1
|
Wang Y, Li S, Lu J, Feng K, Huang X, Hu F, Sun M, Zou Y, Li Y, Huang W, Zhou J. The complexity of glucose time series is associated with short- and long-term mortality in critically ill adults: a multi-center, prospective, observational study. J Endocrinol Invest 2024:10.1007/s40618-024-02393-4. [PMID: 38762634 DOI: 10.1007/s40618-024-02393-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/11/2024] [Indexed: 05/20/2024]
Abstract
BACKGROUND The wealth of data taken from continuous glucose monitoring (CGM) remains to be fully used. We aimed to evaluate the relationship between a promising new CGM metric, complexity of glucose time series index (CGI), and mortality in critically ill patients. METHODS A total of 293 patients admitted to mixed medical/surgical intensive care units from 5 medical centers in Shanghai were prospectively included between May 2020 and November 2021. CGI was assessed using intermittently scanned CGM, with a median monitoring period of 12.0 days. Outcome measures included short- and long-term mortality. RESULTS During a median follow-up period of 1.7 years, a total of 139 (47.4%) deaths were identified, of which 73 (24.9%) occurred within the first 30 days after ICU admission, and 103 (35.2%) within 90 days. The multivariable-adjusted HRs for 30-day mortality across ascending tertiles of CGI were 1.00 (reference), 0.68 (95% CI 0.38-1.22) and 0.36 (95% CI 0.19-0.70), respectively. For per 1-SD increase in CGI, the risk of 30-day mortality was decreased by 51% (HR 0.49, 95% CI 0.35-0.69). Further adjustment for HbA1c, mean glucose during hospitalization and glucose variability partially attenuated these associations, although the link between CGI and 30-day mortality remained significant (per 1-SD increase: HR 0.57, 95% CI 0.40-0.83). Similar results were observed when 90-day mortality was considered as the outcome. Furthermore, CGI was also significantly and independently associated with long-term mortality (per 1-SD increase: HR 0.77, 95% CI 0.61-0.97). CONCLUSIONS In critically ill patients, CGI is significantly associated with short- and long-term mortality.
Collapse
Affiliation(s)
- Y Wang
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine; Shanghai Clinical Center for Diabetes; Shanghai Diabetes Institute; Shanghai Key Laboratory of Diabetes Mellitus, 600 Yishan Road, Shanghai, 200233, China
| | - S Li
- Department of Anesthesiology, Tongji University Affiliated Shanghai Tenth People's Hospital, Shanghai, China
- Department of Critical Care Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - J Lu
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine; Shanghai Clinical Center for Diabetes; Shanghai Diabetes Institute; Shanghai Key Laboratory of Diabetes Mellitus, 600 Yishan Road, Shanghai, 200233, China
| | - K Feng
- Department of Critical Care Medicine, Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, China
| | - X Huang
- Department of Critical Care Medicine, Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, China
| | - F Hu
- Department of Critical Care Medicine, Shanghai Fengxian District Central Hospital, Shanghai, China
| | - M Sun
- Department of Critical Care Medicine, Shanghai Eighth People's Hospital, Shanghai, China
| | - Y Zou
- Department of Critical Care Medicine, Shanghai Sixth People's Hospital East Campus, Shanghai, China
| | - Y Li
- Department of Critical Care Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
- Department of Critical Care Medicine, Tongji University Affiliated Shanghai Tenth People's Hospital, 301 Yanan Middle Road, Shanghai, 200040, China.
| | - W Huang
- Department of Critical Care Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
- Department of Critical Care Medicine, Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Fudan University, 966 Huaihai Middle Road, Shanghai, 200031, China.
| | - J Zhou
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine; Shanghai Clinical Center for Diabetes; Shanghai Diabetes Institute; Shanghai Key Laboratory of Diabetes Mellitus, 600 Yishan Road, Shanghai, 200233, China.
| |
Collapse
|
2
|
Zhang T, Dong X, Wang D, Huang C, Zhang XD. RespirAnalyzer: an R package for analyzing data from continuous monitoring of respiratory signals. BIOINFORMATICS ADVANCES 2024; 4:vbae003. [PMID: 38269257 PMCID: PMC10807906 DOI: 10.1093/bioadv/vbae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 11/30/2023] [Accepted: 01/11/2024] [Indexed: 01/26/2024]
Abstract
Motivation The analysis of data obtained from continuous monitoring of respiratory signals (CMRS) holds significant importance in improving patient care, optimizing sports performance, and advancing scientific understanding in the field of respiratory health. Results The R package RespirAnalyzer provides an analytic tool specifically for feature extraction, fractal and complexity analysis for CMRS data. The package covers a wide and comprehensive range of data analysis methods including obtaining inter-breath intervals (IBI) series, plotting time series, obtaining summary statistics of IBI series, conducting power spectral density, multifractal detrended fluctuation analysis (MFDFA) and multiscale sample entropy analysis, fitting the MFDFA results with the extended binomial multifractal model, displaying results using various plots, etc. This package has been developed from our work in directly analyzing CMRS data and is anticipated to assist fellow researchers in computing the related features of their CMRS data, enabling them to delve into the clinical significance inherent in these features. Availability and implementation The package for Windows is available from both Comprehensive R Archive Network (CRAN): https://cran.r-project.org/web/packages/RespirAnalyzer/index.html and GitHub: https://github.com/dongxinzheng/RespirAnalyzer.
Collapse
Affiliation(s)
- Teng Zhang
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Taipa, Macau 999078, China
| | - Xinzheng Dong
- Zhuhai Laboratory of Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, Zhuhai College of Science and Technology, Zhuhai 519041, China
| | - Dandan Wang
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Taipa, Macau 999078, China
| | - Chen Huang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, Macau University of Science and Technology, Taipa, Macau 999078, China
| | - Xiaohua Douglas Zhang
- Department of Biostatistics, University of Kentucky, Lexington, KY 40536, United States
| |
Collapse
|
3
|
Teckchandani TA, Neary JP, Andrews KL, Maguire KQ, Jamshidi L, Nisbet J, Shields RE, Afifi TO, Sauer-Zavala S, Lix LM, Krakauer RL, Asmundson GJG, Krätzig GP, Carleton RN. Cardioautonomic lability assessed by heart rate variability changes in Royal Canadian Mounted Police cadets during the cadet training program. Front Psychol 2023; 14:1144783. [PMID: 37829079 PMCID: PMC10565660 DOI: 10.3389/fpsyg.2023.1144783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 09/14/2023] [Indexed: 10/14/2023] Open
Abstract
Objective The current study examined variations in cardioautonomic lability during the Royal Canadian Mounted Police (RCMP) Cadet Training Program (CTP) between cadets starting their training who did or did not screen positive for one or more mental health disorders (i.e., posttraumatic stress disorder [PTSD], major depressive disorder [MDD], social anxiety disorder [SAD], generalized anxiety disorder [GAD], panic disorder [PD], alcohol use disorder [AUD]). Methods Electrocardiogram (ECG) signals integrated into Hexoskin garments were used to record ECG and heart rate Over the 26-week CTP. There were 31 heart rate variability (HRV) parameters calculated using Kubios Premium HRV analysis software. Mann-Whitney U-tests were used to perform groupwise comparisons of participant raw values and HRV during the CTP. Results A total of 157 cadets (79% male) were screened for any mental disorder using self-report surveys and then grouped by positive and negative screening. Analyses indicated a statistically significant (p < 0.05) decrease in low frequency (LF): High Frequency (HF) variability during CTP, but only for cadets who endorsed clinically significant anxiety symptoms on the GAD-7 at the start of their training. There were no other statistically significant groupwise differences. Conclusion The results indicate the participants have excellent cardiac health overall and suggest potentially important differences between groups, such that cadets who endorsed clinically significant anxiety symptoms on the GAD-7 showed less variability in the LF:HF ratio over the course of the CTP. The relatively lower variability suggests decreased parasympathetic tone in those without clinically significant anxiety symptoms. The results also have important implications for future investigations of cardioautonomic dysfunction and chronic hypothalamic pituitary adrenal (HPA) axis deviations in policing populations with anxiety disorders; specifically, cardioautonomic inflexibility related to cardiovascular morbidity and mortality. In any case, the current results provide an important baseline for future cardiac research with cadets and serving officers.
