Imperial College London
Alternate

Dr Syed Anas Imtiaz

Faculty of Engineering, Department of Electrical and Electronic Engineering

Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 6297anas.imtiaz Website

 
 
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Location

 

907Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sharma:2019:10.1038/s41598-019-55599-5,
author = {Sharma, P and Anas, Imtiaz S and Rodriguez-Villegas, E},
doi = {10.1038/s41598-019-55599-5},
journal = {Scientific Reports - Nature},
title = {Acoustic sensing as a novel wearable approach for cardiac monitoring at the wrist},
url = {http://dx.doi.org/10.1038/s41598-019-55599-5},
volume = {9},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper introduces the concept of using acoustic sensing over the radial artery to extract cardiac parameters for continuous vital sign monitoring. It proposes a novel measurement principle that allows detection of the heart sounds together with the pulse wave, an attribute not possible with existing photoplethysmography (PPG)-based methods for monitoring at wrist. The validity of the proposed principle is demonstrated using a new miniature, battery-operated wearable device to sense the acoustic signals and a novel algorithm to extract the heart rate from these signals. The algorithm utilizes the power spectral analysis of the acoustic pulse signal to detect the S1 sounds and additionally, the K-means method to remove motion artifacts for an accurate heartbeat detection. It has been validated on a dataset consisting of 12 subjects with a data length of 6 hours. The results demonstrate an accuracy of 98.78\%, mean absolute error of 0.28 bpm, limits of agreement between -1.68 and 1.69 bpm, and a correlation coefficient of 0.998 with reference to a state-of-the-art PPG-based commercial device. The results in this proof of concept study demonstrate the potential of this new sensing modality to be used as an alternative, or to complement existing methods, for continuous monitoring of heart rate at wrist.
AU  - Sharma,P
AU  - Anas,Imtiaz S
AU  - Rodriguez-Villegas,E
DO  - 10.1038/s41598-019-55599-5
PY  - 2019///
SN  - 2045-2322
TI  - Acoustic sensing as a novel wearable approach for cardiac monitoring at the wrist
T2  - Scientific Reports - Nature
UR  - http://dx.doi.org/10.1038/s41598-019-55599-5
UR  - http://hdl.handle.net/10044/1/75427
VL  - 9
ER  -
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