Narenthorn Prehospital 5-Level Triage system developed by Narenthorn EMS center Rajavithi Hospital for triage the patients in prehospital environment substitute for 3-level triage system
To study effectiveness of triage system for prehospital patients by Narenthorn Prehospital 5-Level Triage (NP). To compare admission rate, death rate, and in-hospital length of stay between Prehospital 3-level triageand Narenthorn Prehospital 5-Level Triage.
Retrospective study by collecting data from Narenthorn EMS center’s database in 3 years period. 1,444 patients were categorized to 5 groups by Narenthorn Prehospital 5-Level Triage. Each groups of patients were compared with admission rate, death rate and in-hospital range of stay. Data analyses included descriptive statistics, Chi-square statistics and Odd ratio
An assessment under standard of NP, found out that after treatment of patient who had critical condition had shown higher admission rate and death rate than a group who had less critical condition. Admission rate: NP 1 51.42%, NP 2 66.93%, NP 3 42.45%, NP 4 26.66%, NP 5 100%. The sensitivity of NP 2 to identify admission was 58.2%, specificity 67.6%, Odd ratio = 2.90, 95% CI 2.32 – 3.62.Death rate: NP 1 66.66%, NP 2 22.36%, NP 3 4.3%, NP 4 0%, NP 5 25%. The sensitivity of NP 1 to identify death was 29.5%, specificity 97.1%, Odd ratio = 14.04, 95% CI 9.07 – 21.73. Higher acuity patients have in-hospital range of stay longer than lower acuity group.
Narenthorn Prehospital 5-Level Triage is able to use as a tool to triage prehospital patients, it is a method which has clear indicator when comparing with current method. Moreover, it is able to predict admission rate and death rate and result of treatment as effective as current system.