Intracranial pressure (ICP): Difference between revisions
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## ICP & Intracranial vol. | |||
- Brain parenchyma: 1400 ml (80% total, 10% solid, 70% tissue water) | |||
- CBV: 150 ml (10% total) | |||
- CSF: 150 ml (10% total) | |||
- Normal ICP: <10-15 mmHg, varies w/ age, position, straining, & coughing | |||
(tot. ~1700 ml) | |||
=== '''Davson equation''' === | === '''Davson equation''' === | ||
<blockquote>'''ICP = If * Rout - PSS'''</blockquote> | <blockquote>'''ICP = If * Rout - PSS'''</blockquote> | ||
Revision as of 17:52, 12 September 2023
- ICP & Intracranial vol.
- Brain parenchyma: 1400 ml (80% total, 10% solid, 70% tissue water) - CBV: 150 ml (10% total) - CSF: 150 ml (10% total) - Normal ICP: <10-15 mmHg, varies w/ age, position, straining, & coughing (tot. ~1700 ml)
Davson equation
ICP = If * Rout - PSS
- resistance to cerebrospinal fluid outflow (Rout)
- formation of cerebrospinal fluid (If)
- sagittal sinus pressure (PSS)