RAPID Score (pleural infection)
RAPID score (Rahman 2014): risk-stratifies pleural infection (0-7) from renal, age, purulence, infection source, and dietary/albumin factors.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Serum urea band
- > 8 mmol/L (+2)
- Age
- 74
- Serum albumin
- 24
- Non-purulent pleural fluid
- Yes
- Hospital-acquired infection
- Yes
Result: RAPID 7/7: high risk (derivation-cohort 3-month mortality ~47%).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Bands
- low 0-2, medium 3-4, high 5-7, with derivation-cohort 3-month mortality of approximately 1.5%, 17%, and 47%.
What you enter
- Serum urea band
- Age (years)
- Serum albumin (g/L)
- Non-purulent pleural fluid
- Hospital-acquired infection
How this is calculated
- Components
- Renal (urea band), Age band, Purulence (non-purulent +1), Infection source (hospital-acquired +1), and Dietary albumin (< 27 g/L +1), summed 0-7.
Rahman NM, Kahan BC, Miller RF, Gleeson FV, Nunn AJ, Maskell NA. A clinical score (RAPID) to identify those at risk for poor outcome at presentation in patients with pleural infection. Chest. 2014;145(4):848-855. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.