scholarly journals SPECIFICS OF HEART RATE VARIABILITY AND PARAMETERS OF ELECTROENCEPHALOGRAPHY IN PATIENTS WITH ARTERIAL HYPERTENSION

2014 ◽  
Vol 13 (6) ◽  
pp. 12-17
Author(s):  
M. Kh. Kurdanova ◽  
M. A. Umetov ◽  
I. A. Beslaneev ◽  
L. M. Batyrbekova ◽  
Kh. A. Kurdanov
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Arterial Hypertension ◽  
Healthy Volunteers ◽  
Clinical Examination ◽  
Nonparametric Statistics ◽  
Bipolar Electrodes ◽  
Frequency Field ◽  
The Brain ◽  
Parametric And Nonparametric Statistics

Aim. Investigation of heart rate variability parameters (HRV), α- & β-rhythms of electroencephalography (EEG) and their interrelations in patients with arterial hypertension (AH).Material and methods. Totally 55 persons studied at the age 35-64 y.o. – 35 pts. with AH 2 stage and 20 healthy volunteers. All patients underwent clinical examination, including HRV and EEG. The HRVs were determined in frequency field of shared specter (SS) — VLF, LF, HF and static values – dynamic digits SDNN, SDANN and CV etc. EEG was done at 21-lead pattern with mono- and bipolar electrodes. The data obtained was processed by the parametric and nonparametric statistics software.Results. HRV parameters — SS, VLF, LF and SNDD were significantly decreased in the group of AH patients. Among HRV parameters (TP, VLF, LF, HF) and frequency and amplitude EEG values were found correlational linkages more prominent in AH patients.Conclusion. The data obtained witnesses close interconnections and relationships of HRV, bioelectricity of the brain and hemodynamic in patients with AH. 

scholarly journals An Electro-Optical Method for Differential Diagnosis of Pathologies of Blood Supply to the Brain

Biomeditsina ◽  
2021 ◽  
Vol 17 (3) ◽  
pp. 68-73
Author(s):  
A. A. Nikolaev ◽  
N. N. Karkischenko ◽  
Yu. A. Chudina ◽  
D. B. Chaivanov ◽  
A. A. Vartanov
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Volunteers ◽  
Blood Vessels ◽  
Blood Supply ◽  
Experimental Studies ◽  
Significance Level ◽  
Cerebral Blood Supply ◽  
Simplified Method ◽  
The Brain

This work is devoted to the development of a new simplified method for express diagnostics of cerebral blood supply disorders of a vertebrogenic and non-vertebral nature based on electrocardiogram and photoplethysmogram data. The research was conducted using the example of vertebral artery syndrome in osteochondrosis of the cervical spine and somatoform dysfunction of the autonomic nervous system, respectively. Several experimental studies into the dynamics of heart rate variability and differential indicators of the coordinated work of the heart and blood vessels were carried out according to the data of electrocardiography and photoplethysmography. Three experimental groups included healthy volunteers and volunteers with cerebral blood supply disorders connected with either the loss of plasticity and narrowing of brain blood vessels or their mechanical squeezing. According to the research results, statistically significant (with a significance level of less than 0.05) differences by a number of indicators were revealed between the experimental groups. A conventional discriminant analysis of the indicators of the coordinated work of the heart and blood vessels was carried out for all experimental groups in order to determine criteria for differentiating people with vertebrogenic disorders, non-vertebral disorders and healthy volunteers. It is concluded that three variables can be used for such differentiation, each of which describes the coordinated work of the heart and blood vessels in a specific way.

The association between heart rate variability and biatrial phasic function in arterial hypertension

2014 ◽  
Vol 8 (10) ◽  
pp. 699-708 ◽  
Author(s):  
Marijana Tadic ◽  
Cesare Cuspidi ◽  
Biljana Pencic ◽  
Tamara Marjanovic ◽  
Vera Celic
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Arterial Hypertension

Leptinemia, parameters of heart rate variability, and prognosis in patients with essential arterial hypertension with obesity

2014 ◽  
Vol 18 (4 (72)) ◽  
Author(s):  
O. Radchenko ◽  
N. Bek ◽  
V. Potapov
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Essential Hypertension ◽  
Arterial Hypertension ◽  
Cardiovascular Events ◽  
Serum Leptin ◽  
Ventricular Systole ◽  
Essential Arterial Hypertension

An examination of 103 patients with essential hypertension and obesity showed the dependence of autonomic cardioregulation, electrical ventricular systole, and prediction of adverse cardiovascular events on the serum leptin concentration (hyper-, normo – or hypoleptinemia).

Abstract P315: Increase in Stress May Contribute to Lower Heart Rate Variability in Healthy Young Subjects

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Amanda C Costa ◽  
Ana Gabriela C Silva ◽  
Cibele T Ribeiro ◽  
Guilherme A Fregonezi ◽  
Fernando A Dias
Keyword(s):  
Cardiovascular Disease ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Volunteers ◽  
Perceived Stress ◽  
Low Frequency ◽  
Statistical Correlation ◽  
Total Power ◽  
The Impact ◽  
Nonparametric Correlation

