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Updated: Sep 26, 2026
Custom-made Microdialysis Probe Design
Published on: July 21, 2015
Microdialysis: a new technique to monitor perioperative human peritoneal mediator production
Jutta Riese1, Stefanie Boecker, Werner Hohenberger
1Department of Surgery, University of Erlangen-Nuremberg, Erlangen, Germany.
Background:
Standardized methods to measure peritoneal cytokine production do not exist. This feasibility study examines the use of microdialysis to monitor perioperative peritoneal mediator production in patients following abdominal surgery for infective or non-infective conditions.
Materials And Methods:
At the beginning of the operation, a microdialysis catheter was placed between the patient's parietal peritoneum and the muscular fascia of the abdominal wall in the connective tissue bed. The device was irrigated (18 microL/h, Ringer's solution/0.05% albumin) for up to 7 days. Samples of the dialysate were collected at least twice a day, and concentrations of interleukin (IL)-6 and monocyte chemoattractant protein (MCP)-1 were measured by an ELISA technique. Four of the nine patients included had proved intra-abdominal infections.
Results:
In uninfected patients, IL-6 concentrations peaked 8 h after skin incision (mean +/- SEM): 1696 +/- 1292 pg/mL and dropped rapidly to significantly lower concentrations (less than 400 pg/mL) thereafter. MCP-1 concentrations also peaked at 8 h (12787 +/- 6893 pg/mL). In the following days, MCP-1 concentrations were variable between 1000 and 5000 pg/mL. In infected patients, early IL-6 production tended to be higher and that of MCP-1 tended to be lower than in uninfected patients. Catheters were removed between day four and day seven when the system failed or when the patients became mobile without any clinical symptoms of complications.
Conclusion:
The samples derived from microdialysis were suitable to measure sub-peritoneal mediator profiles during surgery and up to 7 days postoperatively. Microdialysis data should be validated for a potential correlation with the clinical course.
Insights
Microdialysis effectively measured peritoneal cytokines like IL-6 and MCP-1 after surgery. This technique shows promise for monitoring patient recovery and detecting infections during the perioperative period.
Area of Science:
- Surgical Innovation
- Peritoneal Physiology
- Biomarker Monitoring
Background:
- Lack of standardized methods for measuring peritoneal cytokine production.
- Need for real-time monitoring of inflammatory mediators in the perioperative period.
Purpose of the Study:
- To assess the feasibility of using microdialysis to monitor peritoneal mediator production.
- To evaluate perioperative cytokine profiles in patients undergoing abdominal surgery.
Main Methods:
- Microdialysis catheter insertion into the peritoneal cavity.
- Continuous monitoring and collection of dialysate for up to 7 days.
- Quantification of interleukin-6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1) using ELISA.
Main Results:
- IL-6 and MCP-1 levels peaked at 8 hours post-incision in uninfected patients.
- Infected patients showed trends towards higher early IL-6 and lower early MCP-1.
- Microdialysis provided measurable mediator profiles throughout the 7-day monitoring period.
Conclusions:
- Microdialysis is a feasible method for measuring sub-peritoneal mediators post-surgery.
- The technique allows for monitoring of cytokine profiles up to 7 days postoperatively.
- Further validation is needed to correlate microdialysis data with clinical outcomes.
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