Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic Subjects

The present study aimed at testing the hypothesis that application of multiscale cross-approximate entropy (MCAE) analysis in the study of nonlinear coupling behavior of two synchronized time series of different natures [i.e., R-R interval (RRI) and crest time (CT, the time interval from foot to pea...

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Main Authors: Ming-Xia Xiao, Hai-Cheng Wei, Ya-Jie Xu, Hsien-Tsai Wu, Cheuk-Kwan Sun
Format: Article
Language:English
Published: MDPI AG 2018-06-01
Series:Entropy
Subjects:
Online Access:http://www.mdpi.com/1099-4300/20/7/497
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author Ming-Xia Xiao
Hai-Cheng Wei
Ya-Jie Xu
Hsien-Tsai Wu
Cheuk-Kwan Sun
author_facet Ming-Xia Xiao
Hai-Cheng Wei
Ya-Jie Xu
Hsien-Tsai Wu
Cheuk-Kwan Sun
author_sort Ming-Xia Xiao
collection DOAJ
description The present study aimed at testing the hypothesis that application of multiscale cross-approximate entropy (MCAE) analysis in the study of nonlinear coupling behavior of two synchronized time series of different natures [i.e., R-R interval (RRI) and crest time (CT, the time interval from foot to peakof a pulse wave)] could yield information on complexity related to diabetes-associated vascular changes. Signals of a single waveform parameter (i.e., CT) from photoplethysmography and RRI from electrocardiogram were simultaneously acquired within a period of one thousand cardiac cycles for the computation of different multiscale entropy indices from healthy young adults (n = 22) (Group 1), upper-middle aged non-diabetic subjects (n = 34) (Group 2) and diabetic patients (n = 34) (Group 3). The demographic (i.e., age), anthropometric (i.e., body height, body weight, waist circumference, body-mass index), hemodynamic (i.e., systolic and diastolic blood pressures), and serum biochemical (i.e., high- and low-density lipoprotein cholesterol, total cholesterol, and triglyceride) parameters were compared with different multiscale entropy indices including small- and large-scale multiscale entropy indices for CT and RRI [MEISS(CT), MEILS(CT), MEISS(RRI), MEILS(RRI), respectively] as well as small- and large-scale multiscale cross-approximate entropy indices [MCEISS, MCEILS, respectively]. The results demonstrated that both MEILS(RRI) and MCEILS significantly differentiated between Group 2 and Group 3 (all p < 0.017). Multivariate linear regression analysis showed significant associations of MEILS(RRI) and MCEILS(RRI,CT) with age and glycated hemoglobin level (all p < 0.017). The findings highlight the successful application of a novel multiscale cross-approximate entropy index in non-invasively identifying diabetes-associated subtle changes in vascular functional integrity, which is of clinical importance in preventive medicine.
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spelling doaj.art-32770026b94f48e5b895ce68452b3dd12022-12-22T04:25:15ZengMDPI AGEntropy1099-43002018-06-0120749710.3390/e20070497e20070497Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic SubjectsMing-Xia Xiao0Hai-Cheng Wei1Ya-Jie Xu2Hsien-Tsai Wu3Cheuk-Kwan Sun4School of Electrical and Information Engineering, North Minzu University, No. 204 North—Wenchang St., Xixia District, Yinchuan 750021, ChinaSchool of Electrical and Information Engineering, North Minzu University, No. 204 North—Wenchang St., Xixia District, Yinchuan 750021, ChinaSchool of Electrical and Information Engineering, North Minzu University, No. 204 North—Wenchang St., Xixia District, Yinchuan 750021, ChinaDepartment of Electrical Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, TaiwanDepartment of Emergency Medicine, E-Da Hospital, I-Shou University School of Medicine for International Students, No.1, Yida Road, Jiaosu Village, Yanchao District, Kaohsiung City 82445, TaiwanThe present study aimed at testing the hypothesis that application of multiscale cross-approximate entropy (MCAE) analysis in the study of nonlinear coupling behavior of two synchronized time series of different natures [i.e., R-R interval (RRI) and crest time (CT, the time interval from foot to peakof a pulse wave)] could yield information on complexity related to diabetes-associated vascular changes. Signals of a single waveform parameter (i.e., CT) from photoplethysmography and RRI from electrocardiogram were simultaneously acquired within a period of one thousand cardiac cycles for the computation of different multiscale entropy indices from healthy young adults (n = 22) (Group 1), upper-middle aged non-diabetic subjects (n = 34) (Group 2) and diabetic patients (n = 34) (Group 3). The demographic (i.e., age), anthropometric (i.e., body height, body weight, waist circumference, body-mass index), hemodynamic (i.e., systolic and diastolic blood pressures), and serum biochemical (i.e., high- and low-density lipoprotein cholesterol, total cholesterol, and triglyceride) parameters were compared with different multiscale entropy indices including small- and large-scale multiscale entropy indices for CT and RRI [MEISS(CT), MEILS(CT), MEISS(RRI), MEILS(RRI), respectively] as well as small- and large-scale multiscale cross-approximate entropy indices [MCEISS, MCEILS, respectively]. The results demonstrated that both MEILS(RRI) and MCEILS significantly differentiated between Group 2 and Group 3 (all p < 0.017). Multivariate linear regression analysis showed significant associations of MEILS(RRI) and MCEILS(RRI,CT) with age and glycated hemoglobin level (all p < 0.017). The findings highlight the successful application of a novel multiscale cross-approximate entropy index in non-invasively identifying diabetes-associated subtle changes in vascular functional integrity, which is of clinical importance in preventive medicine.http://www.mdpi.com/1099-4300/20/7/497multiscale entropy (MSE)cross-approximate entropycrest timeR-R intervaldiabetes
spellingShingle Ming-Xia Xiao
Hai-Cheng Wei
Ya-Jie Xu
Hsien-Tsai Wu
Cheuk-Kwan Sun
Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic Subjects
Entropy
multiscale entropy (MSE)
cross-approximate entropy
crest time
R-R interval
diabetes
title Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic Subjects
title_full Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic Subjects
title_fullStr Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic Subjects
title_full_unstemmed Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic Subjects
title_short Combination of R-R Interval and Crest Time in Assessing Complexity Using Multiscale Cross-Approximate Entropy in Normal and Diabetic Subjects
title_sort combination of r r interval and crest time in assessing complexity using multiscale cross approximate entropy in normal and diabetic subjects
topic multiscale entropy (MSE)
cross-approximate entropy
crest time
R-R interval
diabetes
url http://www.mdpi.com/1099-4300/20/7/497
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