Criteria of severity

Physiological variables

Glasgow score < 13; Systolic blood pressure < 90 mm∙Hg; Oxygen saturation < 90%.

Elements of kinetic

Ejecting a car; Another passenger died in the same accident; Falling more than 6 meters; Victim was thrown or crushed; Overall assessment (vehicle deformation, estimated speed, helmet absence, no belt).

Anatomical lesions

Penetrating trauma (head, neck, thorax, abdomen, pelvis, arm, thigh); Flail chest; Severe burns; smoke inhalation; Comminuted fracture of the pelvis; Suspected spinal damage; Amputation at the wrist; ankle or above; Acute limb ischaemia.

Prehospital resuscitation

Assisted ventilator; Vascular filling more colloid 1000 mL; Catecholamines.

Patient field traumatized

Patient over 65 years; Cardiac or coronary insufficiency; Respiratory failure, Pregnancy (second and third trimester); Disorder of blood dyscrasias.

The presence of a single criterion is sufficient to characterize the severity of the injury, except for the land where it is a case by case evaluation. Furthermore, the criteria of extreme gravity were defined because associated with very high mortality: systolic blood pressure below 65 mm∙Hg (mortality: 65%), Glasgow score of 3 (mortality: 62%) and oxygen saturation below 80% or stunning (mortality 76%).