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Figure 1 | Critical Care

Figure 1

From: Introducing intravascular microdialysis for continuous lactate monitoring in patients undergoing cardiac surgery: a prospective observational study

Figure 1

Schematic illustration of the intravascular microdialysis system. The microdialysis membrane is placed in the bloodstream and is continuously perfused with a perfusion fluid, creating a dialysate. Due to the diffusion of small molecules (for example, lactate) over the microdialysis membrane, the concentration of these molecules in the dialysate will be the same as that in the bloodstream. The dialysate is then analyzed by a sensor that converts this information to digital signals, resulting in a numerical value and a trend graph of the lactate values on a monitor.

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