On Time Domain Analysis of Photoplethysmogram Signals for Monitoring Heat Stress

Sensors

Mohamed Elgendi⁶  Rich Fletcher¹  Ian Norton²  Matt Brearley²  Derek Abbott⁵  Nigel H. Lovell³  Dale Schuurmans⁴ 

[1] Media Lab, Massachusetts Institute of Technology, Boston, MA 02139, USA; E-Mail:;National Critical Care and Trauma Response Centre, Darwin, NT 0810, Australia; E-Mails:;Graduate School of Biomedical Engineering, UNSW, Sydney, NSW 2052, Australia; E-Mail:;Department of Computing Science, University of Alberta, Edmonton, AB T6G 2E8, Canada; E-Mail:;School of Electrical and Electronic Engineering, University of Adelaide, Adelaide, SA 5005, Australia; E-Mail:;Electrical and Computer Engineering in Medicine Group, University of British Columbia and BC Children’s Hospital, Vancouver, BC V6H 3N1, Canada

关键词: global warming;    affordable healthcare;    thermal stress;   

DOI  :  10.3390/s151024716

来源: mdpi

【 摘 要 】

There are a limited number of studies on heat stress dynamics during exercise using the photoplethysmogram (PPG) and its second derivative (APG). However, we investigate the most suitable index from short PPG signal recordings for heat stress assessment. The APG waveform consists of a, b, c and d waves in systole and an e wave in diastole. Our preliminary results indicate that the use of the energy ofintervals) improved the heat stress detection to an overall accuracy of 83%.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.