A client's blood pressure is 180/120 mm Hg. How will the client's neurologic system adapt to this increase in blood pressure?
1. Arteries in the brain dilate
2. Cerebrospinal fluid increases
3. Arteries in the brain constrict
4. Cerebrospinal fluid decreases
3
Rationale 1: The brain has autoregulation, meaning it is able to regulate its own blood flow by arteriolar dilation when blood pressure falls.
Rationale 2: Cerebrospinal fluid production is not altered by blood pressure.
Rationale 3: The brain has autoregulation, meaning it is able to regulate its own blood flow by arteriolar constriction when blood pressure rises.
Rationale 4: Cerebrospinal fluid production is not altered by blood pressure.
Global Rationale: The brain has autoregulation, meaning it is able to regulate its own blood flow by arteriolar dilation when blood pressure falls or constriction when blood pressure rises. Cerebrospinal fluid production is not altered by blood pressure.
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