A patient suffering from traumatic brain injury in the ICU has a PtO₂ (tissue oxygen) value of 10 to 15 mm Hg, what does this indicate? A) Normal intracranial pressure B) Ischemic brain damage C) Normal cerebral perfusion D) Cerebral hyperperfusion

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Quizplus · Accepted Answer

In patients with traumatic brain injury, brain tissue oxygen (PtO₂) values when intracranial pressure and cerebral perfusion are normal are between 25 and 30 mm Hg. The critical threshold for ischemic brain damage and poor outcome is suspected to be around a brain PtO₂ of 10 to 15 mm Hg.

A Patient Suffering from Traumatic Brain Injury in the ICU