Abstract

Heart rate variability (HRV) provides insight into cardiovascular health and autonomic function. Electrocardiography (ECG) provides gold standard HRV measurements but is inconvenient for continuous acquisition when monitored from the extremities. Optical techniques such as photoplethysmography (PPG), often found in health and wellness trackers for heart rate measurements, have been used to estimate HRV peripherally but decline in accuracy during increased physical stress. Speckleplethysmography (SPG) is a recently introduced optical technique that provides benefits over PPG, such as increased signal amplitude and reduced susceptibility to temperature-induced vasoconstriction. In this research, we compare SPG and PPG to ECG for estimation of HRV during an orthostatic challenge performed by 17 subjects. We find that SPG estimations of HRV are highly correlated to ECG HRV for both time and frequency domain parameters and provide increased accuracy over PPG estimations of HRV. The results suggest SPG measurements are a viable alternative for HRV estimation when ECG measurements are impractical.

Details

Title
Speckleplethysmographic (SPG) Estimation of Heart Rate Variability During an Orthostatic Challenge
Author
Dunn, Cody E 1 ; Monroe, Derek C 2 ; Crouzet, Christian 3 ; Hicks, James W 4 ; Choi, Bernard 5   VIAFID ORCID Logo 

1  Beckman Laser Institute and Medical Clinic, University of California, Irvine, California, USA; Department of Biomedical Engineering, University of California, Irvine, California, USA; Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California, Irvine, California, USA 
2  Department of Neurology, University of California, Irvine, California, USA 
3  Beckman Laser Institute and Medical Clinic, University of California, Irvine, California, USA; Department of Biomedical Engineering, University of California, Irvine, California, USA 
4  Department of Ecology and Evolutionary Biology, University of California, Irvine, California, USA 
5  Beckman Laser Institute and Medical Clinic, University of California, Irvine, California, USA; Department of Biomedical Engineering, University of California, Irvine, California, USA; Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California, Irvine, California, USA; Department of Surgery, University of California, Irvine, California, USA 
Pages
1-9
Publication year
2019
Publication date
Oct 2019
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-019-50526-0
ProQuest document ID
2299749919
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.