Deceleration capacity—a novel measure for autonomic nervous system in patients with vasovagal syncope on tilt-table testing

2017 ◽  
Vol 37 (3) ◽  
pp. 326-331 ◽  
Author(s):  
Fen Huang ◽  
Chun-fang Xu ◽  
Xiao-yan Deng ◽  
Ping Zuo ◽  
Fan Lin ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Vasovagal Syncope ◽  
Tilt Table ◽  
Deceleration Capacity ◽  
Autonomic Nervous ◽  
Tilt Table Testing

Reproducibility of Tilt Table Testing in Patients With Vasovagal Syncope and Its Relation to Variations in Autonomic Nervous System Activity

1998 ◽  
Vol 21 (5) ◽  
pp. 1069-1076 ◽  
Author(s):  
GEORGE E. KOCHIADAKIS ◽  
EMMANUEL M. KANOUPAKIS ◽  
AMALIA T. ROMBOLA ◽  
NIKOS E. IGOUMENIDIS ◽  
GREGORY I. CHLOUVERAKIS ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Vasovagal Syncope ◽  
Tilt Table ◽  
Autonomic Nervous System Activity ◽  
System Activity ◽  
Autonomic Nervous ◽  
Nervous System Activity ◽  
Tilt Table Testing

Spectral analysis of heart rate in vasovagal syncope: The autonomic nervous system in vasovagal syncope

1993 ◽  
Vol 3 (4) ◽  
pp. 261-269 ◽  
Author(s):  
A. Baharav ◽  
M. Mimouni ◽  
T. Lehrman-Sagie ◽  
S. Izraeli ◽  
S. Akselrod
Keyword(s):  
Heart Rate ◽  
Nervous System ◽  
Spectral Analysis ◽  
Autonomic Nervous System ◽  
Vasovagal Syncope ◽  
Autonomic Nervous

scholarly journals Beta 3 subunit of G-protein and its influence on autonomic nervous system in patients with vasovagal syncope

2016 ◽  
Vol 116 (03) ◽  
pp. 142-147
Author(s):  
L. Evin ◽  
P. Mitro ◽  
V. Habalova ◽  
M. Simurda ◽  
E. Muller ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
G Protein ◽  
Vasovagal Syncope ◽  
Autonomic Nervous

Mitochondrial insufficiency is associated with autonomic nervous system dysfunction as confirmed by physiologic Head up Tilt table test (HUTT)

Mitochondrion ◽  
2013 ◽  
Vol 13 (6) ◽  
pp. 918-919
Author(s):  
Mohammed Numan ◽  
Ian Butler ◽  
Rebecca Martinez ◽  
Melissa Knight ◽  
Nada Memon ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Tilt Table Test ◽  
Tilt Table ◽  
Autonomic Nervous System Dysfunction ◽  
Autonomic Nervous ◽  
Head Up Tilt

Heart Rate Variability and Autonomic Nervous System Changes in Children with Vasovagal Syncope

2002 ◽  
Vol 25 (9) ◽  
pp. 1331-1338 ◽  
Author(s):  
DURSUN ALEHAN ◽  
CANAN AYABAKAN ◽  
SEMA OZER
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Vasovagal Syncope ◽  
Autonomic Nervous ◽  
System Changes

Influence of tilt training on activation of the autonomic nervous system in patients with vasovagal syncope

2006 ◽  
Vol 61 (2) ◽  
pp. 123-128 ◽  
Author(s):  
Jacek GAJEK ◽  
Dorota ZYŚKO ◽  
Bogumił HALAWA ◽  
Walentyna MAZUREK
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Vasovagal Syncope ◽  
Autonomic Nervous

scholarly journals Nonlinear and Conventional Biosignal Analyses Applied to Tilt Table Test for Evaluating Autonomic Nervous System and Autoregulation

