Model of Salim et al for Predicting Therapeutic Angiography in a Patient with a Pelvic Fracture

 

Parameters identified during stepwise logistic regression:

(1) gender

(2) type of pelvic fracture

(3) number of minutes that the systolic blood pressure < 100 mm Hg during the first 2 hours

Parameter	Finding	Points
gender	male	0
	female	1
type of pelvic fracture	without sacroiliac joint disruption	0
	with sacroiliac joint disruption	1

 

where:

• Sacroiliac joint disruption indicates vertical shear.

• Systolic blood pressure < 100 mm Hg indicates hemodynamic instability.

• The time frame for hypotension was not specified as to time from incident to time from arrival at the hospital.

 

X =

= (1.361 * (points for gender)) + (1.497 * (points for pelvic fracture type)) + (0.354 * ((number of minutes) / 15)) - 1.408

 

probability of therapeutic angiography =

= 1 / (1 + EXP((-1) * X))