Bissl et al identified risk factors for injury to the carotid and/or vertebral artery after blunt trauma to the head and neck. They used multiple logistic regression to develop models predicting the risk of cerebrovascular injury based on these risk factors. The authors are from the University of Colorado.
Parameters:
(1) Glasgow Coma Score (GCS)
(2) petrous fracture
(3) cervical spine fracture
(4) diffuse axonal injury
(5) LeFort II or III fracture
Parameter |
Finding |
Points |
Glasgow coma score (GCS) |
7 to 15 |
0 |
|
3 to 6 |
0.68 |
petrous fracture |
absent |
0 |
|
present |
0.97 |
cervical spine fracture |
absent |
0 |
|
present |
2.67 |
diffuse axonal injury |
absent |
0 |
|
present |
1.13 |
LeFort II and/or III fracture |
absent |
0 |
|
present |
1.31 |
X =
= (points for GCS) + (points for petrous fracture) + (points for diffuse axonal injury) + (points for LeFort fracture) - 1.39
probability of carotid artery injury =
= 1 / (1 + EXP((-1) * X))
Y =
= (points for cervical spine fracture) - 3.37
probability of vertebral artery injury =
= 1 / (1 + EXP((-1) * Y))
Specialty: Surgery, orthopedic, Emergency Medicine, Critical Care, Surgery, general, Cardiology
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