Influence of mental stress on the pulse wave features of photoplethysmograms

Healthcare Technology Letters

article

Patrick Celka¹  Peter H. Charlton²  Bushra Farukh³  Philip Chowienczyk³  Jordi Alastruey² 

[1] Polar Electro Oy;Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners;King's College London British Heart Foundation Centre, Department of Clinical Pharmacology, King's College London, King's Health Partners, St. Thomas’ Hospital;Institute of Personalized Medicine, Sechenov University

关键词: photoplethysmography;    cardiology;    medical signal processing;    medical disorders;    pulse wave features;    arm photoplethysmogram;    wave shape parameters;    stress assessment;    mental stress;    pulse transit time;    PPG;    dicrotic notch;    end diastole;    heart rate variability;   

DOI  :  10.1049/htl.2019.0001

学科分类：肠胃与肝脏病学

来源: Wiley

【 摘 要 】

Mental stress is a major burden for our society. Invasive and non-invasive methods have been proposed to monitor and quantify it using various sensors on and off body. In this Letter, the authors investigated the use of the arm photoplethysmogram (PPG) to assess mental stress in laboratory conditions. Results were in correspondence with their previous in-silico study which guided the present study. Three wave shape parameters were identified for stress assessment from the PPG signal: (i) the time from dicrotic notch to end diastole; (ii) the time from pulse onset to systolic peak; and (iii) the ratio of diastolic to systolic area. The proposed in-vivo results showed that the two first parameters responded significantly to increased mental stress and to a breathing relaxation procedure, complementing heart rate, heart rate variability, and pulse transit time as indices of stress.

【 授权许可】

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