Collapse
Affiliation(s)
- Taylor A. Teckchandani
- Canadian Institute for Public Safety Research and Treatment-Institut Canadien de Recherche et de Traitement en Sécurité Publique (CIPSRT-ICRTSP), University of Regina, Regina, SK, Canada
| | - J. Patrick Neary
- Faculty of Kinesiology & Health Studies, University of Regina, Regina, SK, Canada
| | - Katie L. Andrews
- Canadian Institute for Public Safety Research and Treatment-Institut Canadien de Recherche et de Traitement en Sécurité Publique (CIPSRT-ICRTSP), University of Regina, Regina, SK, Canada
| | - Kirby Q. Maguire
- Canadian Institute for Public Safety Research and Treatment-Institut Canadien de Recherche et de Traitement en Sécurité Publique (CIPSRT-ICRTSP), University of Regina, Regina, SK, Canada
| | - Laleh Jamshidi
- Canadian Institute for Public Safety Research and Treatment-Institut Canadien de Recherche et de Traitement en Sécurité Publique (CIPSRT-ICRTSP), University of Regina, Regina, SK, Canada
| | - Jolan Nisbet
- Canadian Institute for Public Safety Research and Treatment-Institut Canadien de Recherche et de Traitement en Sécurité Publique (CIPSRT-ICRTSP), University of Regina, Regina, SK, Canada
| | - Robyn E. Shields
- Canadian Institute for Public Safety Research and Treatment-Institut Canadien de Recherche et de Traitement en Sécurité Publique (CIPSRT-ICRTSP), University of Regina, Regina, SK, Canada
- Anxiety and Illness Behaviours Lab, Department of Psychology, University of Regina, Regina, SK, Canada
| | - Tracie O. Afifi
- Department of Community Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | | | - Lisa M. Lix
- Department of Community Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Rachel L. Krakauer
- Anxiety and Illness Behaviours Lab, Department of Psychology, University of Regina, Regina, SK, Canada
| | - Gordon J. G. Asmundson
- Anxiety and Illness Behaviours Lab, Department of Psychology, University of Regina, Regina, SK, Canada
| | | | - R. Nicholas Carleton
- Canadian Institute for Public Safety Research and Treatment-Institut Canadien de Recherche et de Traitement en Sécurité Publique (CIPSRT-ICRTSP), University of Regina, Regina, SK, Canada
- Anxiety and Illness Behaviours Lab, Department of Psychology, University of Regina, Regina, SK, Canada
| |
Collapse
|
4
|
Zhao X, Gong Y, Xu L, Xia L, Zhang J, Zheng D, Yao Z, Zhang X, Wei H, Jiang J, Liu H, Mao J. Entropy-based reliable non-invasive detection of coronary microvascular dysfunction using machine learning algorithm. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2023; 20:13061-13085. [PMID: 37501478 DOI: 10.3934/mbe.2023582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
PURPOSE Coronary microvascular dysfunction (CMD) is emerging as an important cause of myocardial ischemia, but there is a lack of a non-invasive method for reliable early detection of CMD. AIM To develop an electrocardiogram (ECG)-based machine learning algorithm for CMD detection that will lay the groundwork for patient-specific non-invasive early detection of CMD. METHODS Vectorcardiography (VCG) was calculated from each 10-second ECG of CMD patients and healthy controls. Sample entropy (SampEn), approximate entropy (ApEn), and complexity index (CI) derived from multiscale entropy were extracted from ST-T segments of each lead in ECGs and VCGs. The most effective entropy subset was determined using the sequential backward selection algorithm under the intra-patient and inter-patient schemes, separately. Then, the corresponding optimal model was selected from eight machine learning models for each entropy feature based on five-fold cross-validations. Finally, the classification performance of SampEn-based, ApEn-based, and CI-based models was comprehensively evaluated and tested on a testing dataset to investigate the best one under each scheme. RESULTS ApEn-based SVM model was validated as the optimal one under the intra-patient scheme, with all testing evaluation metrics over 0.8. Similarly, ApEn-based SVM model was selected as the best one under the intra-patient scheme, with major evaluation metrics over 0.8. CONCLUSIONS Entropies derived from ECGs and VCGs can effectively detect CMD under both intra-patient and inter-patient schemes. Our proposed models may provide the possibility of an ECG-based tool for non-invasive detection of CMD.
Collapse
Affiliation(s)
- Xiaoye Zhao
- School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
- School of Electrical and Information Engineering, North Minzu University, Yinchuan 750001, Ningxia, China
- Key Laboratory of Atmospheric Environment Remote Sensing of Ningxia, Yinchuan 750001, Ningxia, China
| | - Yinlan Gong
- Institute of Wenzhou, Zhejiang University, Wenzhou 325000, Zhejiang, China
| | - Lihua Xu
- Hangzhou Linghua Biotech Ltd, Hangzhou 310009, Zhejiang, China
| | - Ling Xia
- Key Laboratory for Biomedical Engineering of Ministry of Education, Hangzhou 310009, Zhejiang, China
- Institute of Biomedical Engineering, Zhejiang University, Hangzhou 310009, Zhejiang, China
| | - Jucheng Zhang
- Department of Clinical Engineering, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang, China
| | - Dingchang Zheng
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, United Kingdom
| | - Zongbi Yao
- Department of Cardiology, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750021, Ningxia, China
| | - Xinjie Zhang
- Department of Cardiology, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750021, Ningxia, China
| | - Haicheng Wei
- School of Electrical and Information Engineering, North Minzu University, Yinchuan 750001, Ningxia, China
| | - Jun Jiang
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang, China
| | - Haipeng Liu
- Research Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, United Kingdom
| | - Jiandong Mao
- School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
- School of Electrical and Information Engineering, North Minzu University, Yinchuan 750001, Ningxia, China
- Key Laboratory of Atmospheric Environment Remote Sensing of Ningxia, Yinchuan 750001, Ningxia, China
| |
Collapse
|
5
|
Mohamed N, Kim HS, Mohamed M, Kang KM, Kim SH, Kim JG. Tablet-Based Wearable Patch Sensor Design for Continuous Cardiovascular System Monitoring in Postoperative Settings. BIOSENSORS 2023; 13:615. [PMID: 37366980 DOI: 10.3390/bios13060615] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/27/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023]
Abstract
Meticulous monitoring for cardiovascular systems is important for postoperative patients in postanesthesia or the intensive care unit. The continuous auscultation of heart and lung sounds can provide a valuable information for patient safety. Although numerous research projects have proposed the design of continuous cardiopulmonary monitoring devices, they primarily focused on the auscultation of heart and lung sounds and mostly served as screening tools. However, there is a lack of devices that could continuously display and monitor the derived cardiopulmonary parameters. This study presents a novel approach to address this need by proposing a bedside monitoring system that utilizes a lightweight and wearable patch sensor for continuous cardiovascular system monitoring. The heart and lung sounds were collected using a chest stethoscope and microphones, and a developed adaptive noise cancellation algorithm was implemented to remove the background noise corrupted with those sounds. Additionally, a short-distance ECG signal was acquired using electrodes and a high precision analog front end. A high-speed processing microcontroller was used to allow real-time data acquisition, processing, and display. A dedicated tablet-based software was developed to display the acquired signal waveforms and the processed cardiovascular parameters. A significant contribution of this work is the seamless integration of continuous auscultation and ECG signal acquisition, thereby enabling the real-time monitoring of cardiovascular parameters. The wearability and lightweight design of the system were achieved through the use of rigid-flex PCBs, which ensured patient comfort and ease of use. The system provides a high-quality signal acquisition and real-time monitoring of the cardiovascular parameters, thus proving its potential as a health monitoring tool.
Collapse
Affiliation(s)
- Nourelhuda Mohamed
- Biomedical Science and Engineering Department, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Hyun-Seok Kim
- Biomedical Engineering Research Center, Asan Institute for Life Science, Asan Medical Center, Seoul 05505, Republic of Korea
| | - Manal Mohamed
- Biomedical Science and Engineering Department, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Kyu-Min Kang
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, Seoul 05505, Republic of Korea
| | - Sung-Hoon Kim
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, Seoul 05505, Republic of Korea
| | - Jae Gwan Kim
- Biomedical Science and Engineering Department, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| |
Collapse
|
6
|
Castiglioni P, Merati G, Parati G, Faini A. Sample, Fuzzy and Distribution Entropies of Heart Rate Variability: What Do They Tell Us on Cardiovascular Complexity? ENTROPY (BASEL, SWITZERLAND) 2023; 25:281. [PMID: 36832650 PMCID: PMC9954876 DOI: 10.3390/e25020281] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/25/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Distribution Entropy (DistEn) has been introduced as an alternative to Sample Entropy (SampEn) to assess the heart rate variability (HRV) on much shorter series without the arbitrary definition of distance thresholds. However, DistEn, considered a measure of cardiovascular complexity, differs substantially from SampEn or Fuzzy Entropy (FuzzyEn), both measures of HRV randomness. This work aims to compare DistEn, SampEn, and FuzzyEn analyzing postural changes (expected to modify the HRV randomness through a sympatho/vagal shift without affecting the cardiovascular complexity) and low-level spinal cord injuries (SCI, whose impaired integrative regulation may alter the system complexity without affecting the HRV spectrum). We recorded RR intervals in able-bodied (AB) and SCI participants in supine and sitting postures, evaluating DistEn, SampEn, and FuzzyEn over 512 beats. The significance of "case" (AB vs. SCI) and "posture" (supine vs. sitting) was assessed by longitudinal analysis. Multiscale DistEn (mDE), SampEn (mSE), and FuzzyEn (mFE) compared postures and cases at each scale between 2 and 20 beats. Unlike SampEn and FuzzyEn, DistEn is affected by the spinal lesion but not by the postural sympatho/vagal shift. The multiscale approach shows differences between AB and SCI sitting participants at the largest mFE scales and between postures in AB participants at the shortest mSE scales. Thus, our results support the hypothesis that DistEn measures cardiovascular complexity while SampEn/FuzzyEn measure HRV randomness, highlighting that together these methods integrate the information each of them provides.
