What happens in stage four of intracranial pressure?
The brain tissue remains stable and does not shift.
The cerebrospinal fluid levels decrease significantly.
There is an increase in cerebral blood flow.
Brain herniation occurs as the brain tissue shifts from an area of greater pressure to an area of lower pressure
The Correct Answer is D
A. In stage four, the brain tissue no longer remains stable; it shifts due to high pressure.
B. CSF levels may decrease initially in compensation but are not the hallmark of stage four.
C. Cerebral blood flow decreases due to increased pressure, leading to ischemia.
D. Stage four is marked by brain herniation, where increased intracranial pressure causes brain tissue to shift from high-pressure areas to lower-pressure areas, which can be life-threatening.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Thin and flexible walls are not typical in diastolic heart failure.
B. Weak and non-contractile describes systolic heart failure.
C. In diastolic heart failure, the left ventricle becomes thickened and stiff, impairing its ability to relax and fill properly.
D. Enlarged and dilated ventricles are characteristic of systolic heart failure, not diastolic.
Correct Answer is D
Explanation
A. 20-30 mmHg is above the normal range and indicates elevated ICP, which can be dangerous.
B. 40-50 mmHg is critically high and requires urgent medical intervention.
C. 50-100 mmHg is dangerously high and not compatible with normal brain function.
D. Normal intracranial pressure ranges from 5 to 15 mmHg. Values within this range indicate normal pressure within the skull, allowing for proper brain perfusion and function.
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