Community Acquired Pneumonia (CAP) – suggestive symptoms

Any ≥ 2 of the following are suggestive for CAP:

  • fever / hypothermia
  • rigors
  • sweats
  • new / increased cough (± sputum)
  • chest discomfort
  • new onset dyspnoea
  • confusion (especially elderly)

CAP – Investigations:

  • FBC, EUC, Glc
  • ± CXR – generally patients with normal CXR will not benefit from intravenous antibiotics
    • advanced age
    • renal / cardiac / CLD / CNS disease / malignancy / immunosuppression
    • RR > 30 / SBP < 90 / DBP ≤ 60 / acute confusion
    • Os2 saturation < 90%
    • bilateral / multilobar involvement on CXR

CAP – Management (basic questions to ask):

  1. Is it pneumonia?
  2. How severe is the pneumonia?
  3. Is hospitalisation appropriate?
  4. What therapy should be commenced?
  5. Are there any special considerations?

CAP – pathogens:

  • Strep. pneumonia
  • Chlamydia pneumoniae
  • Chlamydia psittaci
  • Mycoplasma pneumoniae
  • Haemophilus influenzae
  • Moraxella catarrhalis
  • respiratory viruses
  • less common, but important:
    • Legionella spp.
    • S. aureus
    • Gram negative bacilli
    • tropical pathogens (northern Australia)
      • Acinetobacter baumannii
      • Burkholderia pseudomalle

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