Dence reported in the first 72 hours after injury (Adelson and Kochanek, 1998). Hence the other two components must compensate by diverting CSF (producing less and reabsorbing more) and diverting some venous blood from the cerebral circulation into the dural venous sinuses (Marcoux, 2005). If the pressure continues to increase, the result is herniation of the brain through anatomical openings in the skull (from areas of high to low pressure). Downward herniation through the foramen magnum, results in severe brain stem compression and ultimately brain stem death (Robinson, 1997; Vincent and Buerre, 2005).