2013 ◽  
Vol 7 (1) ◽  
pp. 93-99 ◽  
Author(s):  
Li Tseng ◽  
Sung-Chun Tang ◽  
Chun-Yuan Chang ◽  
Yi-Ching Lin ◽  
Maysam F. Abbod ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Multiscale Entropy ◽  
Total Power ◽  
Tilt Table Test ◽  
Tilt Table ◽  
Autonomic Nervous ◽  
Three Stages ◽  
Normal Controls ◽  
Better Than

Tilt table test (TTT) is a standard examination for patients with suspected autonomic nervous system (ANS) dysfunction or uncertain causes of syncope. Currently, the analytical method based on blood pressure (BP) or heart rate (HR) changes during the TTT is linear but normal physiological modulations of BP and HR are thought to be predominately nonlinear. Therefore, this study consists of two parts: the first part is analyzing the HR during TTT which is compared to three methods to distinguish normal controls and subjects with ANS dysfunction. The first method is power spectrum density (PSD), while the second method is detrended fluctuation analysis (DFA), and the third method is multiscale entropy (MSE) to calculate the complexity of system. The second part of the study is to analyze BP and cerebral blood flow velocity (CBFV) changes during TTT. Two measures were used to compare the results, namely correlation coefficient analysis (nMxa) and MSE. The first part of this study has concluded that the ratio of the low frequency power to total power of PSD, and MSE methods are better than DFA to distinguish the difference between normal controls and patients groups. While in the second part, the nMxa of the three stages moving average window is better than the nMxa with all three stages together. Furthermore the analysis of BP data using MSE is better than CBFV data.

scholarly journals The features of autonomic nervous system homeostasis and adaptive potential in children with syncope

2021 ◽  
pp. 5-14
Author(s):  
T.A. Kovalchuk ◽  
◽  
N.Yu. Luchyshyn ◽  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Orthostatic Hypotension ◽  
Vasovagal Syncope ◽  
Circulatory System ◽  
Study Groups ◽  
Adaptive Potential ◽  
Autonomic Nervous ◽  
Cardiogenic Syncope ◽  
Autonomic Support

The investigation of the nature of syncope shows that it is caused by failure of compensatory reflex mechanisms of the autonomic nervous system. Therefore, the determination of specific parameters of autonomic nervous system homeostasis and adaptive potential improves the approach to determining the clinical predictors of the syncope and facilitate its early diagnosis. Purpose — to determine the nature and compare of autonomic dysregulation and functional changes of in children with syncope of different genesis, to identify the circumstances for the formation of insufficient autonomic regulation. Materials and methods. The enrolled subjects were 125 children with syncope, aged 8–17 years, and 41 controls. Children were divided into three groups for analysis: 81 — with vasovagal syncope, 25 — with syncope due to orthostatic hypotension, 19 — with cardiogenic syncope. All children underwent a clinical and functional examination of the cardiovascular system to identify features of autonomic homeostasis. Results. Autonomic imbalance with a predominance of sympathetic autonomic regulation was detected in children of all study groups. The results of functional tests and quantitative integrative indicators showed significantly increased autonomic reactivity with depletion of adaptive potential in all study groups (p<0.05). Children with vasovagal syncope had excessive levels more often (p<0.05), and children with syncope due to orthostatic hypotension had insufficient levels of autonomic support (p<0.05). Violations of cardiorespiratory inter systemic connections were found in children with vasovagal and cardiogenic syncope significantly more often, compared to the control group (p <0.05). Correlations were found between the parameters of the initial autonomic balance, autonomic support of the circulatory system, and the manifestations of syncope in children. Conclusions. The correlation between pathological types of autonomic response and the frequency and duration of syncopal episode indicates a pathogenetic relationship between the state of autonomic support and the ability of the circulatory system to respond to triggers. Therefore, indicators of the autonomic homeostasis and adaptive potential can be applied for predicting the occurrence of syncopal episodes and monitoring of effective management of syncope in children. The research was carried out in accordance with the principles of the Helsinki Declaration. The study protocol was approved by the Local Ethics Committee of all participating institution. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: children, syncope, autonomic nervous system homeostasis, adaptive potential.

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