<prompt> All of the following Clinical Features are seen in isolated head injury exceptVomitingHypertensionAirway compromiseSeizures  <response>: B Hypertension History of Head Injury reveals: Mechanism of injury Loss of consciousness or amnesia Level of consciousness at scene and on transfer Evidence of seizures Probable hypoxia or hypotension Pre-existing medical conditions Medications especially anticoagulants Illicit drugs and alcohol Causes of Brain Injury Hypoxia: P02 8 kPa Hypotension: Systolic blood pressure SBP 90 mmHg Raised intracranial pressure ICP: ICP 20 mmHg Low cerebral perfusion pressure CPP: CPP 65 mmHg Pyrexia Seizures Metabolic disturbance. 