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Entropy 2019, 21(4), 347; https://doi.org/10.3390/e21040347

Transfer Information Assessment in Diagnosis of Vasovagal Syncope Using Transfer Entropy

1
Department of Theoretical Foundations of Bio-Medical Science and Medical Informatics, Collegium Medicum, Nicolaus Copernicus University, 85-067 Bydgoszcz, Poland
2
Department of Emergency Medicine, Wroclaw Medical University, 50-556 Wroclaw, Poland
3
1st Chair and Department of Cardiology, Medical University of Warsaw, 02-097 Warsaw, Poland
4
Department of Cardiology and Internal Diseases, Collegium Medicum, Nicolaus Copernicus University, 85-067 Bydgoszcz, Poland
*
Author to whom correspondence should be addressed.
Received: 8 February 2019 / Revised: 25 March 2019 / Accepted: 26 March 2019 / Published: 29 March 2019
(This article belongs to the Special Issue The 20th Anniversary of Entropy - Approximate and Sample Entropy)
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Abstract

The paper presents an application of Transfer Entropy (TE) to the analysis of information transfer between biosignals (heart rate expressed as R-R intervals (RRI), blood pressure (sBP, dBP) and stroke volume (SV)) measured during head up tilt testing (HUTT) in patients with suspected vasovagal syndrome. The study group comprised of 80 patients who were divided into two groups: the HUTT(+) group consisting of 57 patients who developed syncope during the passive phase of the test and HUTT(−) group consisting of 23 patients who had a negative result of the passive phase and experienced syncope after provocation with nitroglycerin. In both groups the information transfer depends on the phase of the tilt test. In supine position the highest transfer occurred between driver RRI and other components. In upright position it is the driver sBP that plays the crucial role. The pre-syncope phase features the highest information transfer from driver SV to blood pressure components. In each group the comparisons of TE between different phases of HUT test showed significant differences for RRI and SV as drivers. View Full-Text
Keywords: transfer entropy; vasovagal syndrome; head up tilt test transfer entropy; vasovagal syndrome; head up tilt test
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Buszko, K.; Piątkowska, A.; Koźluk, E.; Fabiszak, T.; Opolski, G. Transfer Information Assessment in Diagnosis of Vasovagal Syncope Using Transfer Entropy. Entropy 2019, 21, 347.

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