title: Photoplethysmography variability as an alternative approach to obtain heart rate variability information in chronic pain patient.
abstract: Heart rate variability (HRV) is a well-known method for the assessment of autonomic nervous function of the heart. Previous study suggested that pulse rate variability (PRV) determined by photoplethysmography could be used instead of HRV to more simply assess autonomic nervous function. However, most research studies included healthy subjects. Thus, the aim of this study was to investigate the feasibility for PRV as a surrogate index for patients with chronic pain. This study investigated the correlation coefficient (by Pearson correlation) and agreement (by Bland-Altman analysis) between PRV and HRV in chronic pain patients in the clinical setting. The results showed high significant correlations (p < 0.001, r > 0.86) between all the HRV and PRV parameters and good agreements (ratio < 0.1) between the parameters in terms of HR, mean RR, VLF, LF, nLF, nHF, and SD1/SD2. Our study suggests that HRV can also be reliably estimated using the photoplethysmography-based PP interval in elderly patients with chronic pain.
authors.affiliation: Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, 320, Taiwan. cheng10965@gmail.com.
authors.forename: Chiung-Cheng
authors.initials: CC
authors.lastname: Chuang
authors.affiliation: Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, 320, Taiwan.
authors.forename: Jing-Jhao
authors.initials: JJ
authors.lastname: Ye
authors.affiliation: Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, 320, Taiwan.
authors.forename: Wan-Chun
authors.initials: WC
authors.lastname: Lin
authors.affiliation: Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, 320, Taiwan.
authors.forename: Kuan-Ting
authors.initials: KT
authors.lastname: Lee
authors.affiliation: Department of Anaesthesiology, Wan-Fang Hospital, Taipei, Taiwan. cheng965@cycu.edu.tw.
authors.forename: Yu-Ting
authors.initials: YT
authors.lastname: Tai
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D059350:Chronic Pain / Q000503:physiopathology*; D004562:Electrocardiography / Q000706:statistics & numerical data; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017156:Photoplethysmography / Q000379:methods* / Q000706:statistics & numerical data
keywords: Autonomic nervous system; Chronic pain; Heart rate variability; Photoplethysmography