What is the normal intracranial pressure range?

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Multiple Choice

What is the normal intracranial pressure range?

Explanation:
Normal intracranial pressure in adults is typically around 7-15 mm Hg, with upper limits often cited near 20 mm Hg. The range of 10-15 mm Hg sits squarely within this normal window and aligns with how clinicians think about a resting, normal ICP. This makes it the best choice among the options because it reflects normal physiology rather than low or elevated pressures. A range like 5-10 mm Hg is near the lower end and could be considered lower-normal in some contexts, while 20-25 mm Hg or 30-35 mm Hg indicate intracranial hypertension and are not normal.

Normal intracranial pressure in adults is typically around 7-15 mm Hg, with upper limits often cited near 20 mm Hg. The range of 10-15 mm Hg sits squarely within this normal window and aligns with how clinicians think about a resting, normal ICP. This makes it the best choice among the options because it reflects normal physiology rather than low or elevated pressures. A range like 5-10 mm Hg is near the lower end and could be considered lower-normal in some contexts, while 20-25 mm Hg or 30-35 mm Hg indicate intracranial hypertension and are not normal.

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