Based on recommendations put forth by the Brain Trauma Foundation and the American Academy of Neurosurgeons, what should be the minimum Paco2 to which a TBI patient should be hyperventilated?
A. 35 mm Hg
B. 25 mm Hg
C. less than 25 mm Hg
D. Hyperventilation must not be performed.
ANS: A
A. Correct response: Hyperventilation has not been shown to have a beneficial effect on outcome. In fact, patients hyperventilated to a Paco2 of 25 mm Hg for 5 days had a worse outcome than those who were not. Recommendations from the Brain Trauma Foundation and the American Academy of Neurosurgeons state that a Paco2 of less than 35 mm Hg should be prevented, especially during the first 24 hours after injury, when risk of cerebral ischemia is highest.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.?
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