An in-ear pulse wave velocity measurement system using heart sounds as time reference
Open accessAbstract
Pulse wave measurements provide vital information in medical diagnosis. For this reason, a measurement system is developed for determining the transient time of the pulse wave between the heart and the ear. To detect pressure variations in the sealed ear canal, caused by the arriving pulse wave, an in-ear sensor is developed which uses heart sounds as time reference. Furthermore, for extracting the heart sounds from the pressure measurements and calculating the pulse wave transient time, a MATLAB-based algorithm is described. An embedded microcontroller based measurement board is presented, which realizes an interface between the sensor and the computer for signal processing.
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Bone conducted sounds collected via wearables have been analysed for health applications.
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Expert consensus document on arterial stiffness: methodological issues and clinical applications
Laurent, S., Cockcroft, J., Van Bortel, L., Boutouyrie, P., Giannattasio, C., Hayoz, D., Pannier, B., Vlachopoulos, C., Wilkinson, I., Struijker-Boudier, H., et al. (2006) · European Heart Journal · doi:10.1093/eurheartj/ehl254 · Cited by 6,077 · see citing works
Photoplethysmography and its application in clinical physiological measurement
Allen, J. (2007) · Physiological Measurement · doi:10.1088/0967-3334/28/3/r01 · Cited by 3,967 · see citing works
Laurent, S., Boutouyrie, P., Asmar, R., Gautier, I., Laloux, B., Guize, L., Ducimetiere, P., & Benetos, A. (2001) · Hypertension · doi:10.1161/01.hyp.37.5.1236 · Cited by 3,856 · see citing works
Medical Instrumentation-Application and Design
Webster, J. G. (1978) · Journal of Clinical Engineering · doi:10.1097/00004669-197807000-00017 · Cited by 1,849 · see citing works
Impact of Aortic Stiffness Attenuation on Survival of Patients in End-Stage Renal Failure
Guérin, A. P., Blacher, J., Pannier, B., Marchais, S. J., Safar, M. E., & London, G. M. (2001) · Circulation · doi:10.1161/01.cir.103.7.987 · Cited by 1,035 · see citing works
Cattivelli, F. S., & Garudadri, H. (2009) · Wearable and Implantable Body Sensor Networks · doi:10.1109/bsn.2009.35 · Cited by 172 · see citing works
Biomedical Engineering / Biomedizinische Technik
Technik, D. G. F. B., Technik, Ö. G. F. B., & Technik, S. G. F. B. (2006) · Biomedizinische Technik/Biomedical Engineering · doi:10.1515/bmte · Cited by 72 · see citing works
Arterielle Gefäßsteifigkeit und Pulswellenanalyse
Baulmann, J., Nürnberger, J., Slany, J., Schmieder, R., Schmidt‐Trucksäss, A., Baumgart, D., Cremerius, P., Hess, O. M., Mortensen, K., & Weber, T. (2010) · DMW - Deutsche Medizinische Wochenschrift · doi:10.1055/s-0030-1249183 · Cited by 48 · see citing works
Mohammadiha, N., Doclo, S., Vos, M. D., Bleichner, M., & Debener, S. (2014) · Biomedizinische Technik/Biomedical Engineering · doi:10.1515/bmt-2014-5011 · Cited by 23 · see citing works
Comparison of bilateral pulse arrival time before and after induced vasodilation by axillary block
Kortekaas, M. C., Niehof, S. P., van Velzen, M. H. N., Galvin, E. M., Stolker, R. J., & Huygen, F. J. P. M. (2012) · Physiological Measurement · doi:10.1088/0967-3334/33/12/1993 · Cited by 21 · see citing works
In-Ear Pulse Wave Measurements: A Pilot Study
Kaufmann, S., Ardelt, G., Malhotra, A., & Ryschka, M. (2013) · Biomedizinische Technik/Biomedical Engineering · doi:10.1515/bmt-2013-4128 · Cited by 5 · see citing works
Self-citationMiddeke, M. (2010) · DMW - Deutsche Medizinische Wochenschrift · doi:10.1055/s-0030-1249182 · Cited by 3 · see citing works
Zweitmeinungsverfahren: Die Meinungen gehen auseinander
Weiß, J. (2010) · DMW - Deutsche Medizinische Wochenschrift · doi:10.1055/s-0030-1247668 · Cited by 2 · see citing works
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1 of the 14 references couldn’t be matched to a known paper.
Research works printed but not linked: 1
- Baulmann J et al. Arterielle Gefäßsteifigkeit und Pulswellen- analyse -Positionspapier zu Grundlagen, Methodik, Beein- flussbarkeit und Ergebnisinterpretation. Deutsche Medizinis- che Wochenschrift 2010; 135: 4-14.
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Self-citation
- Authors
- Kusche, R., Klimach, P., Malhotra, A., Kaufmann, S., & Ryschka, M.
- Affiliations
- University of Lübeck (DE)
- Technical University of Applied Sciences Lübeck (DE)
- Corresponding author
- Kusche, R.
- ORCID
- Kusche, R.
- Venue
- Current Directions in Biomedical Engineering
- Publisher
- Walter de Gruyter GmbH
- Published
- 2015-09-01
- Volume
- 1
- Issue
- 1
- Pages
- 366-370
- ISSN
- 2364-5504 (ISSN-L)
- OpenAlex
- W2346152958
- Cited by
- 15
- References
- 14
- Citations by year
- 2025: 1 · 2024: 4 · 2023: 2 · 2022: 1 · 2021: 1 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 1
- FWCI
- 0.83
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- Current Directions in Biomedical Engineering (publishedVersion, cc-by-nc-nd)
- arXiv (Cornell University) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- arXiv (Cornell University)
- Funders
- Bundesministerium für Bildung und Forschung (FKZ 13EZ1140A/B, 13EZ1140A/B)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Phonocardiography and Auscultation Techniques
- Keywords
- pulse wave velocity, heart sounds, temporal reference, ear canal pressure, embedded microcontroller, MATLAB algorithm, pulse wave measurement
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