The Four and a Half Classes of PNA, Bugs, and Usual Drugs

WAP (Walking PNA)
Atypical

Azithromycin (N/V/D, rash, ringing)
Tetracycline (no kids allowed, vag candida, N/V/D, skin photosens)

CAP (Community Acquired PNA)
Atypical, G pos, G neg

outpatient young: Azithro, or else doxycycline
outpatient old (>60): Omnicef (

HAP (Hospital Acquired PNA) and VAP (Ventilator assoc. PNA)
> 48 hrs post hospital admit
PSA, MRSA, Atypical

Use all three: Zosyn (Kidneys, Salt) or Cefepime + Vanc (kidneys), or else Linezolid (thrombocytopenia) + Azithro

HCAP
2+ hosp days <90 days ago OR nurse txed you < 30 days ago OR family had MDR  (Multidrug resistant) infx.
PSA, MRSA, Atypical

see HAP