Question 1

What counts as a 'resource' in ESI?

Accepted Answer

Resources include: labs (blood, urine), ECG, X-ray, CT/MRI/ultrasound, IV fluids, medications (IV or nebulised), specialty consult, simple procedure (laceration repair, catheterisation), complex procedure (central line, intubation), and blood administration. Telephone consultation, discharge instructions, and oral medications are not counted as resources.

Question 2

Can a patient be triaged ESI 2 without meeting danger zone vital signs?

Accepted Answer

Yes — ESI 2 is assigned if the patient is in a high-risk situation (Step B). This includes severe pain (≥7/10), new-onset confusion/lethargy/disorientation, or any presentation that the triage nurse judges as high-risk even with normal vitals. Clinical judgement is a legitimate ESI override.

Question 3

Is ESI validated for paediatric triage?

Accepted Answer

Yes — the ESI has been validated for paediatrics (Version 4 includes paediatric-specific vital sign thresholds). However, the Manchester Triage System and the Paediatric Canadian Triage and Acuity Scale (PaedCTAS) are more widely used for paediatric populations globally.

Question 4

How reliable is ESI between different triage clinicians?

Accepted Answer

Inter-rater reliability for ESI is good, with weighted kappa values of 0.7–0.85 in trained clinicians. Reliability improves with standardised training programmes (including the ESI Handbook, online modules, and case-based exercises). Formal ESI training and annual competency assessment are recommended.