Dual-Source RAG Improves Emergency Triage Accuracy

Researchers developed MECR‑RAG, a dual‑source retrieval‑augmented generation system combining Hong Kong triage guidelines and 3,000 past cases, and retrospectively evaluated it in 2026 on 236 emergency department triage encounters. MECR‑RAG achieved QWK 0.902 and 80.2% accuracy versus a prompt-only LLM's QWK 0.801 and 54.2% accuracy, reduced overtriage, and improved sensitivity for high-severity patients.