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Related Concept Videos

Dialysis01:15

Dialysis

Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...

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Related Experiment Video

Updated: Jun 21, 2026

Microdialysis of Excitatory Amino Acids During EEG Recordings in Freely Moving Rats
08:47

Microdialysis of Excitatory Amino Acids During EEG Recordings in Freely Moving Rats

Published on: November 8, 2018

Microdialysis: is it ready for prime time?

J Clay Goodman1, Claudia S Robertson

  • 1Department of Pathology, Neurology and Neurosurgery, Baylor College of Medicine, Houston, Texas 77030, USA. jgoodman@bcm.tmc.edu

Current Opinion in Critical Care
|July 7, 2009
PubMed
Summary
This summary is machine-generated.

Cerebral microdialysis advances neurochemical monitoring in critical neurological conditions. Combining this technique with other methods offers unique insights into injured brain biochemistry and physiology.

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Last Updated: Jun 21, 2026

Microdialysis of Excitatory Amino Acids During EEG Recordings in Freely Moving Rats
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Area of Science:

  • Neuroscience
  • Critical Care Medicine
  • Biochemistry

Background:

  • Cerebral microdialysis is crucial for neurochemical research in intensive care units (ICUs).
  • Monitoring neurochemical changes is vital for understanding and managing critical neurological conditions.

Purpose of the Study:

  • To review recent advancements in cerebral microdialysis for investigational and clinical neurochemical monitoring.
  • To highlight its application in patients with critical neurological conditions.

Main Methods:

  • Cerebral microdialysis combined with PET, electrophysiological monitoring, and brain tissue oximetry.
  • Analysis of bedside measurable analytes including glucose, lactate, pyruvate, glutamate, and glycerol.
  • Investigational analysis of inflammatory biomarkers and nitric oxide metabolites.

Main Results:

  • Microdialysis use is reported in traumatic brain injury, subarachnoid hemorrhage, and infarction.
  • Recognized neurochemical effects of nonconvulsive status epilepticus and cortical depolarization waves.
  • Evolving understanding of analytes like glucose, lactate, and pyruvate, with the lactate-pyruvate ratio gaining prominence.

Conclusions:

  • Cerebral microdialysis is an established tool for neurochemical research in the ICU.
  • Its combination with other monitoring methods provides unique insights into injured brain derangements.
  • Further advancements position microdialysis for broader clinical application.