Scoring System for CAP predicts severe disease

Am J Respir Crit Care Med 2006 174: 1249-1256

Ph < 7.30 13 points

SBP < 90 11 points

RR > 30 9 points

PaO2/FiO2 ratio < 250 6 points

BUN > 30 5 points

AMS 5 points

Age > 80 5 points

Multilobar/b/l lung affectation on CXR 5 points

< 10 points: fewer than 3% of patients developed severe pneumonia

10-19 points: 10%

20-29 points: 40%

> 30 points: 50%