What is the typical intracranial pressure (ICP) monitoring range mentioned?

• A. 5-10 mmHg
• B. 15-25 mmHg
• C. 0-5 mmHg
• D. 20-30 mmHg

Answer: (A)

Understanding normal ICP helps you interpret monitoring values. In adults lying horizontally, normal intracranial pressure is about 5–15 mmHg, and many clinical guidelines cite roughly 5–10 mmHg as a typical target range during monitoring. This range sits safely inside the normal spectrum and provides a buffer before pressures rise into intracranial hypertension. If ICP approaches the 20–25 mmHg range or higher, that's a red flag prompting intervention to lower pressure and protect cerebral perfusion. Readings near 0–5 mmHg are unusually low and may reflect measurement issues or atypical conditions, not a standard target.