To preserve cerebral perfusion of a patient with an elevated intracranial pressure (ICP), which cerebral perfusion pressure (CPP) would the nurse maintain when suctioning the patient?

80 mm Hg

20 mm Hg

40 mm Hg

60 mm HG

Answer and Explanation

The Correct Answer is A

A.   Cerebral perfusion pressure (CPP) is crucial for maintaining adequate blood flow to the brain. A CPP of 80 mm Hg is typically considered the lower limit for preserving cerebral perfusion, particularly in patients with elevated ICP.
B.   20 mm Hg is too low and would indicate inadequate perfusion, which could result in brain ischemia.
C.   40 mm Hg is too low for optimal cerebral perfusion in critically ill patients with elevated ICP.
D.   60 mm Hg is also too low for optimal cerebral perfusion in critically ill patients with elevated ICP.

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Correct Answer is D

Explanation

A. CN V (Trigeminal nerve) is responsible for sensation in the face and motor function for chewing, not eye movement or pupil constriction.
B. CN VIII (Vestibulocochlear nerve) deals with hearing and balance, not eye function.
C. CN IV (Trochlear nerve) controls eye movement, but it does not typically affect the pupil in this way.
D. Cranial nerve III (Oculomotor nerve) controls most eye movements and pupil constriction. A fixed and dilated pupil typically indicates damage to CN III, which may be due to nerve compression, often from increased intracranial pressure or herniation.

A. Maintain the patient in a flat, supine position B. Restrain the patient in bed. C. Reduce the patient's environmental stimuli as much as possible D. Increase the patient's fluid intake

Correct Answer is C

Explanation

A. A flat supine position is not recommended for patients with meningitis; they should be kept at a 30- degree angle to reduce ICP.

B. Restraining the patient is unnecessary unless there is an immediate risk of harm, and it can cause distress.
C. Reducing environmental stimuli helps minimize discomfort and risk of seizures, especially in meningitis, which causes hypersensitivity to light and sound.
D. Fluid intake should be monitored carefully. Excessive fluids may increase ICP in a patient with meningitis.

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To preserve cerebral perfusion of a patient with an elevated intracranial pressure (ICP), which cerebral perfusion pressure (CPP) would the nurse maintain when suctioning the patient?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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