Noninvasive Carotid Artery Pulse Monitoring System

Pistolwala, Shruti T.; Thakar, Parth; Karamchandani, Sunil

doi:10.1007/978-981-15-1002-1_42

Cited by 1 publication

(1 citation statement)

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“…The physiological measurement location of the carotid artery was selected due to strong arterial pulsation and site near the heart. The carotid artery with palpable arterial pulsation is the most adjacent to the arch of the aorta that provides clear pulse waveforms [15]. The strong arterial pulsation induced large changes in arterial blood volume tends to easily extract the obvious impedance characteristics by IPG device during the systolic and diastolic phases.…”

Section: A Innovation For Cardiovascular Neck Patchmentioning

confidence: 99%

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

et al. 2020

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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 singlechannel 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 lowcost manufacturing in cardiovascular monitoring.

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Section: A Innovation For Cardiovascular Neck Patchmentioning

confidence: 99%