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Current Directions in Biomedical Engineering

Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering

Editor-in-Chief: Dössel, Olaf

Editorial Board: Augat, Peter / Buzug, Thorsten M. / Haueisen, Jens / Jockenhoevel, Stefan / Knaup-Gregori, Petra / Kraft, Marc / Lenarz, Thomas / Leonhardt, Steffen / Malberg, Hagen / Penzel, Thomas / Plank, Gernot / Radermacher, Klaus M. / Schkommodau, Erik / Stieglitz, Thomas / Urban, Gerald A.


CiteScore 2018: 0.47

Source Normalized Impact per Paper (SNIP) 2018: 0.377

Open Access
Online
ISSN
2364-5504
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Development of a compact stand-alone esophageal pressure measurement device

Andre J. Richter
  • Technische Universität Dresden, Faculty of Medicine Carl Gustav Carus, Department of Anaesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, Fetscherstraße 74, 01307 Dresden, Germany
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/ Christian Schnabel
  • Technische Universität Dresden, Faculty of Medicine Carl Gustav Carus, Department of Anaesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, Dresden, Germany
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/ Peter Spieth
  • Universitätsklinikum Carl Gustav Carus, Department of Anesthesiology and Intensive Care Medicine, Pulmonary Engineering Group, Dresden, Germany
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/ Emdund Koch
  • Technische Universität Dresden, Faculty of Medicine Carl Gustav Carus, Department of Anaesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, Dresden, Germany
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Published Online: 2018-09-22 | DOI: https://doi.org/10.1515/cdbme-2018-0085

Abstract

Mechanical ventilation requires optimal parameter setting for every single patient. For instance sufficient positive end-expiratory pressure (PEEP) may ensure oxygenation and prevent overdistension of lungs or alveolar collapse. To find optimal PEEP, transpulmonary pressure (airway pressure minus pleural pressure) guides as an indicator for both, chest wall mechanics and lung characteristic. Since measurement of pleural pressure is impractical in clinical routine, esophageal pressure can be used to estimate pleural pressure and may help to assure protective mechanical ventilation. We developed a PESO (derived from PESO = esophageal pressure) measurement system, which provides a compact stand-alone device to measure the esophageal pressure during mechanical ventilation of patients. In addition to the esophageal pressure, air way pressure is also measured to provide the synchronized data independent of the ventilator manufacturer. The device works with two commercial pressure transducers, whose signals are conditioned and digitized with an Arduino Nano microcontroller, which samples data with 62 kHz and transmits averaged data with 100 Hz to a mobile tablet PC, which acts as process, display and record unit. The compact system provides a working time of 5 hours. Therefore, the system supports the progress for mechanical ventilation research. This paper describes technical details as well as functionality.

Keywords: esophageal pressure; transpulmonary pressure; mechanical ventilation.

About the article

Published Online: 2018-09-22

Published in Print: 2018-09-01


Citation Information: Current Directions in Biomedical Engineering, Volume 4, Issue 1, Pages 355–358, ISSN (Online) 2364-5504, DOI: https://doi.org/10.1515/cdbme-2018-0085.

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