Joseph et al used the revised assessment of bleeding and transfusion (RABT) score to identify a trauma patient who may require massive transfusion. The authors are from the University of Arizona.
Patient selection: trauma
Parameters:
(1) FAST test
(2) shock index (SI)
(3) pelvic fracture
(4) penetrating mechanism of injury (MOI)
Parameter
Finding
Points
FAST test
negative
0
positive
1
shock index
<= 1
0
> 1
1
pelvic fracture
no
0
yes
1
penetrating injury
no
0
yes
1
total score =
= SUM(points for all 4 parameters)
Interpretation:
• minimum score: 0
• maximum score: 4
• A score >= 2 was associated with the need for massive transfusion.
Performance:
• The area under the ROC curve is 0.83.
• At a score >= 2 the score has a sensitivity of 84% and specificity of 77%.
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