Single-Channel Impedance Plethysmography Neck Patch Device for Unobtrusive Wearable Cardiovascular Monitoring

Ting-Wei Wang; Hsiao-Wei Chu; Wen-Xiang Chen; Yuan-Ta Shih; Po-Chun Hsu; Hao-Min Cheng; Shien-Fong Lin

doi:10.1109/ACCESS.2020.3029604

IEEE Access (Jan 2020)

Single-Channel Impedance Plethysmography Neck Patch Device for Unobtrusive Wearable Cardiovascular Monitoring

Ting-Wei Wang,
Hsiao-Wei Chu,
Wen-Xiang Chen,
Yuan-Ta Shih,
Po-Chun Hsu,
Hao-Min Cheng,
Shien-Fong Lin

Affiliations

Ting-Wei Wang: ORCiD; College of Electrical and Computer Engineering, Institute of Biomedical Engineering, National Chiao Tung University, Hsinchu, Taiwan
Hsiao-Wei Chu: College of Electrical and Computer Engineering, Institute of Biomedical Engineering, National Chiao Tung University, Hsinchu, Taiwan
Wen-Xiang Chen: College of Electrical and Computer Engineering, Institute of Biomedical Engineering, National Chiao Tung University, Hsinchu, Taiwan
Yuan-Ta Shih: Research and Development Department VI, Smart Healthcare BU, Leadtek Research Inc., New Taipei, Taiwan
Po-Chun Hsu: Research and Development Department VI, Smart Healthcare BU, Leadtek Research Inc., New Taipei, Taiwan
Hao-Min Cheng: Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan
Shien-Fong Lin: ORCiD; College of Electrical and Computer Engineering, Institute of Biomedical Engineering, National Chiao Tung University, Hsinchu, Taiwan

DOI: https://doi.org/10.1109/ACCESS.2020.3029604
Journal volume & issue: Vol. 8
pp. 184909 – 184919

Abstract

Read online

Background: Wearable and unobtrusive sensing devices are rapidly evolving for long-term cardiovascular monitoring. However, most of the cardiovascular device requires multi-channel physiological signals acquisition, especially in continuous blood pressure (BP) measurement using pulse transition time (PTT) based methods. The multi-devices implementation could impede wearable applications. Objective: This study developed a wearable neck patch device using single-channel impedance plethysmography (IPG) sensing for cardiovascular monitoring, including continuous BP and heart rate (HR) measurement. Methods: IPG-based BP model was derived based on the Bramwell-Hill equation. A patch IPG device was designed and installed above the carotid artery of the subject neck. To validate the BP and HR functions of our device, the Bland-Altman plots were performed to evaluate the estimation error between the reference and the proposed devices within 20 healthy subjects. Results: The BP performance indicates that systolic BP (SBP) estimation error was -0.16 ± 2.97 mmHg and 2.43 ± 1.71 mmHg in terms of mean error (ME) and mean absolute error (MAE), and 0.09 ± 3.30 mmHg and 2.83 ± 1.68 mmHg for diastolic BP (DBP) estimation. Moreover, the HR accuracy has the ME and MAE of 0.02 ± 0.17 bpm and 0.14 ± 0.08 bpm; mean percentage error (MPE) and mean absolute percentage error (MAPE) obtained 0.04 ± 0.23 % and 0.19 ± 0.12 %. Based on statistical results, the BP and HR function of our device satisfied with AAMI/ANSI criteria below 5 ± 8 mmHg and ± 5 bpm or ± 10%. Conclusion: This study implemented a wearable neck patch device with single-channel IPG acquisition that provided two significant cardiovascular parameters of continuous BP and HR, and its performance agreed with standard criteria based on validation with reference sensors. Significance: The proposed proof-of-concept IPG neck patch device has a high potential for wearable applications and low-cost manufacturing in cardiovascular monitoring.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords