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Normal ICP 5-15 mmHg — FRCA Primary MCQ

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EasyPhysiology - NeurophysiologyNormal ICP 5-15 mmHgFRCA Primary

The normal intracranial pressure in a supine adult is:

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Correct answer: E — 5-15 mmHg

Normal ICP in a supine adult is 5-15 mmHg (7-20 cmH2O). ICP >20 mmHg is considered elevated and requires treatment. ICP >40 mmHg is severely elevated. The Monro-Kellie doctrine states that an increase in any intracranial compartment must be compensated to prevent ICP rise.

Reference: Power Kam 2018 Principles of Physiology for the Anaesthetist