NDLI: Temporal analysis of cardiac autonomic regulation during orthostatic challenge by short-term symbolic dynamics

Content Provider	IEEE Xplore Digital Library
Author	Reulecke, S. Charleston-Villalobos, S. Voss, A. Gonzalez-Camarena, R. Gaitan-Gonzalez, M.J. Gonzalez-Hermosillo, J. Hernandez-Pacheco, G. Aljama-Corrales, T.
Copyright Year	2015
Description	Author affiliation: Nat. Inst. of Cardiology, Mexico City, Mexico (Gaitan-Gonzalez, M.J.; Hernandez-Pacheco, G.) \|\| Health Sci. Dept., Univ. Autonoma Metropolitana, Mexico City, Mexico (Gonzalez-Camarena, R.) \|\| Electr. Eng. Dept., Univ. Autonoma Metropolitana, Mexico City, Mexico (Reulecke, S.; Charleston-Villalobos, S.; Gonzalez-Hermosillo, J.; Aljama-Corrales, T.) \|\| Dept. of Med. Eng. & Biotechnol., Univ. of Appl. Sci. Jena, Jena, Germany (Voss, A.)
Abstract	The gradual shift of cardiac autonomic regulation toward sympathetic predominance and vagal withdrawal during graded head-up tilt test in young controls has been demonstrated by parameters from symbolic dynamics obtained from short-term heart rate variability (HRV) analysis. In this study, the influence of gender and vasovagal syncope (VVS) on the autonomic response to an orthostatic challenge was investigated by HRV analysis using short-term symbolic dynamics (STSD). This study included 24 healthy young subjects (12 males; 12 age-matched females) and 16 female patients diagnosed with VVS. All subjects were enrolled in a head-up tilt (HUT) test, breathing normally, including 5 minutes of supine position (baseline) and 20-40 minutes of 70° orthostatic phase. The STSD parameters were obtained following their behavior at different times during the HUT test, i.e., at baseline, early and middle orthostatic phases. Gender differences including increased sympathetic activity in men were already present in baseline and in the middle tilt phase. In baseline there were no differences between female controls and female patients, but parameters from STSD showed highly significantly (p=0.0007) reduced heart rate variability due to increased sympathetic activity in female patients in the middle tilt phase. Furthermore a new nonlinear index for the estimation of sympatho-vagal balance was introduced.
Starting Page	2067
Ending Page	2070
File Size	847228
Page Count	4
File Format	PDF
ISSN	1557170X
e-ISBN	9781424492718
DOI	10.1109/EMBC.2015.7318794
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-25
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Indexes Heart rate variability Finite element analysis Modulation Stress Cities and towns
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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