Models of Biffl et al for Predicting the Risk of Carotid or Vertebral Artery Injury After Blunt Head and Neck Trauma

Description

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))

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Description

Specialty

ICD-10