RESUMO
Impact between the brain and the cristae of the base normally results as a consequence of inertia when an obstacle is hit, followed by contusion, or intra-, sub- or extradural haematoma. The skull itself may be briken (usually at the interpilasters or the weak points of the pilasters) or dented. Denting resulted in the depression of a circular fragments or fragments, with compression of the dura mater or brain; this, in turn, may be contused, lacerated or even crushed. Spinal crash fractures usually involve the lumbar region. Neck fractures are rare. The picture may be one of clinical silence (local pain) or marked neurological involvement. Damage to the cord is expressed in the form of shock, complete flaccid para- or tetraplegia, complete loss of sensation below the lesion, loss of deep and superficial reflexes, urinary retention and rectal incontinence. Treatment is rendered complicated by profuse scalp haemorrhages, respiratory insufficiency requiring orotracheal intubation and assisted respiration, convulsions, which should be handled with care, since ordinary anti-epilepsy products may mask the onset of hypertension and haematoma. Swelling should be reduced with cortisones. Diuretics may be too brusque and lead to intracerebral haematoma. In the case of spinal injuries, particular care should be excercised in shifting the patient and conveying him to hospital. Where high neck lesions are suspected, the possibility of damage to the originating segments of the phrenic nerve must be borne in mind.
