Patient selection: traumatic brain injury, age > 16 years, rated moderate or severe (GCS < 13 after resuscitation)
Outcome: unfavorable by Glasgow Outcome Scale Extended at 6 months (death = GOSE 1; other GOSE 2 to 4)
Parameters:
(1) cisterns
(2) age in years
(3) number of abnormal pupils (0, 1 or 2)
(4) number of contusions
(5) hypotensive episode
(6) abnormal fourth ventricle
(7) dominant lesion (epidural hematoma EDH, subdural hemorrhage SDH, contusion)
|
Parameter
|
Finding
|
Points for GOSE 1
|
Points for GOSE 2+
|
|
cisterns
|
compressed
|
0.741
|
0.223
|
|
|
absent
|
1.943
|
1.779
|
|
|
normal
|
0
|
0
|
|
age in years
|
|
0.047 * (age)
|
0
|
|
abnormal pupils
|
0
|
0
|
0
|
|
|
1
|
0.321
|
0
|
|
|
2
|
1.795
|
0
|
|
number of contusions
|
|
0.501 * (number)
|
0
|
|
hypotensive episode
|
no
|
0
|
0
|
|
|
yes
|
1.067
|
1.198
|
|
fourth ventricle
|
normal
|
0
|
0
|
|
|
abnormal
|
1.065
|
0
|
|
dominant lesion
|
EDH
|
0
|
0.372
|
|
|
SDH
|
0
|
1.415
|
|
|
contusion
|
0
|
1.320
|
|
|
none
|
0
|
0
|
value of X =
= SUM(points for all of the GOSE 1 parameters) - 4.795
value of Y =
= SUM(points for all of the GOSE 2-4 parameters) - 2.213
probability of death =
= 1 / (1 + EXP((-1) * X))
probability of GOSE 2 to 4 =
= 1 / (1 + EXP((-1) * Y))
