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Which outcome would concern the nurse when the patient's calculated mean arterial pressure (MAP) is below 70 mm Hg?

A.

Increased ICP

B.

Decreased cerebral blood flow (CBF)

C.

Increased cerebral perfusion pressure (CPP)

D.

Normal intracranial pressure

Answer and Explanation

The Correct Answer is B

A.    Increased ICP would be a concern when the MAP falls below 70 mm Hg because reduced blood pressure can lead to inadequate cerebral blood flow and worsen ICP.
B.    Decreased cerebral blood flow (CBF) is also a concern with low MAP, but the priority is maintaining MAP at a sufficient level to ensure adequate perfusion.
C.    Increased CPP is unlikely with a low MAP, as CPP is a product of MAP and ICP.
D.    Normal ICP would be a good outcome; however, with a low MAP, the nurse should be concerned about insufficient cerebral perfusion and the risk of increased ICP.
 


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Related Questions

Correct Answer is A

Explanation

A. tPA (tissue plasminogen activator) should be administered within 3 to 4.5 hours of the onset of ischemic stroke symptoms, not 12 hours. Administering it after this window increases the risk of complications such as bleeding.
B. tPA is administered by intraarterial infusion is true, but it refers to a specific technique for certain stroke types.
C. tPA is administered IV is correct for intravenous administration in many cases of ischemic stroke.

D. tPA requires BP monitoring during and 24 hrs after the treatment is accurate as blood pressure control is critical when administering tPA.

Correct Answer is B

Explanation

A. Hyperopia (farsightedness) causes difficulty seeing close objects.
B. Myopia, or nearsightedness, causes difficulty seeing distant objects clearly while nearby objects remain clear.
C. Astigmatism results in blurred vision at all distances due to an irregularly shaped cornea.
D. Presbyopia is age-related difficulty in focusing on near objects due to lens rigidity.

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