Li et al reported the CAPSO model for prehospital triage of a trauma patient. The authors are from the Medical School of the PLA and the Chinese PLA General Hospital in Beijing.
CAPSO = commands, age, pulse rate, systolic blood pressure, and peripheral oxygen saturation
Patient selection: trauma, age >= 16
Parameters:
(1) motor scale from the Glasgow Coma Scale (GCS), as measure for Command
(2) age in years
(3) pulse rate in beats per minute
(4) systolic blood pressure in mm Hg
(5) peripheral oxygen saturation in percent, from 0 to 100
|
Parameter
|
Finding
|
Points
|
|
motor scale from GCS
|
6
|
0
|
|
|
1 to 5
|
5
|
|
age
|
16 to 49 years
|
0
|
|
|
50 to 64 years
|
1
|
|
|
65 to 74 years
|
2
|
|
|
>= 75 years
|
3
|
|
pulse rate
|
>= 190 beats per minute
|
3
|
|
|
120 to 189 bpm
|
1
|
|
|
60 to 119 bpm
|
0
|
|
|
50 to 59 beats per minute
|
1
|
|
|
< 40 beats per minute
|
3
|
|
systolic blood pressure
|
>= 200 mm Hg
|
1
|
|
|
110 to 199 mm Hg
|
0
|
|
|
90 to 109 mm Hg
|
1
|
|
|
50 to 89 mm Hg
|
2
|
|
|
< 50 mm Hg
|
4
|
|
oxygen saturation
|
95 to 100%
|
0
|
|
|
90 to 94%
|
1
|
|
|
80 to 89%
|
2
|
|
|
< 80%
|
3
|
where:
• The handling of the motor score of the GCS is suspect. A person who localizes pain and person who is in coma are given the same number of points.
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 18
• The higher the score the more severe the trauma and the greater the risk of mortality.
|
Total Score
|
Risk Category
|
|
0 to 4
|
mild
|
|
5 to 10
|
moderate
|
|
> 10
|
severe
|
Performance:
• The area under the ROC curve is 0.90.