Collapse
Affiliation(s)
- Paolo Castiglioni
- Department of Biotechnology and Life Sciences (DBSV), University of Insubria, 21100 Varese, Italy
- Laboratory of Movement Analysis and Bioengineering of Rehabilitation (Lamobir), IRCCS Fondazione Don Carlo Gnocchi ONLUS, 20148 Milan, Italy
| | - Giampiero Merati
- Department of Biotechnology and Life Sciences (DBSV), University of Insubria, 21100 Varese, Italy
- Laboratory of Movement Analysis and Bioengineering of Rehabilitation (Lamobir), IRCCS Fondazione Don Carlo Gnocchi ONLUS, 20148 Milan, Italy
| | - Gianfranco Parati
- Department of Medicine and Surgery, University of Milano-Bicocca, 20126 Milan, Italy
- Department of Cardiovascular, Neural and Metabolic Sciences, Istituto Auxologico Italiano, IRCCS, 20145 Milan, Italy
| | - Andrea Faini
- Department of Cardiovascular, Neural and Metabolic Sciences, Istituto Auxologico Italiano, IRCCS, 20145 Milan, Italy
- Department of Electronics, Information and Bioengineering (DEIB), Politecnico di Milano, 20131 Milan, Italy
| |
Collapse
|
7
|
Ma Y, Liu C, Cao S, Chen T, Chen G. Microfluidics for diagnosis and treatment of cardiovascular disease. J Mater Chem B 2023; 11:546-559. [PMID: 36542463 DOI: 10.1039/d2tb02287g] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cardiovascular disease (CVD), a type of circulatory system disease related to the lesions of the cardiovascular system, has become one of the main diseases that endanger human health. Currently, the clinical diagnosis of most CVDs relies on a combination of imaging technology and blood biochemical test. However, the existing technologies for diagnosis of CVDs still have limitations in terms of specificity, detection range, and cost. In order to break through the current bottleneck, microfluidic with the advantages of low cost, simple instruments and easy integration, has been developed to play an important role in the early prevention, diagnosis and treatment of CVDs. Here, we have reviewed the recent various applications of microfluidic in the clinical diagnosis and treatment of CVDs, including microfluidic devices for detecting CVD markers, the cardiovascular models based on microfluidic, and the microfluidic used for CVDs drug screening and delivery. In addition, we have briefly looked forward to the prospects and challenges of microfluidics in diagnosis and treatment of CVDs.
Collapse
Affiliation(s)
- Yonggeng Ma
- School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China.
| | - Chenbin Liu
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai 200072, P. R. China
| | - Siyu Cao
- School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China.
| | - Tianshu Chen
- Department of Clinical Laboratory Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P. R. China.
| | - Guifang Chen
- School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China.
| |
Collapse
|
8
|
Omidvarnia A, Liégeois R, Amico E, Preti MG, Zalesky A, Van De Ville D. On the Spatial Distribution of Temporal Complexity in Resting State and Task Functional MRI. ENTROPY (BASEL, SWITZERLAND) 2022; 24:1148. [PMID: 36010812 PMCID: PMC9407401 DOI: 10.3390/e24081148] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Measuring the temporal complexity of functional MRI (fMRI) time series is one approach to assess how brain activity changes over time. In fact, hemodynamic response of the brain is known to exhibit critical behaviour at the edge between order and disorder. In this study, we aimed to revisit the spatial distribution of temporal complexity in resting state and task fMRI of 100 unrelated subjects from the Human Connectome Project (HCP). First, we compared two common choices of complexity measures, i.e., Hurst exponent and multiscale entropy, and observed a high spatial similarity between them. Second, we considered four tasks in the HCP dataset (Language, Motor, Social, and Working Memory) and found high task-specific complexity, even when the task design was regressed out. For the significance thresholding of brain complexity maps, we used a statistical framework based on graph signal processing that incorporates the structural connectome to develop the null distributions of fMRI complexity. The results suggest that the frontoparietal, dorsal attention, visual, and default mode networks represent stronger complex behaviour than the rest of the brain, irrespective of the task engagement. In sum, the findings support the hypothesis of fMRI temporal complexity as a marker of cognition.
Collapse
Affiliation(s)
- Amir Omidvarnia
- Applied Machine Learning Group, Institute of Neuroscience and Medicine, Forschungszentrum Juelich, 52428 Juelich, Germany
- Institute of Systems Neuroscience, Heinrich Heine University Duesseldorf, 40225 Duesseldorf, Germany
- Neuro-X Institute, École Polytechnique Fédérale de Lausanne, 1202 Geneva, Switzerland
- Department of Radiology and Medical Informatics, University of Geneva, 1211 Geneva, Switzerland
| | - Raphaël Liégeois
- Neuro-X Institute, École Polytechnique Fédérale de Lausanne, 1202 Geneva, Switzerland
- Department of Radiology and Medical Informatics, University of Geneva, 1211 Geneva, Switzerland
| | - Enrico Amico
- Neuro-X Institute, École Polytechnique Fédérale de Lausanne, 1202 Geneva, Switzerland
- Department of Radiology and Medical Informatics, University of Geneva, 1211 Geneva, Switzerland
| | - Maria Giulia Preti
- Neuro-X Institute, École Polytechnique Fédérale de Lausanne, 1202 Geneva, Switzerland
- Department of Radiology and Medical Informatics, University of Geneva, 1211 Geneva, Switzerland
- CIBM Center for Biomedical Imaging, 1015 Lausanne, Switzerland
| | - Andrew Zalesky
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne, Melbourne, VIC 3010, Australia
- Department of Biomedical Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Dimitri Van De Ville
- Neuro-X Institute, École Polytechnique Fédérale de Lausanne, 1202 Geneva, Switzerland
- Department of Radiology and Medical Informatics, University of Geneva, 1211 Geneva, Switzerland
| |
Collapse
|
9
|
Kganakga JT, Bester P, Ricci C, Botha-Le Roux S, Cockeran M, Greeff M, Kruger IM. Prognostic values of modifiable risk factors for cardiovascular events in South African health promotion. PLoS One 2022; 17:e0271169. [PMID: 35947581 PMCID: PMC9365156 DOI: 10.1371/journal.pone.0271169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/24/2022] [Indexed: 11/19/2022] Open
Abstract
Background
Cardiovascular diseases (CVDs) are increasing at an alarming rate among the South African population. This study aimed to determine the prognostic value of modifiable CVD risk factors for fatal and non-fatal events to inform cardiovascular health promotion practices in the South African public health system.
Methods
Data was collected from individuals participating in the South African leg of a multi-national prospective cohort study. Binary logistic regression was applied to estimate odds of total, non-fatal and fatal cardiovascular events.
Results
Binary logistic regression analyses identified age as a predictor of non-fatal and fatal CV events, with ORs of 1.87 to 3.21, respectively. Hypertension increased the odd of suffering a non-fatal CV event by almost two and a half (OR = 2.47; 95% CI = 1.26, 4.85). Moreover, being physically active reduced the odd of non-fatal CVD events by 38% (OR = 0.62; 95% CI = 0.46, 0.83 for 1 Standard deviation increase of the weighted physical activity index score (WPA)). On the one hand, gamma-glutamyltransferase (GGT) was associated with a higher fatal cardiovascular disease risk OR = 2.45 (95% CI = 1.36, 4.42) for a standard deviation increase.
Conclusions
Elevated blood pressure, GGT, and physical activity have significant prognostic values for fatal or non-fatal CV events. These findings emphasise the importance of highlighting hypertension and physical activity when planning cardiovascular health education and intervention programmes for this population, with attention to the monitoring of GGT.
Collapse
Affiliation(s)
- Jacobeth T. Kganakga
- Africa Unit for Transdisciplinary Health Reseach (AUTHeR), North-West University, Potchefstroom, South Africa
| | - Petra Bester
- Africa Unit for Transdisciplinary Health Reseach (AUTHeR), North-West University, Potchefstroom, South Africa
| | - Cristian Ricci
- Africa Unit for Transdisciplinary Health Reseach (AUTHeR), North-West University, Potchefstroom, South Africa
| | - Shani Botha-Le Roux
- MRC Unit on Hypertension and Cardiovascular Disease, Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - Marike Cockeran
- School for Computer, Statistical and Mathematical Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
| | - Minrie Greeff
- Africa Unit for Transdisciplinary Health Reseach (AUTHeR), North-West University, Potchefstroom, South Africa
| | - Iolanthé M. Kruger
- Africa Unit for Transdisciplinary Health Reseach (AUTHeR), North-West University, Potchefstroom, South Africa
- * E-mail:
| |
Collapse
|
10
|
Phan DT, Nguyen CH, Nguyen TDP, Tran LH, Park S, Choi J, Lee BI, Oh J. A Flexible, Wearable, and Wireless Biosensor Patch with Internet of Medical Things Applications. BIOSENSORS 2022; 12:bios12030139. [PMID: 35323409 PMCID: PMC8945966 DOI: 10.3390/bios12030139] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/19/2022] [Accepted: 02/20/2022] [Indexed: 05/05/2023]
Abstract
Monitoring the vital signs and physiological responses of the human body in daily activities is particularly useful for the early diagnosis and prevention of cardiovascular diseases. Here, we proposed a wireless and flexible biosensor patch for continuous and longitudinal monitoring of different physiological signals, including body temperature, blood pressure (BP), and electrocardiography. Moreover, these modalities for tracking body movement and GPS locations for emergency rescue have been included in biosensor devices. We optimized the flexible patch design with high mechanical stretchability and compatibility that can provide reliable and long-term attachment to the curved skin surface. Regarding smart healthcare applications, this research presents an Internet of Things-connected healthcare platform consisting of a smartphone application, website service, database server, and mobile gateway. The IoT platform has the potential to reduce the demand for medical resources and enhance the quality of healthcare services. To further address the advances in non-invasive continuous BP monitoring, an optimized deep learning architecture with one-channel electrocardiogram signals is introduced. The performance of the BP estimation model was verified using an independent dataset; this experimental result satisfied the Association for the Advancement of Medical Instrumentation, and the British Hypertension Society standards for BP monitoring devices. The experimental results demonstrated the practical application of the wireless and flexible biosensor patch for continuous physiological signal monitoring with Internet of Medical Things-connected healthcare applications.
