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

Increased ICP

Decreased cerebral blood flow (CBF)

Increased cerebral perfusion pressure (CPP)

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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Correct Answer is A

Explanation

A. Flashes of light and floaters are common early symptoms of retinal detachment as the retina begins to pull away from the underlying tissue.
B. Retinal detachment is usually painless; pain with eye movement is more associated with other eye conditions.
C. Increased glare is not typically associated with retinal detachment but may occur in cataracts.
D. Redness is usually a sign of conjunctivitis, not retinal detachment.

A. Nicardipine B. Dopamine C. Mannitol D. Phenytoin

Correct Answer is C

Explanation

A. Nicardipine is a calcium channel blocker used for blood pressure management, not for decreasing ICP.
B. Dopamine is used for shock or hypotension but does not address ICP.
C. Mannitol is an osmotic diuretic used to decrease ICP by drawing fluid out of the brain and reducing swelling.
D. Phenytoin is an anticonvulsant used to prevent seizures, but it does not directly affect ICP.

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

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Explanation

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Correct Answer is C

Explanation

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