Related Experiment Video
Updated: Aug 5, 2026

Custom-made Microdialysis Probe Design
Published on: July 21, 2015
Reduction of tissue edema by microdialysis
R M Odland1, A Umeda, S Stevens
1Department of Surgery, Loma Linda University School of Medicine, Calif, USA.
Objective:
This is the first report (to our knowledge) of the use of tissue microdialysis to reduce tissue edema. In this study, a hyperosmotic solution was perfused through microdialysis catheters, allowing direct treatment of interstitial edema by osmosis.
Design:
First, the catheter and perfusate characteristics were tested in vitro. A physiologic, controlled trial was then performed, with two outcome variables: osmolarity of the effluent and tissue water content.
Subjects:
Twenty male Sprague-Dawley rats. One rat was withdrawn.
Interventions:
Tissue microdialysis catheters were implanted in the rats. The control side of the animals was not perfused. The experimental side was perfused for 9 hours.
Results:
Osmolarity of the perfusate was reduced 16.5 mOsm after passing through the catheter, indicating that fluid was removed from the tissue. Tissue edema was reduced by an average 1.8 mL of fluid per 100 g of wet tissue.
Conclusions:
Tissue microdialysis removed tissue fluid and reduced edema. This treatment may have a beneficial effect on edematous tissues. Potential use and limitations of this therapeutic modality are discussed.
More Related Videos
08:17In Vivo Microdialysis Method to Collect Large Extracellular Proteins from Brain Interstitial Fluid with High-molecular Weight Cut-off Probes
Published on: September 26, 2018
08:21Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans
Published on: July 21, 2023
Related Concept Videos
Acute Kidney Injury V: Interprofessional Care
Cerebral Edema l: Introduction
Cytotoxic Edema: Pathophysiology