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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Damage to the right hemisphere, particularly the parietal and temporal lobes, can cause difficulty with recognition (prosopagnosia) and spatial awareness.
B. Right hemiparesis (weakness of the left side of the body) is common with left hemisphere damage, not right hemisphere damage.
C. Aphasia (language impairment) is typically associated with left hemisphere damage.
D. Difficulty reading (alexia) is more common with left hemisphere stroke, which controls language processing.
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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