Which of the following statements regarding cerebral perfusion pressure (CPP) is correct?
A. CPP is the difference between mean arterial pressure and intracranial pressure.
B. The minimum CPP that is needed to adequately perfuse the brain is 40 mm Hg.
C. The body responds to a decrease in CPP by decreasing mean arterial pressure.
D. Cerebral edema or an intracranial hemorrhage will cause an increase in CPP.
Answer: A. CPP is the difference between mean arterial pressure and intracranial pressure.
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