The Medical Emergency Triage and Treatment System (METTS) triages a patient in the Emergency Department based on vital sign and chief complaint.
Parameters for vital sign assessment:
(1) airway (A)
(2) respiration (B, breathng)
(3) circulation (C)
(4) disability (D) related to CNS
(5) exposure (E), based on body temperature in °C
|
Parameter
|
Green
|
Yellow
|
Orange
|
Red
|
|
airway
|
NA
|
NA
|
NA
|
compromised
|
|
breathing
|
9 to 25 bpm; and saturation > 95% on room air
|
26 to 30 bpm; 91 to 95% saturation on room air
|
26 to 30 bpm; < 90% saturation on room air
|
< 8 or > 30 bpm; or< 90% saturation on oxygen
|
|
circulation
|
51 to 109 bpm
|
40 to 50; or 110 to 120 bpm
|
< 40 or 121-130 bpm
|
> 130 bpm or SBP < 90 mm Hg
|
|
disability
|
alert
|
confusion
|
2 to 3 seizures
|
> 3 seizures or ongoing
|
|
body temp
|
35.1 to 38.4°C
|
38.5 to 41°C
|
< 35.1 or > 41°C
|
NA
|
where:
• The data for breathing (respiratory rate and oxygen saturation) is unclear for orange and yellow.
