Renal Angina Index (RAI) Calculator
- Renal Angina Index (RAI): Explanation and Clinical Context
The Renal Angina Index (RAI) is a validated tool to predict the development of severe acute kidney injury (AKI) in critically ill patients, especially pediatric ICU patients.
It is calculated by multiplying a Risk Score (based on underlying condition severity) with an Injury Score (based on early signs such as fluid overload or rise in creatinine).
RAI > 8 indicates high risk, 4–7 moderate risk, and <4 low risk of developing severe AKI within 72 hours.
This tool allows clinicians to stratify patients early, guide monitoring, and implement preventive interventions.
Reference:
Goldstein SL, Chawla LS, et al. Renal angina and the assessment of acute kidney injury risk in critically ill children. Pediatr Crit Care Med. 2010;11:396–402. doi:10.1097/PCC.0b013e3181c1e4e6
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