Validierung der Multiparametersonde Neuro Trend TM für den Einsatz unter hyperbaren Bedingungen
The aim of this study was to investigate the reliability and the measuring properties of the multi-parameter sensor NeuroTrend™ in a hyperbaric environment for up to 3 bar absolute pressure. This multi-parameter sensor system has the ability to measuring the oxygen (ptiO2) and carbon dioxid (ptiO2) partial pressure, the hydrogen ion concentration (pH) as well as the temperature (Tti) in the brain tissue. 10 NeuroTrend sensors, filled with equilibrated plasma samples, were inspected in a
... pected in a decompression chamber. The plasma samples were equilibrated with three different gas mixtures. After determination of the initial values for all parameters in the plasma, the ambient pressure was stepwise increased from 0.1 to 3 bar. The same procedere was performed without increasing the ambient pressure. No significant difference in the mean values for all 23 measurement points and for all parameters (pO2, pCO2, pH) of all 10 NeuroTrend sensors was found, under both normobaric and hyperbaric conditions. The study demonstrated that an absolute ambient pressure up to 3 bar did not influence the measuring properties and the reliability of the NeuroTrend sensor.