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 B
Explanation
A. Increased intracranial pressure (ICP) typically causes hypertension (increased blood pressure) rather than hypotension.
B. A decreased level of consciousness is one of the hallmark signs of increased ICP, as pressure on the brainstem affects consciousness.
C. Tachypnea may occur with ICP, but it is less specific compared to decreased consciousness.
D. This can occur with brain injury but is not as directly indicative of ICP as decreased consciousness.
Correct Answer is A
Explanation
A. A hemorrhagic stroke, especially after a ruptured cerebral aneurysm, often presents with a sudden, severe headache. This headache is typically described as the "worst headache of my life."
B. Gradual onset of several hours is more typical of an ischemic stroke, not a hemorrhagic stroke.
C. History of neurologic deficits lasting less than 1 hour would suggest a transient ischemic attack (TIA), not a hemorrhagic stroke.
D. Maintains consciousness is not typical of a hemorrhagic stroke, as the client may lose consciousness or be altered in their mental status due to the bleeding.
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