Collapse
Affiliation(s)
- Duc Tri Phan
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea; (D.T.P.); (C.H.N.); (T.D.P.N.); (L.H.T.); (S.P.); (J.C.)
- BK21 FOUR ‘New-Senior’ Oriented Smart Health Care Education, Pukyong National University, Busan 48513, Korea
| | - Cong Hoan Nguyen
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea; (D.T.P.); (C.H.N.); (T.D.P.N.); (L.H.T.); (S.P.); (J.C.)
- BK21 FOUR ‘New-Senior’ Oriented Smart Health Care Education, Pukyong National University, Busan 48513, Korea
| | - Thuy Dung Pham Nguyen
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea; (D.T.P.); (C.H.N.); (T.D.P.N.); (L.H.T.); (S.P.); (J.C.)
- BK21 FOUR ‘New-Senior’ Oriented Smart Health Care Education, Pukyong National University, Busan 48513, Korea
| | - Le Hai Tran
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea; (D.T.P.); (C.H.N.); (T.D.P.N.); (L.H.T.); (S.P.); (J.C.)
- BK21 FOUR ‘New-Senior’ Oriented Smart Health Care Education, Pukyong National University, Busan 48513, Korea
| | - Sumin Park
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea; (D.T.P.); (C.H.N.); (T.D.P.N.); (L.H.T.); (S.P.); (J.C.)
- BK21 FOUR ‘New-Senior’ Oriented Smart Health Care Education, Pukyong National University, Busan 48513, Korea
| | - Jaeyeop Choi
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea; (D.T.P.); (C.H.N.); (T.D.P.N.); (L.H.T.); (S.P.); (J.C.)
- BK21 FOUR ‘New-Senior’ Oriented Smart Health Care Education, Pukyong National University, Busan 48513, Korea
| | - Byeong-il Lee
- Department of Smart Healthcare, Pukyong National University, Busan 48513, Korea
- Correspondence: (B.-i.L.); (J.O.)
| | - Junghwan Oh
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea; (D.T.P.); (C.H.N.); (T.D.P.N.); (L.H.T.); (S.P.); (J.C.)
- BK21 FOUR ‘New-Senior’ Oriented Smart Health Care Education, Pukyong National University, Busan 48513, Korea
- Biomedical Engineering, Pukyong National University, Busan 48513, Korea
- Ohlabs Corporation, Busan 48513, Korea
- Correspondence: (B.-i.L.); (J.O.)
| |
Collapse
|
11
|
|
12
|
Park YJ. Association of autonomic function and brain activity with personality traits by paced breathing and su-soku practice: A three-way crossover study. Complement Ther Med 2021; 63:102778. [PMID: 34592421 DOI: 10.1016/j.ctim.2021.102778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/20/2021] [Accepted: 09/23/2021] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVES This study aimed to compare the effectiveness of paced breathing (PB) versus su-soku practice (spontaneous breathing with counting numbers) on autonomic function and brain activity and examine the associations between personality traits, brain activity, and autonomic function. DESIGN A three-way crossover study design. SETTING Thirty healthy Korean participants (15 men: 28.5 ± 4.7 years; 15 women: 27.7 ± 4.8 years) were asked to answer the Korean version of the 125-Temperament and Character Inventory (TCI). Three-way crossover design included normal PB (0.25 Hz), slow PB (0.1 Hz), and su-soku practice. Participants were randomly assigned to one of three groups (group A: su-soku/normal PB/slow PB; group B: normal PB/slow PB/su-soku; group C: slow PB/su-soku/normal PB). MAIN OUTCOME MEASURES The Korean version of the 125-TCI scores, electroencephalography (EEG), heart rate variability (HRV), and respiratory curve data. RESULTS EEG parameters between normal PB, slow PB, and su-soku showed no significant differences. High frequency and approximate entropy during normal PB and su-soku were higher than those during slow PB. Alpha band power related to well-focused alertness had strong negative correlations with the standard deviation of R-R intervals and square root of the mean of the sum of the squares of differences between adjacent R-R intervals during su-soku practice, while theta band power related to drowsiness had strong positive correlations with very low-frequency power during normal PB. Reflective and analytical individuals tended to be highly focused and alert during su-soku and normal PB, while anxious and unwilling individuals tended to focus on counting in and be drowsier during normal PB. CONCLUSIONS This study's findings suggest that the association between brain activity and autonomic function is affected by meditation type and personality traits.
Collapse
Affiliation(s)
- Young-Jae Park
- Department of Biofunctional Medicine and Diagnostics, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea; Department of Diagnosis and Biofunctional Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea.
| |
Collapse
|
13
|
Buto MSS, Vassimon-Barroso V, Fiogbé E, Farche ACS, Carnavale BF, Rossi PG, Sakaguchi CA, Catai AM, Takahashi ACM. Multicomponent exercise training in cardiovascular complexity in prefrail older adults: a randomized blinded clinical pilot study. ACTA ACUST UNITED AC 2021; 54:e10794. [PMID: 33909857 PMCID: PMC8075124 DOI: 10.1590/1414-431x202010794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/02/2021] [Indexed: 11/21/2022]
Abstract
The aim of this study was to investigate the effects of multicomponent training on baroreflex sensitivity (BRS) and heart rate (HR) complexity of prefrail older adults. Twenty-one prefrail community-dwelling older adults were randomized and divided into multicomponent training intervention group (MulTI) and control group (CG). MulTI performed multicomponent exercise training over 16 weeks and CG was oriented to follow their own daily activities. The RR interval (RRi) and blood pressure (BP) series were recorded for 15 min in supine and 15 min in orthostatic positions, and calculation of BRS (phase, coherence, and gain) and HR complexity (sample entropy) were performed. A linear mixed model was applied for group, assessments, and their interaction effects in supine position. The same test was used to assess the active postural maneuver and it was applied separately to each group considering assessments (baseline and post-intervention) and positions (supine and orthostatic). The significance level established was 5%. Cardiovascular control was impaired in prefrail older adults in supine position. Significant interactions were not observed between groups or assessments in terms of cardiovascular parameters. A 16-week multicomponent exercise training did not improve HR complexity or BRS in supine rest or in active postural maneuver in prefrail older adults.
Collapse
Affiliation(s)
- M S S Buto
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - V Vassimon-Barroso
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - E Fiogbé
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - A C S Farche
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - B F Carnavale
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - P G Rossi
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - C A Sakaguchi
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - A M Catai
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - A C M Takahashi
- Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| |
Collapse
|
14
|
Rector JL, Gijzel SMW, van de Leemput IA, van Meulen FB, Olde Rikkert MGM, Melis RJF. Dynamical indicators of resilience from physiological time series in geriatric inpatients: Lessons learned. Exp Gerontol 2021; 149:111341. [PMID: 33838217 DOI: 10.1016/j.exger.2021.111341] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/27/2021] [Accepted: 04/01/2021] [Indexed: 11/24/2022]
Abstract
The concept of physical resilience may help geriatric medicine objectively assess patients' ability to 'bounce back' from future health challenges. Indicators putatively forecasting resilience have been developed under two paradigms with different perspectives: Critical Slowing Down and Loss of Complexity. This study explored whether these indicators validly reflect the construct of resilience in geriatric inpatients. Geriatric patients (n = 121, 60% female) had their heart rate and physical activity continuously monitored using a chest-worn sensor. Indicators from both paradigms were extracted from both physiological signals. Measures of health functioning, concomitant with low resilience, were obtained by questionnaire at admission. The relationships among indicators and their associations with health functioning were assessed by correlation and linear regression analyses, respectively. Greater complexity and higher variance in physical activity were associated with lower frailty (β = -0.28, p = .004 and β = -0.37, p < .001, respectively) and better ADL function (β = 0.23, p = .022 and β = 0.38, p < .001). The associations of physical activity variance with health functioning were not in the expected direction based on Critical Slowing Down. In retrospect, these observations stress the importance of matching the resilience paradigm's assumptions to the homeostatic role of the variable monitored. We present several lessons learned.
