Chart 1. Pneumonia Severity Index scoring.
| Demographic factors | Score | Laboratory and radiological findings | Score |
|---|---|---|---|
| Age, years | pH < 7.35 | +30 | |
| Men | n | Urea > 65 mg/L | +20 |
| Women | n − 10 | Sodium < 130 mEq/L | +20 |
| Nursing home residents | +10 | Glucose > 250 mg/L | +10 |
| Hematocrit < 30% | +10 | ||
| PO2 < 60 mmHg | +10 | ||
| Pleural effusion | +10 | ||
| Comorbidities | Physical examination | ||
| Neoplasia | +30 | Altered mental status | +20 |
| Liver disease | +20 | RR > 30 breaths/min | +20 |
| CHF | +10 | SBP < 90 mmHg | +20 |
| Cerebrovascular disease | +10 | Temperature < 35° or > 40°C | +15 |
| Kidney disease | +10 | HR ≥ 125 bpm | +10 |
Adapted from Corrêa et al. 5 ) CHF: congestive heart failure; and SBP: systolic blood pressure.