Background: Stress is one of the risk factors for cardiovascular disease and decreased heart rate variability is associated to increased mortality in some cardiac diseases. The aim of the study was to assess the impact of perceived stress on cardiac autonomic regulation in young healthy volunteers. Methods: 35 young healthy volunteers (19 to 29 years old, 6 men) from a Brazilian population were assessed for perceived stress by the translated and validated Perceived Stress Scale (PSS, 14 questions) and had the R-R intervals recorded at rest on supine position (POLAR RS800CX) and analyzed (5 minutes, Kubius HRV software) by Fast-Fourier Transform for quantification of Heart Rate Variability (HRV). Results: Average data (±SD) for age, heart rate, BMI, waist circumference and percentage of body fat (%BF) were: 21.3±2.7 years; 65.5±7.9 bpm; 22.3±1.9 Kg/m 2 ; 76.0±6.1 cm and 32.1±6.6%; respectively. The mean score for the PSS-14 was 23.5±7.2 and for the HRV parameter as follow: SSDN=54.8±21.2ms; rMSSD=55.9±32.2ms; low-frequency (LF)= 794.8±579.7ms 2 ; High-frequency (HF)= 1508.0±1783.0 ms 2 ; LF(n.u.)= 41.1±16.2; HF(n.u.)= 58.9±16.2; LF/HF=0.89±0.80 and Total power (TP)= 3151±2570ms 2 . Spearman nonparametric correlation was calculated and there was a significant correlation of PSS-14 scores and LF (ms 2 ) (r=−0.343; p= 0.044). Other HRV variables did not shown significant correlation but also had negative values for Spearman r (TP r=−0.265, p=0.124; HF r=−0.158; SSDN r=−0.207; rMSSD r=−0.243, p=0.160). LF/HF and LF(n.u.) did not correlate to PSS-14 having Spearman r very close to zero (LF/HF r=−0.007, p=0.969; LF(n.u.) r=−0.005, p=0.976). No correlation was found for HRV parameters and BMI and there was a trend for statistical correlation of %BF and LF (ms 2 ) (r=−0.309, p=0.071). Conclusions: These data demonstrate a possible association of perceived stress level and HRV at rest. Changes in LF can be a consequence of both sympathetic and parasympathetic activity, however, analyzing the other variables HF, TP, SSDN and rMSSD (all negative Spearman r) and due to the lack of changes in LF/HF ratio and LF(n.u.) we interpret that increased stress may be associated to decrease in overall heart rate variability. These changes were seen in healthy individuals and may point out an important mechanism in cardiovascular disease development.

Comparative study on effect of neutral spinal bath and neutral spinal spray on blood pressure, heart rate and heart rate variability in healthy volunteers

2018 ◽  
Vol 16 (2) ◽  
Author(s):  
Arundhati Goley ◽  
A. Mooventhan ◽  
NK. Manjunath
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Volunteers ◽  
Group Analysis ◽  
Low Frequency ◽  
Single Session ◽  
Arterial Blood ◽  
Before And After ◽  
Instantaneous Heart Rate

Abstract Background Hydrotherapeutic applications to the head and spine have shown to improve cardiovascular and autonomic functions. There is lack of study reporting the effect of either neutral spinal bath (NSB) or neutral spinal spray (NSS). Hence, the present study was conducted to evaluate and compare the effects of both NSB and NSS in healthy volunteers. Methods Thirty healthy subjects were recruited and randomized into either neutral spinal bath group (NSBG) or neutral spinal spray group (NSSG). A single session of NSB, NSS was given for 15 min to the NSBG and NSSG, respectively. Assessments were taken before and after the interventions. Results Results of this study showed a significant reduction in low-frequency (LF) to high-frequency (HF) (LF/HF) ratio of heart rate variability (HRV) spectrum in NSBG compared with NSSG (p=0.026). Within-group analysis of both NSBG and NSSG showed a significant increase in the mean of the intervals between adjacent QRS complexes or the instantaneous heart rate (HR) (RRI) (p=0.002; p=0.009, respectively), along with a significant reduction in HR (p=0.002; p=0.004, respectively). But, a significant reduction in systolic blood pressure (SBP) (p=0.037) and pulse pressure (PP) (p=0.017) was observed in NSSG, while a significant reduction in diastolic blood pressure (DBP) (p=0.008), mean arterial blood pressure (MAP) (p=0.008) and LF/HF ratio (p=0.041) was observed in NSBG. Conclusion Results of the study suggest that 15 min of both NSB and NSS might be effective in reducing HR and improving HRV. However, NSS is particularly effective in reducing SBP and PP, while NSB is particularly effective in reducing DBP and MAP along with improving sympathovagal balance in healthy volunteers.

A Case Report on Heart Rate Variability Biofeedback and Postconcussion Syndrome: Healing the Autonomic Nervous System

Biofeedback ◽  
2021 ◽  
Vol 49 (4) ◽  
pp. 86-88
Author(s):  
Leah M. Lagos
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
High Amplitude ◽  
Regulatory Control ◽  
Control Mechanisms ◽  
Postconcussion Syndrome ◽  
Heart Rate Variability Biofeedback ◽  
The Mind ◽  
The Brain ◽  
Cardiovascular Functions

Postconcussion syndrome is a devastating condition of the mind, body, and even personality. Mounting research demonstrates that heart rate variability biofeedback can help the concussed individual in three critical ways: (a) eliciting high amplitude oscillations in cardiovascular functions and thereby strengthening self-regulatory control mechanisms; (b) restoring autonomic balance; and (c) increasing the afferent impulse stream from the baroreceptors to restore balance between inhibitory and excitatory processes in the brain.

scholarly journals Heart rate variability, the dynamic nature of the retinal microvasculature and cardiac stress: providing insight into the brain–retina–heart link: the SABPA study

Eye ◽  
2019 ◽  
Vol 34 (5) ◽  
pp. 835-846
Author(s):  
Annemarie Wentzel ◽  
Leoné Malan ◽  
Roland von Känel ◽  
Wayne Smith ◽  
Nicolaas T. Malan
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dynamic Nature ◽  
Cardiac Stress ◽  
Retinal Microvasculature ◽  
The Brain ◽  
Insight Into
Sign in / Sign up

Export Citation Format

Share Document