02.02 Resp

Written By Joan

02.02 Respiratory [PDF link]: Pneumonia: Community acquired (CAP), Hospital-acquired (HAP), Atypical pneumonia, Pneumonia in immunocompromised patients – Pneumocystic jirovecii (PCP), Aspergillosis, Lung abscess / empyema, Aspiration pneumonia, Acute bronchitis

External links

  • CURB-65 score for pneumonia: MDCalc

Hints about potential aetiology of pneumonia

  • Hx of alcohol use + cavitation on CXR: Klebsiella pneumoniae

  • Hx of prior flu: Staph pneumoniae

  • A/w chicken pox: Varicella pneumonitis

  • Hemolytic anaemia = Mycoplasma pneumoniae

  • A/w hyponatraemia ± travel history = Legionella

  • After seizures, loss of consciousness, feeding at risk, etc – think aspiration pneumonia

  • HSV oral lesions = Strep pneumoniae

  • Parrots involved = Chlamydia psittaci

  • Farm animals (esp in endemic region) – ? Q fever (Coxiella brunetti)

  • PMH of HIV + desaturation on exertion = Pneumocystis jirovecii (aka PCP)

  • PMH of cystic fibrosis = Consider Pseudomonas or Burkholderia

    • Some patients will have chronic / recurrent infections

  • PMH of COPD = Haemophilus influenzae

  • Most common cause of CAP in general is still Strep pneumoniae

Joan
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