Sarah Dietz-Terjung1,2,3, Jan Geldmacher4, Sebastian Brato4, Carolin-Maria Linker5,6, Matthias Welsner5, Christoph Schöbel5,7, Christian Taube5, Jürgen Götze6, Gerhard Weinreich5. 1. Department of Pneumology, University Medicine Essen - Ruhrlandklinik, West German Lung Center, University Duisburg-Essen, Duisburg, Germany. sarah.terjung@rlk.uk-essen.de. 2. Faculty of Sleep and Telemedicine, University Medicine Essen - Ruhrlandklinik, West German Lung Center, University Duisburg-Essen, Duisburg, Germany. sarah.terjung@rlk.uk-essen.de. 3. Information Processing Lab, Faculty of Electrical Engineering and Information Engineering, Technical University Dortmund, Dortmund, Germany. sarah.terjung@rlk.uk-essen.de. 4. SWG Sportwerk GmbH & Co. KG, Dortmund, Germany. 5. Department of Pneumology, University Medicine Essen - Ruhrlandklinik, West German Lung Center, University Duisburg-Essen, Duisburg, Germany. 6. Information Processing Lab, Faculty of Electrical Engineering and Information Engineering, Technical University Dortmund, Dortmund, Germany. 7. Faculty of Sleep and Telemedicine, University Medicine Essen - Ruhrlandklinik, West German Lung Center, University Duisburg-Essen, Duisburg, Germany.
Abstract
PURPOSE: In this study, we assessed the diagnostic accuracy of the device VitaLog (SWG Sportwerk GmbH & Co. KG, Dortmund, Germany) for estimation of respiratory rate (RR) variability. METHODS: VitaLog is a minimal-contact biomotion device that is placed under the mattress topper. It senses respiratory effort and body movement using a piezoelectric sensor. Diagnostic accuracy was determined in 103 patients referred to our sleep laboratory for suspected sleep-disordered breathing (SDB). SDB was defined by AHI ≥ 15/h. Results provided by VitaLog were compared with nasal flow measurement obtained by polysomnography (PSG). RESULTS: Diagnostic accuracy of VitaLog was excellent. We obtained a correlation of r = 0.99 and a bias of 0.2 cycles per minute (cpm) between VitaLog and PSG-provided nasal flow. Detection RR variability worked nearly identically in patients with and without SDB. CONCLUSION: VitaLog is an appropriate method for determination of RR variability based on a minimal-contact biomotion sensor. This device is easy to handle, available at low cost, and suitable for long-term monitoring in the hospital or at home.
PURPOSE: In this study, we assessed the diagnostic accuracy of the device VitaLog (SWG Sportwerk GmbH & Co. KG, Dortmund, Germany) for estimation of respiratory rate (RR) variability. METHODS: VitaLog is a minimal-contact biomotion device that is placed under the mattress topper. It senses respiratory effort and body movement using a piezoelectric sensor. Diagnostic accuracy was determined in 103 patients referred to our sleep laboratory for suspected sleep-disordered breathing (SDB). SDB was defined by AHI ≥ 15/h. Results provided by VitaLog were compared with nasal flow measurement obtained by polysomnography (PSG). RESULTS: Diagnostic accuracy of VitaLog was excellent. We obtained a correlation of r = 0.99 and a bias of 0.2 cycles per minute (cpm) between VitaLog and PSG-provided nasal flow. Detection RR variability worked nearly identically in patients with and without SDB. CONCLUSION: VitaLog is an appropriate method for determination of RR variability based on a minimal-contact biomotion sensor. This device is easy to handle, available at low cost, and suitable for long-term monitoring in the hospital or at home.
Authors: Svenja Straßburg; Carolin-Maria Linker; Sebastian Brato; Christoph Schöbel; Christian Taube; Jürgen Götze; Florian Stehling; Sivagurunathan Sutharsan; Matthias Welsner; Gerhard Weinreich Journal: BMC Pulm Med Date: 2022-02-11 Impact factor: 3.317