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Related Concept Videos

Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
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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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A Detailed Protocol for Physiological Parameters Acquisition and Analysis in Neurosurgical Critical Patients
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Published on: October 17, 2017

Craniospinal pressure-volume dynamics in phantom models.

Marianne Schmid Daners1, Simone Bottan, Lino Guzzella

  • 1Department of Mechanical and Process Engineering, Institute for Dynamic Systems and Control, ETH Zurich, 8006 Zurich, Switzerland.

IEEE Transactions on Bio-Medical Engineering
|September 26, 2012
PubMed
Summary
This summary is machine-generated.

Accurate intracranial pressure (ICP) regulation is crucial for brain health. This study introduces a novel feedback-controlled phantom that precisely replicates physiological and pathological pressure-volume relationships, overcoming limitations of current models for evaluating medical devices.

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Medical Device Development

Background:

  • Intracranial pressure (ICP) regulation is vital for brain function.
  • Imbalances in cerebrospinal fluid dynamics can lead to conditions like traumatic brain injury and hydrocephalus.
  • Accurate modeling of craniospinal pressure-volume relationships is essential for evaluating medical interventions.

Purpose of the Study:

  • To develop a novel phantom capable of reproducing physiological and pathological intracranial pressure-volume relationships.
  • To overcome the limitations of existing phantoms in simulating craniospinal pressure dynamics.
  • To provide a more accurate platform for testing medical devices that affect cranial or spinal volumes.

Main Methods:

  • Development of a novel feedback-controlled phantom system.
  • Comparison of the novel phantom's performance against existing passive phantom methods.
  • Evaluation of pressure-volume curve reproduction during both large volume infusions and rapid oscillatory changes.

Main Results:

  • The novel feedback-controlled phantom accurately reproduces reference pressure-volume curves.
  • The phantom demonstrates superior precision compared to existing passive methods.
  • High fidelity in simulating both slow infusion and fast dynamic volume changes was achieved.

Conclusions:

  • The developed feedback-controlled phantom effectively replicates complex intracranial pressure-volume dynamics.
  • This novel phantom overcomes significant limitations of current models.
  • It offers a promising tool for the preclinical evaluation of medical procedures and devices in neurosurgery and critical care.