Microdialysis coupled with an embedded systems controller and CMOS image sensor

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Clinical Diagnostics

Background:

• Continuous monitoring of blood metabolites and drugs aids disease management and reduces hospital stays.
• Intravenous microdialysis enables real-time blood sampling for therapeutic drug monitoring and diagnostics.
• Current microdialysis methods lack real-time error detection, limiting clinical utility.

Purpose of the Study:

• To develop a portable microdialysis system with real-time performance monitoring.
• To enhance the accuracy and robustness of microdialysis for clinical applications.
• To demonstrate the integration of microdialysis with lab-on-a-chip technologies for continuous diagnostics.

Main Methods:

• A portable microdialysis system was developed using an embedded controller and CMOS image sensor.
• A fluorescent tracer was employed to gauge membrane diffusive capacity and monitor variability.
• The system was tested for its ability to detect probe performance deterioration and generate alarms.
• Integration with a microparticle-based turbidimetric immunoassay for vancomycin detection was explored.

Main Results:

• The portable system successfully measured and wirelessly communicated fluorescent tracer levels.
• The system demonstrated the capability to generate alarms upon probe performance decline.
• Real-time monitoring of microdialysis membrane integrity was achieved.
• The feasibility of integrating turbidimetric immunoassays with microdialysis was shown.

Conclusions:

• The developed portable microdialysis system enhances accuracy and robustness for clinical use.
• Real-time monitoring of microdialysis performance is crucial for reliable patient management.
• This technology holds promise for continuous monitoring of diagnostic and therapeutic substances.
• Integration with lab-on-a-chip platforms enables advanced point-of-care diagnostics.