Collapse
Affiliation(s)
- Jerrald L Rector
- Department of Geriatrics, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Sanne M W Gijzel
- Department of Geriatrics, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Environmental Sciences, Wageningen University, Wageningen, the Netherlands
| | | | - Fokke B van Meulen
- Department of Electrical Engineering, Eindhoven University of Technology, De Zaale, Eindhoven, the Netherlands; Sleep Medicine Center Kempenhaeghe, Sterkselseweg 65, Heeze, the Netherlands
| | - Marcel G M Olde Rikkert
- Department of Geriatrics, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - René J F Melis
- Department of Geriatrics, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| |
Collapse
|
15
|
Mujib Kamal S, Babini MH, Krejcar O, Namazi H. Complexity-Based Decoding of the Coupling Among Heart Rate Variability (HRV) and Walking Path. Front Physiol 2020; 11:602027. [PMID: 33324242 PMCID: PMC7723866 DOI: 10.3389/fphys.2020.602027] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 10/14/2020] [Indexed: 01/04/2023] Open
Abstract
Walking is an everyday activity in our daily life. Because walking affects heart rate variability, in this research, for the first time, we analyzed the coupling among the alterations of the complexity of walking paths and heart rate. We benefited from the fractal theory and sample entropy to evaluate the influence of the complexity of paths on the complexity of heart rate variability (HRV) during walking. We calculated the fractal exponent and sample entropy of the R-R time series for nine participants who walked on four paths with various complexities. The findings showed a strong coupling among the alterations of fractal dimension (an indicator of complexity) of HRV and the walking paths. Besides, the result of the analysis of sample entropy also verified the obtained results from the fractal analysis. In further studies, we can analyze the coupling among the alterations of the complexities of other physiological signals and walking paths.
Collapse
Affiliation(s)
| | | | - Ondrej Krejcar
- Center for Basic and Applied Research, Faculty of Informatics and Management, University of Hradec Králové, Hradec Králové, Czechia
| | - Hamidreza Namazi
- School of Engineering, Monash University Malaysia, Selangor, Malaysia.,Center for Basic and Applied Research, Faculty of Informatics and Management, University of Hradec Králové, Hradec Králové, Czechia
| |
Collapse
|
16
|
Goulart C, Caruso F, Arêas G, dos Santos P, Camargo P, de Carvalho L, Roscani M, Mendes R, Borghi-Silva A. Impact of chronic obstructive pulmonary disease on linear and nonlinear dynamics of heart rate variability in patients with heart failure. Braz J Med Biol Res 2020; 54:e10084. [PMID: 33263641 PMCID: PMC7695451 DOI: 10.1590/1414-431x202010084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 09/10/2020] [Indexed: 12/14/2022] Open
Abstract
The objective of this study was to investigate the impact of chronic obstructive pulmonary disease (COPD)-heart failure (HF) coexistence on linear and nonlinear dynamics of heart rate variability (HRV). Forty-one patients (14 with COPD-HF and 27 HF) were enrolled and underwent pulmonary function and echocardiography evaluation to confirm the clinical diagnosis. Heart rate (HR) and R-R intervals (iRR) were collected during active postural maneuver (APM) [supine (10 min) to orthostasis (10 min)], respiratory sinus arrhythmia maneuver (RSA-M) (4 min), and analysis of frequency domain, time domain, and nonlinear HRV. We found expected autonomic response during orthostatic changes with reduction of mean iRR, root mean square of successive differences between heart beats (RMSSD), RR tri index, and high-frequency [HF (nu)] and an increased mean HR, low-frequency [LF (nu)], and LF/HF (nu) compared with supine only in HF patients (P<0.05). Patients with COPD-HF coexistence did not respond to postural change. In addition, in the orthostatic position, higher HF nu and lower LF nu and LF/HF (nu) were observed in COPD-HF compared with HF patients. HF patients showed an opposite response during RSA-M, with increased sympathetic modulation (LF nu) and reduced parasympathetic modulation (HF nu) (P<0.05) compared with COPD-HF patients. COPD-HF directly influenced cardiac autonomic modulation during active postural change and controlled breathing, demonstrating an autonomic imbalance during sympathetic and parasympathetic maneuvers compared with isolated HF.
Collapse
Affiliation(s)
- C.L. Goulart
- Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - F.R. Caruso
- Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - G.P.T. Arêas
- Laboratório de Fisiologia Humana, Departamento de Fisiologia, Universidade Federal do Amazonas, Manaus, AM, Brasil
| | - P.B. dos Santos
- Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - P.F. Camargo
- Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - L.C.S. de Carvalho
- Centro de Ciência e Tecnologia em Energia e Sustentabilidade, Universidade Federal do Reconcavo da Bahia, Feira de Santana, BA, Brasil
| | - M.G. Roscani
- Departamento de Medicina, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - R.G. Mendes
- Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| | - A. Borghi-Silva
- Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil
| |
Collapse
|
17
|
Lu S, Liang Q, Huang Y, Meng F, Liu J. Definition and review on a category of long non-coding RNA: Atherosclerosis-associated circulating lncRNA (ASCLncRNA). PeerJ 2020; 8:e10001. [PMID: 33240586 PMCID: PMC7666546 DOI: 10.7717/peerj.10001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 08/29/2020] [Indexed: 12/18/2022] Open
Abstract
Atherosclerosis (AS) is one of the most common cardiovascular system diseases which seriously affects public health in modern society. Finding potential biomarkers in the complicated pathological progression of AS is of great significance for the prevention and treatment of AS. Studies have shown that long noncoding RNAs (lncRNAs) can be widely involved in the regulation of many physiological processes, and have important roles in different stages of AS formation. LncRNAs can be secreted into the circulatory system through exosomes, microvesicles, and apoptotic bodies. Recently, increasing studies have been focused on the relationships between circulating lncRNAs and AS development. The lncRNAs in circulating blood are expected to be new non-invasive diagnostic markers for monitoring the progression of AS. We briefly reviewed the previously reported lncRNA transcripts which related to AS development and detectable in circulating blood, including ANRIL, SENCR, CoroMarker, LIPCAR, HIF1α-AS1, LncRNA H19, APPAT, KCNQ1OT1, LncPPARδ, LincRNA-p21, MALAT1, MIAT, and UCA1. Further researches and a definition of atherosclerosis-associated circulating lncRNA (ASCLncRNA) were also discussed.
Collapse
Affiliation(s)
- Shanshan Lu
- Department of Histology and Embryology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Qin Liang
- Department of Histology and Embryology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Yanqing Huang
- Department of Histology and Embryology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Fanming Meng
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Junwen Liu
- Department of Histology and Embryology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China.,China-Africa Research Center of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, Hunan Province, China
| |
Collapse
|
18
|
Bajić D, Mišić N, Škorić T, Japundžić-Žigon N, Milovanović M. On Entropy of Probability Integral Transformed Time Series. ENTROPY (BASEL, SWITZERLAND) 2020; 22:E1146. [PMID: 33286915 PMCID: PMC7597301 DOI: 10.3390/e22101146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/27/2020] [Accepted: 10/09/2020] [Indexed: 11/17/2022]
Abstract
The goal of this paper is to investigate the changes of entropy estimates when the amplitude distribution of the time series is equalized using the probability integral transformation. The data we analyzed were with known properties-pseudo-random signals with known distributions, mutually coupled using statistical or deterministic methods that include generators of statistically dependent distributions, linear and non-linear transforms, and deterministic chaos. The signal pairs were coupled using a correlation coefficient ranging from zero to one. The dependence of the signal samples is achieved by moving average filter and non-linear equations. The applied coupling methods are checked using statistical tests for correlation. The changes in signal regularity are checked by a multifractal spectrum. The probability integral transformation is then applied to cardiovascular time series-systolic blood pressure and pulse interval-acquired from the laboratory animals and represented the results of entropy estimations. We derived an expression for the reference value of entropy in the probability integral transformed signals. We also experimentally evaluated the reliability of entropy estimates concerning the matching probabilities.
Collapse
Affiliation(s)
- Dragana Bajić
- Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, Serbia;
| | - Nataša Mišić
- Research and Development Institute Lola Ltd., 11000 Belgrade, Serbia;
| | - Tamara Škorić
- Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, Serbia;
| | | | - Miloš Milovanović
- Mathematical Institute of the Serbian Academy of Sciences and Arts, 11000 Beograd, Serbia;
| |
Collapse
|
19
|
Parameters Analysis of Sample Entropy, Permutation Entropy and Permutation Ratio Entropy for RR Interval Time Series. Inf Process Manag 2020. [DOI: 10.1016/j.ipm.2020.102283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
20
|
|
21
|
Neary JP, Singh J, Christiansen JP, Teckchandani TA, Potter KL. Causal Link between Ventricular Ectopy and Concussion. Case Rep Med 2020; 2020:7154120. [PMID: 32565823 PMCID: PMC7292985 DOI: 10.1155/2020/7154120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/30/2020] [Accepted: 05/09/2020] [Indexed: 11/23/2022] Open
Abstract
We present a unique case study report of a male individual with a history of mild nonischaemic cardiomyopathy, with no ventricular ectopy, that at the age of 76 years sustained multiple concussions (i.e., mild traumatic brain injury) within a week of each other. Concussion symptoms included cognitive difficulties, "not feeling well," lethargy, fatigue, and signs of depression. He was later medically diagnosed with postconcussion syndrome. The patient, WJT, was referred for cardiac and neurological assessment. Structural neuroimaging of the brain (MRI) was unremarkable, but electrocardiography (ECG) assessments using a 24-hour Holter monitor revealed significant incidence of ventricular ectopy (9.4%; 9,350/99,836 beats) over a period of 5-6 months after injury and then a further increase in ventricular ectopy to 18% (15,968/88,189 beats) during the subsequent 3 months. The patient was then prescribed Amiodarone 200 mg, and his ventricular ectopy and concussion symptoms completely resolved simultaneously within days. To the authors' knowledge, our study is the first to show a direct link between observable and documented cardiac dysregulation and concussion symptomology. Our study has important implications for both cardiac patients and the patients that sustain a concussion, and if medically managed with appropriate pharmacological intervention, it can reverse ventricular ectopy and concussion symptomology. More research is warranted to investigate the mechanisms for this dramatic and remarkable change in cardiac and cerebral functions and to further explore the brain-heart interaction and the intricate autonomic interaction that exists between the extrinsic and intracardiac nervous systems.
