Helps determine risk of mortality from Community-Acquired Pneumonia (CAP) and guides home vs. admit; PSI is favored over CURB-65 by ATS/IDSA but is cumbersome to use, resulting in many preferring CURB-65.
← Back to ABX SelectorMichael J. Fine and the Pneumonia Patient Outcomes Research Team (PORT) investigators. Placeholder — verify authorship/affiliations
Fine MJ, Auble TE, Yealy DM, et al. A prediction rule to identify low-risk patients with community-acquired pneumonia. N Engl J Med. 1997;336(4):243–250. Derived on 14,199 inpatients and validated on 38,039 patients across the PORT cohort. Placeholder — verify PMID + exact figures
Externally validated across multiple cohorts and compared head-to-head with CURB-65 (e.g., Aujesky et al., Am J Med 2005, found PSI slightly more discriminating for mortality). Placeholder — pick the citations we want to stand behind
Adults with radiographically confirmed CAP, to risk-stratify 30-day mortality and support the outpatient-vs-admit decision. Its real strength is confidently identifying the low-risk patient who is safe to treat at home. Placeholder — red-pen
Not validated in immunocompromised hosts. It is a mortality predictor, not a disposition rule — a low score does not capture hypoxia in a young patient, inability to tolerate PO, or absent home support; those override the number. Not for hospital-acquired pneumonia. Placeholder — red-pen
Where we go past a bare calculator: our opinion on PSI vs. CURB-65 in a real ED, the traps in Class I, and a one-tap jump to our CAP treatment page once you have a disposition. Placeholder — this is the section that beats MDCalc; red-pen the voice
Estimates the mortality of community-acquired pneumonia (CAP) and suggests inpatient vs. outpatient treatment. PSI is favored over CURB-65 by ATS/IDSA, but PSI is cumbersome to use — so many prefer CURB-65.
← Back to ABX SelectorAttempts to predict the risk of drug-resistant organisms (DRPs) in community-acquired pneumonia (CAP).
← Back to ABX SelectorHelps determine the need for the ICU in patients with community-acquired pneumonia (CAP), as outlined by the American Thoracic Society (ATS) / IDSA. Meeting ≥3 minor criteria suggests ICU-level care.
← Back to ABX SelectorAcute infection of the lung parenchyma acquired outside of the hospital; fever, productive cough, dyspnea, lung infiltrates. Typical pathogens include Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. Atypical pathogens include Mycoplasma pneumoniae, Chlamydia pneumoniae, Legionella pneumophila, and Coxiella burnetii (Q fever). Their treatments are incorporated into this algorithm.