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The accuracy of the Manchester Triage System in an emergency service

Precisión del Sistema de Triaje Manchester en un servicio de emergencia

ABSTRACT

Objective:

To verify the accuracy of the Manchester Triage System (MTS) and the outcomes of adult patients in an emergency hospital service.

Method:

Cross-sectional study, conducted through an inspection of records of risk classification of adult patients treated in the emergency service of a hospital.

Results:

The patients (n = 400) were classified according to priority levels, in red (0.8%), orange (58.2%), and yellow (41.0%). The accuracy levels between auditors and nurses were substantial for the flowchart (K = 0.75), and moderate for discriminating factors (k = 0.46) and priority levels (k = 0.42). The accuracy of the MTS was 68.8% with regard to priority levels. Regarding outcomes, 60% of patients were discharged, 37% were transferred to other units, and 3% died.

Conclusion:

The MTS proved to be a good predictor of the assessed outcomes, showing that 65.9% of Low Urgency patients progress to discharges, and 3.8% of High Urgency patients progress to death. The accuracy of the MTS was moderate, which suggests the need to implement inspections in emergency services.

Keywords
Triage; Emergency service, hospital; Data accuracy; Sensitivity and specificity; Clinical audit

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