Traumatic Injury Femoral Blood Vessels | Model for Predicting Mortality & Postoperative Complications

Parameters used in stepwise logistic regression:

(1) Injury Severity Score (ISS)

(2) Glasgow Coma Score (GCS)

(3) age of the patient in years

(4) coagulopathy noted in the operating room (OR)

(5) number of hard vascular signs

(6) intimal disruption in a femoral artery

(7) thoracic injury

(8) hypotension in the operating room

(9) bony fracture

Hard signs of vascular injury:

(1) signs of distal ischemia

(2) absent or diminished pulses

(3) expanding hematoma

(4) palpable thrill

(5) pulsatile bleeding

(6) presence of a bruit

X =

= (3.1088 * (points for ISS)) + (2.5670 * (points for GCS)) + (2.1933 * (points for age)) + (2.1170 * (points for coagulopathy)) + (2.0876 * (points for hard vascular signs)) - 6.3057

probability of mortality =

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

Y =

= (2.5247 * (points for intimal disruption)) + (1.7701 * (points for thoracic injury)) + (1.6218 * (points for hypotension)) + (0.8590 * (points for bony fracture)) - 1.2110

probability of postoperative complications =

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