<prompt> Which of the following can cause secondary brain injuryHypoxiaIntracranial pressure 30mm HgHypotensionAll of the above  <response>: Causes of secondary brain injury- Hypoxia: PO2 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 