Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing
Continuous hemodynamic monitoring is important for long-term cardiovascular healthcare, especially in hypertension. The impedance plethysmography (IPG) based carotid pulse sensing is a non-invasive diagnosis technique for measuring pulse signals and further evaluating the arterial conditions of the...
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| Format: | Article |
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MDPI AG
2021-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/5/1600 |
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| author | Ting-Wei Wang Hsiao-Wei Chu Lin Chou Yen-Ling Sung Yuan-Ta Shih Po-Chun Hsu Hao-Min Cheng Shien-Fong Lin |
| author_facet | Ting-Wei Wang Hsiao-Wei Chu Lin Chou Yen-Ling Sung Yuan-Ta Shih Po-Chun Hsu Hao-Min Cheng Shien-Fong Lin |
| author_sort | Ting-Wei Wang |
| collection | DOAJ |
| description | Continuous hemodynamic monitoring is important for long-term cardiovascular healthcare, especially in hypertension. The impedance plethysmography (IPG) based carotid pulse sensing is a non-invasive diagnosis technique for measuring pulse signals and further evaluating the arterial conditions of the patient such as continuous blood pressure (BP) monitoring. To reach the high-resolution IPG-based carotid pulse detection for cardiovascular applications, this study provides an optimized measurement parameter in response to obvious pulsation from the carotid artery. The influence of the frequency of excitation current, electrode cross-sectional area, electrode arrangements, and physiological site of carotid arteries on IPG measurement resolution was thoroughly investigated for optimized parameters. In this study, the IPG system was implemented and installed on the subject’s neck above the carotid artery to evaluate the measurement parameters. The measurement results within 6 subjects obtained the arterial impedance variation of 2137 mΩ using the optimized measurement conditions, including excitation frequency of 50 kHz, a smaller area of 2 cm<sup>2</sup>, electrode spacing of 4 cm and 1.7 cm for excitation and sensing functions, and location on the left side of the neck. The significance of this study demonstrates an optimized measurement methodology of IPG-based carotid pulse sensing that greatly improves the measurement quality in cardiovascular monitoring. |
| first_indexed | 2024-03-09T00:32:40Z |
| format | Article |
| id | doaj.art-98f84308a82b420e936d5e21f7cc016f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T00:32:40Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-98f84308a82b420e936d5e21f7cc016f2023-12-11T18:22:41ZengMDPI AGSensors1424-82202021-02-01215160010.3390/s21051600Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse SensingTing-Wei Wang0Hsiao-Wei Chu1Lin Chou2Yen-Ling Sung3Yuan-Ta Shih4Po-Chun Hsu5Hao-Min Cheng6Shien-Fong Lin7Institute of Biomedical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, TaiwanInstitute of Biomedical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, TaiwanInstitute of Biomedical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, TaiwanInstitute of Biomedical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, TaiwanResearch and Development Department VI, Smart Healthcare BU, Leadtek Research Inc., New Taipei 23511, TaiwanResearch and Development Department VI, Smart Healthcare BU, Leadtek Research Inc., New Taipei 23511, TaiwanCenter for Evidence-Based Medicine, Department of Medical Education, Taipei Veterans General Hospital, Taipei 11217, TaiwanInstitute of Biomedical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, TaiwanContinuous hemodynamic monitoring is important for long-term cardiovascular healthcare, especially in hypertension. The impedance plethysmography (IPG) based carotid pulse sensing is a non-invasive diagnosis technique for measuring pulse signals and further evaluating the arterial conditions of the patient such as continuous blood pressure (BP) monitoring. To reach the high-resolution IPG-based carotid pulse detection for cardiovascular applications, this study provides an optimized measurement parameter in response to obvious pulsation from the carotid artery. The influence of the frequency of excitation current, electrode cross-sectional area, electrode arrangements, and physiological site of carotid arteries on IPG measurement resolution was thoroughly investigated for optimized parameters. In this study, the IPG system was implemented and installed on the subject’s neck above the carotid artery to evaluate the measurement parameters. The measurement results within 6 subjects obtained the arterial impedance variation of 2137 mΩ using the optimized measurement conditions, including excitation frequency of 50 kHz, a smaller area of 2 cm<sup>2</sup>, electrode spacing of 4 cm and 1.7 cm for excitation and sensing functions, and location on the left side of the neck. The significance of this study demonstrates an optimized measurement methodology of IPG-based carotid pulse sensing that greatly improves the measurement quality in cardiovascular monitoring.https://www.mdpi.com/1424-8220/21/5/1600bio-impedance measurementcarotid pulse sensingcardiovascular monitoringcontinuous blood pressurehemodynamicsimpedance plethysmography (IPG) |
| spellingShingle | Ting-Wei Wang Hsiao-Wei Chu Lin Chou Yen-Ling Sung Yuan-Ta Shih Po-Chun Hsu Hao-Min Cheng Shien-Fong Lin Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing Sensors bio-impedance measurement carotid pulse sensing cardiovascular monitoring continuous blood pressure hemodynamics impedance plethysmography (IPG) |
| title | Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing |
| title_full | Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing |
| title_fullStr | Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing |
| title_full_unstemmed | Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing |
| title_short | Bio-Impedance Measurement Optimization for High-Resolution Carotid Pulse Sensing |
| title_sort | bio impedance measurement optimization for high resolution carotid pulse sensing |
| topic | bio-impedance measurement carotid pulse sensing cardiovascular monitoring continuous blood pressure hemodynamics impedance plethysmography (IPG) |
| url | https://www.mdpi.com/1424-8220/21/5/1600 |
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