National Nursing Review : Nursing Study Resources & Health Tips

Residual pressure inside the skull, standard = 10 to 14 mmHg.
In the brain there are 3 compartments (parenchyma, fluid, Vascular), the total volume remains constant and is equal to the sum of the volume of the 3 compartments. The volume is inextensible, the compartments must compensate to maintain values in sustainable standards.

• The parenchymal compartment: Change is slow (dehydration or overhydration = edema), or appearance of a mass: tumor, hematoma
• The fluid compartment: The CSF is produced by the choroid plexus and absorbed in the upper longitudinal sinus. If alteration of this balance, there is a variation of the intra cranial pressure (ICP)

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