Akaraborworn et al reported a score for predicting massive transfusion in a trauma patient. The authors are from Prince of Songkla University and Thammasat University Hospital in Thailand.
Patient selection: trauma patient
Parameters:
(1) age in years
(2) base excess in mEq/L
(3) serum lactate in mmol/L
(4) heart rate in beats per minute
Parameters
Findings
Points
age in years
< 60 years
0
>= 60 years
3
base excess
> -10 mEq/L
0
<= -10 mEq/L
2.5
serum lactate
<= 4 mmol/L
0
> 4 mmol/L
2
heart rate
< 105 beats per minute
0
>= 105 beats per minute
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 8.5
• A score of 6 is associated with a 50% chance and a score of 8 an 80% chance of massive transfusion.
Total Score
Risk Group
Positive LR
< 4
low
0.4
>= 4
high
6.7
Performance:
• The area under the ROC curve is 0.845.
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