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Increased Intracranial Pressure l: Introduction

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Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...

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Related Experiment Video

Updated: Jul 14, 2026

A Craniotomy Surgery Procedure for Chronic Brain Imaging

A Craniotomy Surgery Procedure for Chronic Brain Imaging

Published on: February 15, 2008

A Year's Work in Intracranial Surgery

¹Neurological Surgeon, Victoria Infirmary; Consulting Neurological Surgeon, Glasgow Eye Infirmary; Honorary Consulting Neurological Surgeon, Royal Hospital for Sick Children; Surgeon, Stobhill Hospital.

Glasgow Medical Journal

|November 16, 2018

Summary

No abstract available in PubMed .

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