AI emergency triage.
Before they arrive.
Patients describe symptoms from any device. Rex assesses severity using ESI-aligned protocols, routes them to the right facility, and gives them a queue number — in under 8 minutes.
ESI-Aligned Classification
Five severity levels. Intelligent routing.
Rex classifies patients using the Emergency Severity Index framework — the same 5-level system used by triage nurses. Each level maps to a facility type and expected wait time.
Resuscitation
Immediate life-threatening. Cardiac arrest, active hemorrhage, respiratory failure.
Routes To
Nearest Level I Trauma Center
Target
Immediate
Emergent
High risk of deterioration. Chest pain, stroke symptoms, severe allergic reaction.
Routes To
Nearest ER with specialist on-call
Target
<10 min
Urgent
Stable but needs workup. Abdominal pain, moderate injury, high fever with comorbidities.
Routes To
ER or large urgent care
Target
<30 min
Less Urgent
Low complexity. Simple laceration, sprained ankle, minor burns, UTI symptoms.
Routes To
Urgent care preferred
Target
<60 min
Non-Urgent
Minor complaint. Cold symptoms, prescription refill, minor rash.
Routes To
Telehealth or walk-in clinic
Target
Scheduled
Capabilities
Built for emergency medicine.
Conversational Assessment
Rex asks plain-language follow-up questions based on the chief complaint. No medical jargon. No dropdown menus. Just a conversation.
Transparent Reasoning
Every triage decision comes with an explanation. Patients understand why they were classified at a specific level and why a facility was recommended.
Proximity + Capability Routing
Rex doesn't just find the closest ER. It matches severity to facility capability — trauma centers for trauma, urgent care for minor injuries.
Queue Number Assignment
After triage, the patient gets a queue number and estimated wait time. The receiving ER sees them in their Rex Command dashboard immediately.
HIPAA-Compliant
All symptom data encrypted at rest and in transit. Full audit trail. BAA available. No patient data used for model training.
Emergency Override
If Rex detects keywords indicating immediate danger (chest pain, difficulty breathing, unresponsive), it bypasses normal flow and advises calling 911.
Patient Experience
What the patient sees.
Rex
What's bringing you in today? Describe your main concern.
Patient
I've had sharp chest pain for the last 2 hours. It gets worse when I breathe deeply.
Rex
I'm taking this seriously. A few quick questions: • Are you short of breath right now? • Any pain radiating to your arm, jaw, or back? • History of heart conditions or blood clots?
Patient
Yes, a little short of breath. No radiating pain. No heart history but I'm on birth control.
Rex
Based on your symptoms — pleuritic chest pain with dyspnea and hormonal risk factor — I'm classifying this as ESI Level 2 (Emergent). This needs evaluation within 10 minutes. I'm routing you to Memorial Hospital ER (2.3 mi) — they have cardiology and pulmonology on-call. Your queue number: H-2847 Estimated wait: ~12 minutes Proceed to pre-registration to save time on arrival.
Deploy AI triage at your facility.
Limited pilot program. Priority access for Level I and II trauma centers.