ICU and Critical Care · Pulmonology · Anaesthesiology
Rapid Shallow Breathing Index (RSBI) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
/min
Allowed range: 5–60 /min
Quick picks
L
Allowed range: 0.1–1.5 L
Quick picks
Result
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Clinical inputs
- Respiratory rate (/min)Accepted range: 5 to 60
- Tidal volumeAccepted range: 0.1 to 1.5
Primary source
Yang KL, Tobin MJ. A prospective study of indexes predicting the outcome of trials of weaning from mechanical ventilation. N Engl J Med. DOI: 10.1056/NEJM199105233242101. PMID: 2023603. Scope: rapid shallow breathing index = respiratory frequency (breaths/min) ÷ tidal volume (liters); values ≤105 breaths/min/L predicted successful weaning more accurately than other indexes in the derivation cohort. (1991)
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