Paramedic PapersHome Trauma Prehospital NEWS beats shock index in trauma
Trauma
Prehospital NEWS beats shock index in trauma
Prehospital national early warning score outperforms shock index in predicting mortality and resource utilisation in adult trauma: A systematic review
Injury · Added 16 August 2026
Systematic review of 22 studies (184 to 1.4M patients) found prehospital NEWS showed excellent discrimination for short-term mortality (AUROC 0.87-0.96) and reliably predicted transfusion needs, outperforming Shock Index.
- Study type
- Systematic review
- Design
- Systematic review of prognostic accuracy studies
- Participants
- 22 studies, 184 to 1,439,221 adult trauma patients
- Main finding
- Prehospital NEWS showed excellent discrimination for short-term mortality (AUROC 0.87-0.96) and predicted transfusion and resource use; shock index performed worse (AUROC 0.48-0.79), with NEWS outperforming SI across all mortality endpoints
- Caveat
- Substantial heterogeneity in study designs, populations and outcome measures meant only narrative synthesis was possible
- Bottom line
- Supports current practice
Why it matters in Australia (High relevance). Directly relevant to prehospital trauma triage, large evidence base across diverse EMS systems with clear clinical application.
Learning goal
Strengthen my judgement on when prehospital physiology scores flag deterioration and transfusion needs in adult trauma.
More
- Topic: Trauma
- Daily scan: 16 August 2026
Related papers on Trauma
-
Trauma undertriage still high in Tromsø
Retrospective registry study assessing trauma undertriage using ISS ≥16 and NISS ≥16 as reference — found 15% undertriage (above the recommended <5%), with 63% of undertriaged patients meeting national criteria but not receiving trauma team activation, mostly low-energy falls.
-
Trauma quality improvement opportunities by cohort
Registry-based cohort study of 8,298 trauma patients found that blunt multisystem cohorts had the highest opportunities-for-improvement rates (10.6% with TBI, 16.9% without) across multiple quality domains including potentially preventable deaths and clinical judgement errors.
-
Prehospital whole blood improves shock physiology
Systematic review of 13 studies found prehospital whole blood consistently improved shock physiology (greater SI reduction, higher shock reversal rates) and showed potential survival benefit in high-risk and penetrating trauma patients, though overall mortality benefit was not uniform.
-
AI trauma triage in LMIC prehospital care
Scoping review mapping AI applications in LMIC prehospital trauma care found ML models achieved AUC 0.91-0.94 for mortality prediction and digital platforms reduced response times from 162 to 13 minutes in Bangladesh.