Intracranial pressure

The pressure of the subarachnoidal fluid, which fills the space between the skull and the brain.


Force exerted by brain tissue, cerebrospinal fluid, and blood within the cranial vault.


The pressure on the brain inside the skull.


The pressure maintained by the brain tissue, intracellular and extracellular fluid, cerebrospinal fluid and blood. An increase in intracranial pressure may occur as a result of inflammation, injury, haemorrhage, or tumour in the brain tissue as well as of some congenital conditions. The pressure is measured by lumbar puncture, in which a syringe attached to a mamometer (pressure-measuring device) is inserted into the cerebrospinal fluid surrounding the lower part of the spinal cord. Where continuous pressure monitoring is necessary, an in-dwelling device can be implanted into a cerebral ventricle. Normal pressure is around 10 mm of mercury (Hg), with the acceptable upper limit being 25 mm Hg. Raised intracranial pressure causes lethargy, vomiting and/or headache. If severe, it can lead to death by pressure on the vital structures controlling heartbeat and breathing, localized in the hindbrain.


The pressure of the cerebrospinal fluid in the subarachnoid space between the skull and the  rain. The pressure is normally the same as that found during lumbar puncture.


The force applied by the cerebrospinal fluid, which acts as a protective and nourishing cushion for the brain and spinal cord. Intracranial pressure (ICP) can be evaluated through a lumbar puncture. In cases of severe head injury or certain neurosurgeries, continuous monitoring of ICP can be achieved by placing a transducer through the skull.


Elevated ICP might stem from causes like a brain tumor, head injury, meningitis, or benign intracranial hypertension. If left untreated, this condition could lead to lasting neurological harm and might pose a significant risk, potentially becoming life-threatening in certain instances.


Intracranial pressure, which is the pressure inside the skull.


 


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