A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation

Abstract Beat-to-beat R-R intervals (RRI) and pulse arrival time (PAT) provide pivotal information to evaluate cardiac autonomic functions for predicting arrhythmias and cardiovascular morbidity. However, their relationship has not been clearly understood. In this study, we simultaneously recorded e...

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Autores principales:	Rong-Chao Peng, Yi Li, Wen-Rong Yan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0049a4db5f674b9d8d10c68cf0f60e4e
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spelling	oai:doaj.org-article:0049a4db5f674b9d8d10c68cf0f60e4e2021-12-02T16:53:11ZA correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation10.1038/s41598-021-90056-22045-2322https://doaj.org/article/0049a4db5f674b9d8d10c68cf0f60e4e2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90056-2https://doaj.org/toc/2045-2322Abstract Beat-to-beat R-R intervals (RRI) and pulse arrival time (PAT) provide pivotal information to evaluate cardiac autonomic functions for predicting arrhythmias and cardiovascular morbidity. However, their relationship has not been clearly understood. In this study, we simultaneously recorded electrocardiograms and photoplethysmograms on 34 subjects in the natural state, and on 55 subjects under the cold stimulation. The RRI and the PAT were calculated and then analyzed using Pearson correlation coefficient. The results showed that the RRI and the PAT were strongly correlated (r = 0.562) and the RRI series were 2.18 ± 0.40 beats advanced to the PAT series. After smoothing, the RRI and the PAT were more correlated in the low frequency than in the high frequency. Furthermore, when involving RRI with the phase effect, the proposed PAT based model showed better performance for blood pressure estimation. We think these results are helpful to understand the underlying regulatory mechanisms of the two cardiovascular factors, and would provide useful suggestions for non-invasive cuffless blood pressure estimation.Rong-Chao PengYi LiWen-Rong YanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rong-Chao Peng Yi Li Wen-Rong Yan A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation
description	Abstract Beat-to-beat R-R intervals (RRI) and pulse arrival time (PAT) provide pivotal information to evaluate cardiac autonomic functions for predicting arrhythmias and cardiovascular morbidity. However, their relationship has not been clearly understood. In this study, we simultaneously recorded electrocardiograms and photoplethysmograms on 34 subjects in the natural state, and on 55 subjects under the cold stimulation. The RRI and the PAT were calculated and then analyzed using Pearson correlation coefficient. The results showed that the RRI and the PAT were strongly correlated (r = 0.562) and the RRI series were 2.18 ± 0.40 beats advanced to the PAT series. After smoothing, the RRI and the PAT were more correlated in the low frequency than in the high frequency. Furthermore, when involving RRI with the phase effect, the proposed PAT based model showed better performance for blood pressure estimation. We think these results are helpful to understand the underlying regulatory mechanisms of the two cardiovascular factors, and would provide useful suggestions for non-invasive cuffless blood pressure estimation.
format	article
author	Rong-Chao Peng Yi Li Wen-Rong Yan
author_facet	Rong-Chao Peng Yi Li Wen-Rong Yan
author_sort	Rong-Chao Peng
title	A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation
title_short	A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation
title_full	A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation
title_fullStr	A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation
title_full_unstemmed	A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation
title_sort	correlation study of beat-to-beat r-r intervals and pulse arrival time under natural state and cold stimulation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0049a4db5f674b9d8d10c68cf0f60e4e
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A correlation study of beat-to-beat R-R intervals and pulse arrival time under natural state and cold stimulation

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