Physiological dynamics of heart rate variability: a statistical modeling approach in vasovagal syncope
نویسندگان
چکیده
منابع مشابه
Entropy Measures in the Assessment of Heart Rate Variability in Patients with Cardiodepressive Vasovagal Syncope
Sample entropy (SampEn) was reported to be useful in the assessment of the complexity of heart rate dynamics. Permutation entropy (PermEn) is a new measure based on the concept of order and was previously shown to be accurate for short, non-stationary datasets. The aim of the present study is to assess if SampEn and PermEn obtained from baseline recordings might differentiate patients with vari...
متن کاملBaseline heart rate variability in children and adolescents with vasovagal syncope
PURPOSE This study aimed to evaluate the autonomic imbalance in syncope by comparing the baseline heart rate variability (HRV) between healthy children and those with vasovagal syncope. METHODS To characterize the autonomic profile in children experiencing vasovagal syncope, we evaluated the HRV of 23 patients aged 7-18 years and 20 healthy children. These children were divided into preadoles...
متن کاملHeart rate and blood pressure variability in subjects with vasovagal syncope.
Autonomic nervous system control in subjects with vasovagal syncope is controversial. In the present study, we used short-term spectral analysis to evaluate autonomic control in subjects with recurrent vasovagal syncope. We assessed the ability of spectral indices of HR (heart rate) variability to predict tilt-test responses. A series of 47 outpatients with recurrent vasovagal syncope and with ...
متن کاملPrediction of vasovagal syncope from heart rate and blood pressure trend and variability: experience in 1,155 patients.
BACKGROUND Vasovagal syncope (VVS) is a complex fainting disorder commonly triggered by orthostatic stress. OBJECTIVE We developed an algorithm for VVS prediction based on the joint assessment of RR interval (RR) and systolic blood pressure (SBP). METHODS Simultaneous analysis of RR and SBP trends during head-up tilt as well as their variability represented by low-frequency power (LFRR and ...
متن کاملVasovagal syncope and vasovagal disease.
(Hellenic Journal of Cardiology) HJC ñ 61 I solated vasovagal syncope (VVS) is not a disease, but rather the clinical manifestation of an autonomic reflex to which all (or almost all) individuals are predisposed. Why certain subjects appear to be more susceptible than others to the development of paradoxical hypotension and bradycardia, and why the event occurs at one time and not another, rema...
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ژورنال
عنوان ژورنال: Millenium - Journal of Education, Technologies, and Health
سال: 2016
ISSN: 0873-3015,1647-662X
DOI: 10.29352/mill0201.03.00049