Reverse shock index multiplied by Glasgow Coma Scale score as a predictor of urgent trauma care and mortality in isolated severe traumatic brain injury: a 10-year nationwide validation study

The rSIG may serve as a simple and practical indicator for predicting urgent interventions, critical care, and mortality in patients with isolated severe TBIs. Its simplicity and rapid calculability support its potential use as a triage tool in prehospital settings and as a clinical diagnostic aid in hospital environments.