Pressure exerted by fluids inside the skull and on the brain
Medical condition
Intracranial pressure
Severely high ICP can cause the brain to herniate.
Types
Increased, normal, decreased
Intracranial pressure (ICP) is the pressure exerted by fluids such as cerebrospinal fluid (CSF) inside the skull and on the brain tissue. ICP is measured in millimeters of mercury (mmHg) and at rest, is normally 7–15 mmHg for a supine adult.[1] The body has various mechanisms by which it keeps the ICP stable, with CSF pressures varying by about 1 mmHg in normal adults through shifts in production and absorption of CSF.
Changes in ICP are attributed to volume changes in one or more of the constituents contained in the cranium. CSF pressure has been shown to be influenced by abrupt changes in intrathoracic pressure during coughing (which is induced by contraction of the diaphragm and abdominal wall muscles, the latter of which also increases intra-abdominal pressure), the valsalva maneuver, and communication with the vasculature (venous and arterial systems).
Intracranial hypertension (IH), also called increased ICP (IICP) or raised intracranial pressure (RICP), is elevation of the pressure in the cranium. ICP is normally 7–15 mm Hg; at 20–25 mm Hg, the upper limit of normal, treatment to reduce ICP may be needed.[2]
^Steiner LA, Andrews PJ (July 2006). "Monitoring the injured brain: ICP and CBF". British Journal of Anaesthesia. 97 (1): 26–38. doi:10.1093/bja/ael110. PMID 16698860.
Intracranialpressure (ICP) is the pressure exerted by fluids such as cerebrospinal fluid (CSF) inside the skull and on the brain tissue. ICP is measured...
The monitoring of intracranialpressure (ICP) is used in the treatment of a number of neurological conditions ranging from severe traumatic brain injury...
intracranial hypertension, is a condition characterized by increased intracranialpressure (pressure around the brain) without a detectable cause. The main symptoms...
on the cause and includes monitoring of the person's airway and intracranialpressure, proper positioning, controlled hyperventilation, medications, fluid...
condition of a normal homeostatic response of hyperemia) can raise intracranialpressure (ICP), which can compress and damage delicate brain tissue. Too...
A traumatic brain injury (TBI), also known as an intracranial injury, is an injury to the brain caused by an external force. TBI can be classified based...
nervous system response to increased intracranialpressure (ICP) that results in Cushing's triad of increased blood pressure, irregular breathing, and bradycardia...
the spinal cord via lumbar puncture. This can be used to test the intracranialpressure, as well as indicate diseases including infections of the brain...
too little pressure could cause brain tissue to become ischemic (having inadequate blood flow), and too much could raise intracranialpressure (ICP). The...
this therapy is limited. The disease may be complicated by raised intracranialpressure, which may warrant surgical intervention such as the placement of...
space for the growing brain, craniosynostosis results in increased intracranialpressure leading possibly to visual impairment, sleeping impairment, eating...
pressure they place on the brain: As intracranialpressure rises, blood is squeezed into the dural venous sinuses, raising the dural venous pressure and...
papilloedema is optic disc swelling that is caused by increased intracranialpressure due to any cause. The swelling is usually bilateral and can occur...
increased intracranialpressure, a condition called Cushing's triad seen in people after head trauma with increased intracranialpressure. Common causes...
those that indicate a rise in intracranialpressure caused by a large mass (due to hematoma expansion) putting pressure on the brain. These symptoms include...
leads to an increase in intracranialpressure (ICP). The ICP gradually falls but remains slightly elevated, and the CSF pressure reaches a high normal level...
also be used therapeutically in some conditions. Increased intracranialpressure (pressure in the skull) is a contraindication, due to risk of brain matter...
Chiari malformation, and other conditions associated with raised intracranialpressure. Use of this surgery is controversial. The procedure evolved from...
cause SIH. While this symptom can be referred to as intracranial hypotension, the intracranialpressure may be normal, with the underlying issue instead...
visual impairment, is hypothesized to be a result of increased intracranialpressure (ICP), although, experiments directly measuring ICP in parabolic...
algorithms to calculate the correlation between arterial blood pressure and intracranialpressure. PRx assesses for correlations at low frequencies, below 0...
An intracranial aneurysm, also known as a cerebral aneurysm, is a cerebrovascular disorder in which weakness in the wall of a cerebral artery or vein causes...
incontinence – despite very low intracranialpressure (ICP). Low pressure hydrocephalus appears to be a more acute form of normal pressure hydrocephalus. If not...
used in neurosurgery to treat hydrocephalus and relieve elevated intracranialpressure when the normal flow of cerebrospinal fluid (CSF) inside the brain...
that cause a mass effect and increase intracranialpressure (ICP): these include traumatic brain injury, intracranial hemorrhage, or brain tumor. Herniation...
in a greater loss of function. Headaches as a result of raised intracranialpressure can be an early symptom of brain cancer. However, isolated headache...
can be raised intracranialpressure through mechanisms such as a subdural haematoma. In these cases, the raised intracranialpressure can cause herniation...
Global Information