Linear and nonlinear analyses of heart rate variability following orthostatism in subclinical hypothyroidism
نویسندگان
چکیده
منابع مشابه
Linear and Nonlinear Heart Rate Variability Indexes in Clinical Practice
Biological organisms have intrinsic control systems that act in response to internal and external stimuli maintaining homeostasis. Human heart rate is not regular and varies in time and such variability, also known as heart rate variability (HRV), is not random. HRV depends upon organism's physiologic and/or pathologic state. Physicians are always interested in predicting patient's risk of deve...
متن کاملHeart rate variability in multibacillar leprosy: Linear and nonlinear analysis
OBJECTIVE To evaluate the heart rate variability (HRV) in patients with multibacillary leprosy using dynamic linear and nonlinear analysis. MATERIAL AND METHODS Twenty-one leprosy patients (mean age: 39.14 ±10.58 years) and 21 healthy subjects (mean age: 36.24 ± 12.64 years) completed the sample. Heart rate variability recording was performed by a Polar RS800 CX heart monitor during a period ...
متن کاملSometimes higher heart rate variability is not better heart rate variability: results of graphical and nonlinear analyses.
OBJECTIVE To determine the prevalence and effect on traditional heart rate variability (HRV) indices of abnormal HRV patterns in the elderly. METHODS Hourly Poincaré plots and plots of spectral HRV from normal-to-normal interbeat intervals and hourly nonlinear HRV values were examined in a subset of 290 consecutive participants in the Cardiovascular Health Study. Only subjects in normal sinus...
متن کاملInverse Correlation between Heart Rate Variability and Heart Rate Demonstrated by Linear and Nonlinear Analysis
The dynamical fluctuations in the rhythms of biological systems provide valuable information about the underlying functioning of these systems. During the past few decades analysis of cardiac function based on the heart rate variability (HRV; variation in R wave to R wave intervals) has attracted great attention, resulting in more than 17000-publications (PubMed list). However, it is still cont...
متن کاملHeart Rate Turbulence Analysis in Subclinical Hypothroidism Heart Rate Turbulence in Hypothyroidism.
BACKGROUND Heart rate turbulence (HRT) is a baroreflex-mediated biphasic reaction of heart rate in response to premature ventricular beats. Abnormal HRT identifies patients with autonomic dysfunction or impaired baroreflex sensitivity. The aim of the present study was to demonstrate the effect of subclinical hypothyroidism (SCH) on cardiac autonomic function using HRT parameters. METHODS The ...
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ژورنال
عنوان ژورنال: Medicine
سال: 2019
ISSN: 0025-7974,1536-5964
DOI: 10.1097/md.0000000000014140