Collapse
Affiliation(s)
- J. Patrick Neary
- Faculty of Kinesiology & Health Studies, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada
| | - Jyotpal Singh
- Faculty of Kinesiology & Health Studies, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada
| | - Jonathan P. Christiansen
- University of Auckland, Faculty of Medical and Health Sciences, 85 Park Road, Grafton, Auckland 1023, New Zealand
| | - Taylor A. Teckchandani
- Faculty of Kinesiology & Health Studies, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada
| | - Kirsty L. Potter
- Waitemata Cardiology, 181 Shakespeare Road, Milford, Auckland 0620, New Zealand
| |
Collapse
|
22
|
Dynamic properties of glucose complexity during the course of critical illness: a pilot study. J Clin Monit Comput 2020; 34:361-370. [PMID: 30888595 DOI: 10.1007/s10877-019-00299-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 03/13/2019] [Indexed: 10/27/2022]
Abstract
Methods to control the blood glucose (BG) levels of patients in intensive care units (ICU) improve the outcomes. The development of continuous BG levels monitoring devices has also permitted to optimize these processes. Recently it was shown that a complexity loss of the BG signal is linked to poor clinical outcomes. Thus, it becomes essential to decipher this relation to design efficient BG level control methods. In previous studies the BG signal complexity was calculated as a single index for the whole ICU stay. Although, these approaches did not grasp the potential variability of the BG signal complexity. Therefore, we setup this pilot study using a continuous monitoring of central venous BG levels in ten critically ill patients (EIRUS platform, Maquet Critical CARE AB, Solna, Sweden). Data were processed and the complexity was assessed by the detrended fluctuation analysis and multiscale entropy (MSE) methods. Finally, recordings were split into 24 h overlapping intervals and a MSE analysis was applied to each of them. The MSE analysis on time intervals revealed an entropy variation and allowed periodic BG signal complexity assessments. To highlight differences of MSE between each time interval we calculated the MSE complexity index defined as the area under the curve. This new approach could pave the way to future studies exploring new strategies aimed at restoring blood glucose complexity during the ICU stay.
Collapse
|
23
|
Su S, Wu J, Gao Y, Luo Y, Yang D, Wang P. The pharmacological properties of chrysophanol, the recent advances. Biomed Pharmacother 2020; 125:110002. [PMID: 32066044 DOI: 10.1016/j.biopha.2020.110002] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 01/16/2020] [Accepted: 02/06/2020] [Indexed: 12/11/2022] Open
Abstract
As a universal Chinese medicine, Rhei Radix et Rhizoma was used for centuries in different fields including pharmaceutical, health care and cosmetics. Chrysophanol (Chr) is one of the most important anthraquinone components isolated from plants of the Rheum genus. Current reports show that in Rheum officinale, Chr is the most abundant free anthraquinone compound [1] and exerts a number of beneficial effects, such as anti-inflammation, anti-cancer, and anti-depressive effects and offers neuroprotection. We collected information about Chr from the Internet databases PubMed, Web of Science, Europe PMC and CNKI with a combination of keywords including "Chr", "Pharmacology", and "Pharmacokinetics". All data about this ingredient in this review were extracted from articles published before September 2019. Based on the literature found, we concluded that (1) Chr exhibited potential anti-inflammation, anti-cardiovascular disease (CVD)and anti-cancer activities by regulating signaling pathway transduction (NF-κB, MAPK, PI3K/Akt, etc.); (2) compared with free Chr, pharmacokinetic studies revealed that other forms of Chr, such as nanoparticle-based and liposome-based Chr, showed high bioavailability. Nevertheless, we also found that the understanding of the exact differences in the regulation of multiple molecular signaling pathways is in a preliminary stage and needs to be clarified. Moreover, further studies are required to determine the apoptotic mechanism of Chr in cancer cells. Finally, we found that (3) structure modification studies demonstrated potential relationships between structure and drug activity. The purpose of this review is to summarize the pharmacological activities, intracorporal processes and structure-activity relationships of Chr and to provide an up-to-date reference for further research and clinical applications.
Collapse
Affiliation(s)
- Siyu Su
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Jiasi Wu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yue Gao
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yu Luo
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Dong Yang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Ping Wang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China.
| |
Collapse
|
24
|
Harezlak K, Kasprowski P. Application of Time-Scale Decomposition of Entropy for Eye Movement Analysis. ENTROPY 2020; 22:e22020168. [PMID: 33285944 PMCID: PMC7516586 DOI: 10.3390/e22020168] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/20/2020] [Accepted: 01/30/2020] [Indexed: 11/16/2022]
Abstract
The methods for nonlinear time series analysis were used in the presented research to reveal eye movement signal characteristics. Three measures were used: approximate entropy, fuzzy entropy, and the Largest Lyapunov Exponent, for which the multilevel maps (MMs), being their time-scale decomposition, were defined. To check whether the estimated characteristics might be useful in eye movement events detection, these structures were applied in the classification process conducted with the usage of the kNN method. The elements of three MMs were used to define feature vectors for this process. They consisted of differently combined MM segments, belonging either to one or several selected levels, as well as included values either of one or all the analysed measures. Such a classification produced an improvement in the accuracy for saccadic latency and saccade, when compared with the previously conducted studies using eye movement dynamics.
Collapse
|
25
|
Chen C, Sun S, Cao Z, Shi Y, Sun B, Zhang XD. A comprehensive comparison and overview of R packages for calculating sample entropy. Biol Methods Protoc 2019; 4:bpz016. [PMID: 32161808 PMCID: PMC6994089 DOI: 10.1093/biomethods/bpz016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/06/2019] [Accepted: 11/17/2019] [Indexed: 11/21/2022] Open
Abstract
Sample entropy is a powerful tool for analyzing the complexity and irregularity of physiology signals which may be associated with human health. Nevertheless, the sophistication of its calculation hinders its universal application. As of today, the R language provides multiple open-source packages for calculating sample entropy. All of which, however, are designed for different scenarios. Therefore, when searching for a proper package, the investigators would be confused on the parameter setting and selection of algorithms. To ease their selection, we have explored the functions of five existing R packages for calculating sample entropy and have compared their computing capability in several dimensions. We used four published datasets on respiratory and heart rate to study their input parameters, types of entropy, and program running time. In summary, NonlinearTseries and CGManalyzer can provide the analysis of sample entropy with different embedding dimensions and similarity thresholds. CGManalyzer is a good choice for calculating multiscale sample entropy of physiological signal because it not only shows sample entropy of all scales simultaneously but also provides various visualization plots. MSMVSampEn is the only package that can calculate multivariate multiscale entropies. In terms of computing time, NonlinearTseries, CGManalyzer, and MSMVSampEn run significantly faster than the other two packages. Moreover, we identify the issues in MVMSampEn package. This article provides guidelines for researchers to find a suitable R package for their analysis and applications using sample entropy.
Collapse
Affiliation(s)
- Chang Chen
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Shixue Sun
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Zhixin Cao
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
- Beijing Engineering Research Center of Respiratory and Critical Care Medicine, Beijing, China
| | - Yan Shi
- School of Automation Science and Electrical Engineering, Beihang University, Beijing, China
| | - Baoqing Sun
- State Key Laboratory of Respiratory Disease, The 1st Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaohua Douglas Zhang
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
- Department of Biostatistics, Yale University, New Haven, CT06511, USA
| |
Collapse
|
26
|
Mohammadi A, Emamgoli A, Shirinkalam M, Meftahi GH, Yagoobi K, Hatef B. The persistent effect of acute psychosocial stress on heart rate variability. Egypt Heart J 2019; 71:18. [PMID: 31659513 PMCID: PMC6821413 DOI: 10.1186/s43044-019-0009-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 07/24/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As stress occurs repetitively every day, the biological modifiers should also have enough time to restore the normal state of hemostasis; otherwise, chronic stress would be anticipated. The aim of the present study was to examine the persistence of stress based on subjective emotion, salivary cortisol, and linear and non-linear features of heart rate variability (HRV) in both genders. METHODS Thirty-three healthy young volunteers (23 men and 10 women) participating in this study were exposed to the Trier Social Stress Test (TSST). Moreover, the emotional visual analog scale (EVAS), salivary cortisol, and ECG recording in the rest state were taken before and after TSST as well as 20 min after recovery. RESULTS According to the results of the two-way mixed model ANOVA, all volunteers showed a significant increase in EVAS after TSST which was restored to the baseline state after recovery. Notably, the women's base of cortisol was significantly higher than men and the standard range of kit. Cortisol elevation was only observed in the men, and the significant increase of LF/HF ratio was observed in the women, while both did not retain to the baseline after recovery. The SD1 of Poincaré plot and spectral entropy decreased after stress in both genders. Moreover, there was a significant negative correlation between baseline level of cortisol and its elevation due to stress and some features of HRV. CONCLUSION The base of cortisol played a critical role in modifying the physiological response to stress. In addition, after recovery, no stressful emotion remained, while the non-linear features of HRV did not return to baseline.
