escalation
OR
See antibiogram for decision to use Cefepime empirically
5 days with clinical improvement (afebrile x48h, vital signs stable), resolution of hypoxia, and absence of complicating factors
Decreasing PCT can guide discontinuation
Confirmed MRSA or Pseudomonas PNA may require longer treatment if extensive disease