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Epidural pressure measurement using a fiber-optic sensor(proof-of-principle in vivo animal trial)

Animal Models and Experimental Medicine 2024年第5期7卷 769-776页

作者： Susanne barz Marvin Friedemann Sebastian Voigt Markus Melloh thomas barz Department of Anaesthesiology Intensive Care Medicine and Pain TherapyRostock University Medical CenterUniversitätsmedizin RostockRostockGermany Chemnitz University of Technology ChemnitzGermany School of Public Health and Social Work Queensland University of TechnologyBrisbaneQueenslandAustralia Orthopedic Department University of GreifswaldGreifswaldGermany

Background:An increase in epidural pressure around the stenosis has been observed in patients with lumbar spinal stenosis(LSS)with positive signs of sedimentation or redundant nerve *** analysis of the pressure conditions in the stenotic area would be of great *** hypothesized that it would be possible to determine the physiological parameters of the epidural pulse wave and its course in pathological stenosis as a basis for objective identification of LSS based on pressure using a new measuring method with continuous spatial and temporal ***:We performed a single-case proof-of-principle in vivo animal trial and used a newly developed hybrid pressure-measurement probe with a fiber-tip Fabry-Pérot interferometer and several fiber Bragg gratings(FBG).Results:With reproducible precision,we determined the mean epidural pressure to be 7.5 mmHg and the peak-to-peak value to be 4-5 *** analyzing the pres-sure measured by an FBG array,both the heart and respiratory rates can be precisely *** study was the first to measure the pulse wave velocity of the cer-ebrospinal fluid pressure wave as 0.97 m/s using the newly developed pressure probe.A simulated LSS was detected in real time and located ***:The developed fiber-optic pressure sensor probe enables a new objec-tive measurement of epidural *** confirmed our hypothesis that physiologi-cal parameters of the epidural pulse wave can be determined and that it is possible to identify an LSS.

关键词： animal cerebrospinal fluid pressure pulse wave velocity spinal stenosis

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