Collapse
Affiliation(s)
- Alireza Mohammadi
- Neuroscience Research Center, Baqiyatallah University of Medical Science, Mollasadra, Tehran, Iran
| | - Asgar Emamgoli
- Neuroscience Research Center, Baqiyatallah University of Medical Science, Mollasadra, Tehran, Iran
| | | | - Golam Hossein Meftahi
- Neuroscience Research Center, Baqiyatallah University of Medical Science, Mollasadra, Tehran, Iran
| | - Keyvan Yagoobi
- Traditional and Complementary Medicine University of Iran and Armenia, Physiology Department, Islamic Azad University (IAUPS), Tehran, Iran
| | - Boshra Hatef
- Neuroscience Research Center, Baqiyatallah University of Medical Science, Mollasadra, Tehran, Iran.
| |
Collapse
|
27
|
Chen X, Wang D, Lin J, Zhang T, Deng S, Huang L, Jin Y, Chen C, Zhang Z, Zheng J, Sun B, Bogdan P, Zhang XD. Analyzing Complexity and Fractality of Glucose Dynamics in a Pregnant Woman with Type 2 Diabetes under Treatment. Int J Biol Sci 2019; 15:2373-2380. [PMID: 31595155 PMCID: PMC6775315 DOI: 10.7150/ijbs.33825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 05/27/2019] [Indexed: 11/05/2022] Open
Abstract
Currently, the rapid development of continuous glucose monitoring (CGM) device brings new insights into the treatment of diabetic patients including those during pregnancy. Complexity and fractality have recently under fast development for extracting information embodied in glucose dynamics measured using CGM. Although scientists have investigated the difference of complexity in glucose dynamics between diabetes and non-diabetes in order to discover better approaches for diabetes care, no one has analyzed the complexity and fractality of glucose dynamics during the process of adopting CGM to successfully treat pregnant women with type 2 diabetes. Thus, we analyzed the complexity and fractality using power spectral density (PSD), multi-scale sample entropy (MSE) and multifractal detrended fluctuation analysis (MF-DFA) in a clinical case. Our results show that (i) there exists multifractal behavior in blood glucose dynamics; (ii) the alpha stable distribution fits to the glucose increment data better than the Gaussian distribution; and (iii) the "global" complexity indicated by multiscale entropy, spectrum exponent and Hurst exponent increase and the "local" complexity indicated by multifractal spectrum decrease after the successful therapy. Our results offer findings that may bring value to health care providers for managing glucose levels of pregnant women with type 2 diabetes as well as provide scientists a reference on applying complexity and fractality in the clinical practice of treating diabetes.
Collapse
Affiliation(s)
- Xiaoyan Chen
- Department of Endocrinology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, China
| | - Dandan Wang
- Faculty of Health Sciences, University of Macau, Taipa 999078, Macau
| | - Jinxiang Lin
- Department of Endocrinology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, China
| | - Teng Zhang
- Faculty of Health Sciences, University of Macau, Taipa 999078, Macau
| | - Shunyou Deng
- Department of Endocrinology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, China
| | - Lianyi Huang
- Department of Endocrinology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, China
| | - Yu Jin
- Faculty of Health Sciences, University of Macau, Taipa 999078, Macau
| | - Chang Chen
- Faculty of Health Sciences, University of Macau, Taipa 999078, Macau
| | - Zhaozhi Zhang
- Department of Statistical Science, Duke University, Durham, NC 27708, USA
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Taipa 999078, Macau
| | - Baoqing Sun
- Department of Allergy and Clinical Immunology, Guangzhou Institute of Respiratory Diseases, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, China
| | - Paul Bogdan
- Department of Electrical Engineering - Systems, University of Southern California, CA 90089, USA
| | | |
Collapse
|
28
|
Refined Multiscale Entropy Using Fuzzy Metrics: Validation and Application to Nociception Assessment. ENTROPY 2019; 21:e21070706. [PMID: 33267420 PMCID: PMC7515221 DOI: 10.3390/e21070706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 07/15/2019] [Accepted: 07/16/2019] [Indexed: 01/04/2023]
Abstract
The refined multiscale entropy (RMSE) approach is commonly applied to assess complexity as a function of the time scale. RMSE is normally based on the computation of sample entropy (SampEn) estimating complexity as conditional entropy. However, SampEn is dependent on the length and standard deviation of the data. Recently, fuzzy entropy (FuzEn) has been proposed, including several refinements, as an alternative to counteract these limitations. In this work, FuzEn, translated FuzEn (TFuzEn), translated-reflected FuzEn (TRFuzEn), inherent FuzEn (IFuzEn), and inherent translated FuzEn (ITFuzEn) were exploited as entropy-based measures in the computation of RMSE and their performance was compared to that of SampEn. FuzEn metrics were applied to synthetic time series of different lengths to evaluate the consistency of the different approaches. In addition, electroencephalograms of patients under sedation-analgesia procedure were analyzed based on the patient’s response after the application of painful stimulation, such as nail bed compression or endoscopy tube insertion. Significant differences in FuzEn metrics were observed over simulations and real data as a function of the data length and the pain responses. Findings indicated that FuzEn, when exploited in RMSE applications, showed similar behavior to SampEn in long series, but its consistency was better than that of SampEn in short series both over simulations and real data. Conversely, its variants should be utilized with more caution, especially whether processes exhibit an important deterministic component and/or in nociception prediction at long scales.
Collapse
|
29
|
Dong X, Chen C, Geng Q, Cao Z, Chen X, Lin J, Jin Y, Zhang Z, Shi Y, Zhang XD. An Improved Method of Handling Missing Values in the Analysis of Sample Entropy for Continuous Monitoring of Physiological Signals. ENTROPY 2019; 21:e21030274. [PMID: 33266989 PMCID: PMC7514754 DOI: 10.3390/e21030274] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/08/2019] [Accepted: 03/09/2019] [Indexed: 11/17/2022]
Abstract
Medical devices generate huge amounts of continuous time series data. However, missing values commonly found in these data can prevent us from directly using analytic methods such as sample entropy to reveal the information contained in these data. To minimize the influence of missing points on the calculation of sample entropy, we propose a new method to handle missing values in continuous time series data. We use both experimental and simulated datasets to compare the performance (in percentage error) of our proposed method with three currently used methods: skipping the missing values, linear interpolation, and bootstrapping. Unlike the methods that involve modifying the input data, our method modifies the calculation process. This keeps the data unchanged which is less intrusive to the structure of the data. The results demonstrate that our method has a consistent lower average percentage error than other three commonly used methods in multiple common physiological signals. For missing values in common physiological signal type, different data size and generating mechanism, our method can more accurately extract the information contained in continuously monitored data than traditional methods. So it may serve as an effective tool for handling missing values and may have broad utility in analyzing sample entropy for common physiological signals. This could help develop new tools for disease diagnosis and evaluation of treatment effects.
Collapse
Affiliation(s)
- Xinzheng Dong
- School of Software Engineering, South China University of Technology, Guangzhou 510006, China;
- Zhuhai Laboratory of Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, Zhuhai College of Jilin University, Zhuhai 519041, China
| | - Chang Chen
- Faculty of Health Sciences, University of Macau, Taipa, Macau 999078, China; (C.C.); (Y.J.)
| | - Qingshan Geng
- Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou 510080, China;
| | - Zhixin Cao
- Beijing Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China; (Z.C.); (Y.S.)
| | - Xiaoyan Chen
- Department of Endocrinology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; (X.C.); (J.L.)
| | - Jinxiang Lin
- Department of Endocrinology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; (X.C.); (J.L.)
| | - Yu Jin
- Faculty of Health Sciences, University of Macau, Taipa, Macau 999078, China; (C.C.); (Y.J.)
| | - Zhaozhi Zhang
- School of Law, Washington University, St. Louis, MO 63130, USA;
| | - Yan Shi
- Beijing Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China; (Z.C.); (Y.S.)
- Department of Mechanical and Electronic Engineering, Beihang University, Beijing 100191, China
| | - Xiaohua Douglas Zhang
- Faculty of Health Sciences, University of Macau, Taipa, Macau 999078, China; (C.C.); (Y.J.)
