Fast Five Quiz: Pneumonia Practice Essentials

Michael Stuart Bronze, MD


November 03, 2021

L pneumophila CAP (Legionnaires disease) is associated with the following findings:

  • Gastrointestinal (eg, diarrhea) and neurologic symptoms (eg, headache, confusion) in the setting of pneumonia

  • Positive history of water or travel exposure

  • Relative bradycardia during febrile episode

  • Hyponatremia, hypophosphatemia, elevated creatine phosphokinase level, elevated ferritin level, myoglobinuria

  • Leukocytosis with relative lymphopenia

  • Unresponsive to beta-lactam antibiotics

Mycoplasma pneumoniae CAP is associated with the following findings:

  • Headache, fever, malaise, sore throat in young adult with insidious onset of cough

  • Erythema multiforme major (Stevens-Johnson syndrome)

  • Cardiac conduction abnormalities

  • Hemolytic anemia and cold-agglutinin syndrome

  • Neurologic abnormalities, including aseptic meningitis or meningoencephalitis, Guillain-Barré syndrome, transverse myelitis

Coxiella burnetii CAP (Q fever) is associated with the following factors:

  • Acute infection

  • Severe retrobulbar headache, myalgias, fever, rigors, nonproductive cough

  • Elevated aminotransferase levels and thrombocytopenia

  • Maculopapular or purpuric rash

  • Zoonotic exposure (goats, sheep, cattle most common)

Read more clinical information on Legionnaires disease.


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