Evidence-based On-call

internal medicine

Community-acquired pneumonia

Prevalence
Causes
Clinical features
Differential Diagnosis
Investigations
Therapy
Prevention
Prognosis

Investigations

pulse oximetry ^c

Why?

Significant hypoxia produces minimal changes in vital signs in healthy people. ^c

Expiry date: July 2003
Levels of Evidence used in grading these guides

Author	CM Ball
Reviewer	M Kamei
CAT Writers	C Ball , CJ Wotton , B Phillips