- Correspondence: ; Tel: +853-8822-4813
| |
Collapse
|
30
|
Omidvarnia A, Mesbah M, Pedersen M, Jackson G. Range Entropy: A Bridge between Signal Complexity and Self-Similarity. ENTROPY 2018; 20:e20120962. [PMID: 33266686 PMCID: PMC7512560 DOI: 10.3390/e20120962] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/03/2018] [Accepted: 12/06/2018] [Indexed: 11/16/2022]
Abstract
Approximate entropy (ApEn) and sample entropy (SampEn) are widely used for temporal complexity analysis of real-world phenomena. However, their relationship with the Hurst exponent as a measure of self-similarity is not widely studied. Additionally, ApEn and SampEn are susceptible to signal amplitude changes. A common practice for addressing this issue is to correct their input signal amplitude by its standard deviation. In this study, we first show, using simulations, that ApEn and SampEn are related to the Hurst exponent in their tolerance r and embedding dimension m parameters. We then propose a modification to ApEn and SampEn called range entropy or RangeEn. We show that RangeEn is more robust to nonstationary signal changes, and it has a more linear relationship with the Hurst exponent, compared to ApEn and SampEn. RangeEn is bounded in the tolerance r-plane between 0 (maximum entropy) and 1 (minimum entropy) and it has no need for signal amplitude correction. Finally, we demonstrate the clinical usefulness of signal entropy measures for characterisation of epileptic EEG data as a real-world example.
Collapse
Affiliation(s)
- Amir Omidvarnia
- The Florey Institute of Neuroscience and Mental Health, Austin Campus, Heidelberg, VIC 3084, Australia
- Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, VIC 3010, Australia
- Correspondence: ; Tel.: +61-3-9035-7182
| | - Mostefa Mesbah
- Department of Electrical and Computer Engineering, Sultan Qaboos University, Muscat 123, Oman
| | - Mangor Pedersen
- The Florey Institute of Neuroscience and Mental Health, Austin Campus, Heidelberg, VIC 3084, Australia
| | - Graeme Jackson
- The Florey Institute of Neuroscience and Mental Health, Austin Campus, Heidelberg, VIC 3084, Australia
- Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, VIC 3010, Australia
- Department of Neurology, Austin Health, Melbourne, VIC 3084, Australia
| |
Collapse
|
31
|
Xue M, Wang D, Zhang Z, Cao Z, Luo Z, Zheng Y, Lu J, Zhao Q, Zhang XD. Demonstrating the Potential of Using Transcutaneous Oxygen and Carbon Dioxide Tensions to Assess the Risk of Pressure Injuries. Int J Biol Sci 2018; 14:1466-1471. [PMID: 30262998 PMCID: PMC6158733 DOI: 10.7150/ijbs.26987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 06/22/2018] [Indexed: 02/04/2023] Open
Abstract
Pressure injuries have a high incidence in elderly and critically ill patients, and can endanger lives in severe cases. The key to reducing the incidence of pressure injuries is to find an objective, noninvasive, automatic and consistent scientific method for assessing pressure injuries. To serve this need, we conducted a clinical study to investigate the potential of using transcutaneous oxygen tension (TcPO2) and transcutaneous carbon dioxide tension (TcPCO2) for assessing pressure injuries. From the results of the study we found that first, the values of TcPO2 and TcPCO2 are sensitive to the change of pressure imposed on the measured region and to the risk status of a pressure injury when a pressure is imposed. Second, the magnitude of change in TcPO2 and TcPCO2 is higher in patients with a high risk of a pressure injury compared with those who have a low risk. Third, TcPO2 and TcPCO2 are both significantly correlated with the Braden score, the widely used score for assessing the risk of a pressure injury. Therefore, TcPO2 and TcPCO2 have a potential to be an effective and convenient scientific tool for assessing the risk of pressure injuries.
Collapse
Affiliation(s)
- Mei Xue
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University; Beijing Institute of Respiratory Medicine, Beijing Engineering Research Center of Respiratory and Critical Care Medicine, Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China
| | - Dandan Wang
- Faculty of Health Sciences, University of Macau, Taipa 999078, Macau
| | - Zhaozhi Zhang
- Department of Statistical Science, Duke University, Durham, NC 27708, USA
| | - Zhixin Cao
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University; Beijing Institute of Respiratory Medicine, Beijing Engineering Research Center of Respiratory and Critical Care Medicine, Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China
| | - Zujin Luo
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University; Beijing Institute of Respiratory Medicine, Beijing Engineering Research Center of Respiratory and Critical Care Medicine, Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China
| | - Yingying Zheng
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University; Beijing Institute of Respiratory Medicine, Beijing Engineering Research Center of Respiratory and Critical Care Medicine, Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China
| | - Jingjing Lu
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University; Beijing Institute of Respiratory Medicine, Beijing Engineering Research Center of Respiratory and Critical Care Medicine, Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China
| | - Qi Zhao
- Faculty of Health Sciences, University of Macau, Taipa 999078, Macau
| | | |
Collapse
|
32
|
Sun S, Jin Y, Chen C, Sun B, Cao Z, Lo IL, Zhao Q, Zheng J, Shi Y, Zhang XD. Entropy Change of Biological Dynamics in Asthmatic Patients and Its Diagnostic Value in Individualized Treatment: A Systematic Review. ENTROPY (BASEL, SWITZERLAND) 2018; 20:E402. [PMID: 33265493 PMCID: PMC7512921 DOI: 10.3390/e20060402] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/12/2018] [Accepted: 04/23/2018] [Indexed: 12/21/2022]
Abstract
Asthma is a chronic respiratory disease featured with unpredictable flare-ups, for which continuous lung function monitoring is the key for symptoms control. To find new indices to individually classify severity and predict disease prognosis, continuous physiological data collected from monitoring devices is being studied from different perspectives. Entropy, as an analysis method for quantifying the inner irregularity of data, has been widely applied in physiological signals. However, based on our knowledge, there is no such study to summarize the complexity differences of various physiological signals in asthmatic patients. Therefore, we organized a systematic review to summarize the complexity differences of important signals in patients with asthma. We searched several medical databases and systematically reviewed existing asthma clinical trials in which entropy changes in physiological signals were studied. As a conclusion, we find that, for airflow, heart rate variability, center of pressure and respiratory impedance, their entropy values decrease significantly in asthma patients compared to those of healthy people, while, for respiratory sound and airway resistance, their entropy values increase along with the progression of asthma. Entropy of some signals, such as respiratory inter-breath interval, shows strong potential as novel indices of asthma severity. These results will give valuable guidance for the utilization of entropy in physiological signals. Furthermore, these results should promote the development of management and diagnosis of asthma using continuous monitoring data in the future.
Collapse
Affiliation(s)
- Shixue Sun
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Yu Jin
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Chang Chen
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Baoqing Sun
- State Key Laboratory of Respiratory Disease, the 1st Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China
| | - Zhixin Cao
- Beijing Engineering Research Center of Diagnosis and Treatment of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Beijing 100043, China
| | - Iek Long Lo
- Department of Geriatrics, Centro Hospital Conde de Sao Januario, Macau, China
| | - Qi Zhao
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Taipa, Macau, China
| | - Yan Shi
- Department of Mechanical and Electronic Engineering, Beihang University, Beijing 100191, China
| | | |
Collapse
|
33
|
Fazan FS, Brognara F, Fazan Junior R, Murta Junior LO, Virgilio Silva LE. Changes in the Complexity of Heart Rate Variability with Exercise Training Measured by Multiscale Entropy-Based Measurements. ENTROPY 2018; 20:e20010047. [PMID: 33265153 PMCID: PMC7512234 DOI: 10.3390/e20010047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 01/04/2018] [Accepted: 01/08/2018] [Indexed: 11/16/2022]
Abstract
Quantifying complexity from heart rate variability (HRV) series is a challenging task, and multiscale entropy (MSE), along with its variants, has been demonstrated to be one of the most robust approaches to achieve this goal. Although physical training is known to be beneficial, there is little information about the long-term complexity changes induced by the physical conditioning. The present study aimed to quantify the changes in physiological complexity elicited by physical training through multiscale entropy-based complexity measurements. Rats were subject to a protocol of medium intensity training ( n = 13 ) or a sedentary protocol ( n = 12 ). One-hour HRV series were obtained from all conscious rats five days after the experimental protocol. We estimated MSE, multiscale dispersion entropy (MDE) and multiscale SDiff q from HRV series. Multiscale SDiff q is a recent approach that accounts for entropy differences between a given time series and its shuffled dynamics. From SDiff q , three attributes (q-attributes) were derived, namely SDiff q m a x , q m a x and q z e r o . MSE, MDE and multiscale q-attributes presented similar profiles, except for SDiff q m a x . q m a x showed significant differences between trained and sedentary groups on Time Scales 6 to 20. Results suggest that physical training increases the system complexity and that multiscale q-attributes provide valuable information about the physiological complexity.
Collapse
Affiliation(s)
- Frederico Sassoli Fazan
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14049-900, Brazil
| | - Fernanda Brognara
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14049-900, Brazil
| | - Rubens Fazan Junior
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14049-900, Brazil
| | - Luiz Otavio Murta Junior
- Department of Computing and Mathematics, School of Philosophy, Sciences and Languages of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14040-901, Brazil
| | - Luiz Eduardo Virgilio Silva
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14049-900, Brazil
- Department of Computer Science, Institute of Mathematics and Computer Sciences, University of São Paulo, São Carlos, SP 13566-590, Brazil
- Correspondence:
| |
Collapse
|