Results The chief cause of death in pre-hospital trauma is traffic injury and injury by falling. The first two causes of sudden death is sudden death of unknown cause and cardiovascular disease.

Crashes caused by drivers falling asleep at the wheel tend to be high-speed ones, as they do not brake before crashing, increasing the risk of death or serious injury.

The brain injury model was induced by free-falling method, the brain water content was measured with drying wet method, the plasma IL-1, et were detected by radioimmunoassay.