Saratov JOURNAL of Medical and Scientific Research

heart rate variability

Assessment of system's adaptive reserves by indicators of heart rate variability in young men at the initial stages of university education

Year: 2019, volume 15 Issue: №3 Pages: 796-800
Heading: Cardiology Article type: Original article
Authors: Olenko E.S., Fomina Е.М., Kirichuk V.F., Kodochigova A.l., Yupatov V.D., Konovalova A.A.
Organization: Saratov State Medical University
Summary:

The purpose of the study is to assess the activity index of regulatory systems and mechanisms of neurohumoral regulation of heart activity in healthy young men at the initial stage of university education. Material and Methods. We studied the activity index of regulatory systems (PARS) and features of the mechanisms of neurohumoral regulation of cardiac activity on a sample of 150 young men [19.0 (18.0; 19.0) years old], based on the analysis of heart rate variability. Results. 40.0% (n=60) of young men had a satisfactory state of adaptive reserves of the body, 23.3% (n=35) were in a state of low functional stress, 24.7% (n=37) had poor adaptation, and 12.0% (n=18) failed to adapt. Conclusion. In male students with satisfactory, tense, and unsatisfactory adaptation, as disadaptation increases, the total effect of all levels of regulation on the heart rate increases with an increase in the effect on the cardiac activity of the parasym-pathetic division of the ANS and a decrease in the activity of cerebral subcortical structures responsible for adaptation, against the background of an increase in psychoemotional stress. In healthy male students, the disruption of systems' adaptive reserves is often accompanied by the total decrease in all levels of regulation with a predominance of sympathetic influences on the heart rhythm and is less frequently associated with a sharp increase in all levels of regulation and the predominance of parasympathetic division of the ANS for the CVS.

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Comparative evaluation of autonomic regulation of circulation in patients undergone coronary artery bypass grafting or correction of acquired valvular heart disease

Year: 2018, volume 14 Issue: №1 Pages: 45-49
Heading: Internal Diseases Article type: Short message
Authors: Kiselev A.R., Vulf K.A., Shvartz V.A., Karavaev A.S., Borovkova E.l., Bockeria O.L.
Organization: Bakulev Center of Cardiovascular Surgery, Saratov State Medical University n.a. V.I. Razumovsky Research Institute of Cardiology, Saratov state university
Summary:

The aim of the research was to study the peculiarities of vegetative regulation of blood circulation in cardiac surgery patients who underwent coronary artery bypass grafting (CABG) or correction of acquired valvular heart disease (CAVHD). Material and Methods. In this study we included 42 patients (12 women; 63 (57; 67) years), who underwent CABG, and 36 patients (16 women; 58 (47; 65) years) who underwent CAVHD. The synchronous 15 minutes records of electrocardiogram and photoplethysmogram (PPG) were performed in all patients before and after surgery. Time domain and frequency domain measures of heart rate variability (HRV) and index of synchronization between low-frequency (LF) oscillations in HRV and PPG (index S) were analyzed. Results. Most studied autonomic indices did not have statistically significant differences between patients with CABG and CAVHD in the study stages, except for heart rate, which was higher in patients before CAVHD (p=0,013). Conclusion. The values of HRV and index S do not depend on the difference in the clinical status and the features of performed cardiac surgical interventions between patients with CABG and CAVHD.

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The contemporary methods of patients with intraperitoneal bleeding of genital origin treatment objective efficacy assessment

Summary:

The aim of the article: the peculiarities of the modern methods of treatment efficiency objective assessment in considerable contingent of patients with intraperitoneal bleeding of a genital origin are investigated. Material et metods: The original data of intra- and postoperative medical interventions efficiency are given and analyzed in 78 patients who were operated laparoscopically owing to intraperitoneal bleedings up to 500 ml of blood. Results. Circulating blood volume in these patients was restituted by blood Autohaemoreinfusion together with donors' blood and blood-substituting compounds injection. Red blood cells and hemoglobin content together with heart rate variability indexes were taken as the markers of the patients' organism functional condition and rehabilitation efficacy estimation. One month after miniinvazive treatment in women with acute intraperitoneal blood loss above 500 ml one could see certain sympathetic activation with reciprocal parasympathetic activity suppression together with pertinent activation degree value normalization. Conclusions. The conclusion was made that HRV data analysis allows to make an objective estimation of women with acute genital intraperitoneal bleeding (above 500 ml) treatment efficacy. The last is very important in the prognostic aspect because there are few objective methods of afteroperational state analysis in patients with bleeding of different origin.

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Prognostic value of heart rhythm variability in patients with chronic heart failure (three-year investigation)

Year: 2011, volume 7 Issue: №4 Pages: 845-850
Heading: Internal Diseases Article type: Original article
Authors: Kosheleva N.A.
Organization: Saratov State Medical University
Summary:

Aim: to estimate prognostic value of indicators of heart rhythm variability (HRV) in patients with chronic heart failure (CHF) within three years. Materials and methods: A total of 110 patients aged 55,2±6,5 years with CHF experienced Q-wave myocardial infarction were enrolled in the study. Analysis of HRV measures was obtained by means of 5 minutes records of standing at rest. Results: Within three years of supervision of patients 50 cases of cardiovascular complications were developed: 22 cases presented CHF regeneration, 13 patients suffered recurrent myocardial infarctions, lethal outcome was observed in 15 cases. It was established that at level of low-frequency spectrum HRV less than 5,2 In ms2 decompensations CHF (p=0,048) and lethal outcome (p=0,02) were determined than at bigger value of this indicator. Independent predictors of lethal outcome in patients with CHF within three years included the left ventricle ejection fraction, uric acid, N-terminal fragment of cerebral natriuretic peptide and low-frequency spectrum HRV. Conclusions: The developed algorithm of estimation of individual risk of lethal outcome development in CHF patients within three years, will allow to improve tactics and prognosis in this category of patients

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Interdependence of parameters of varia-tional pulsometry, entropy of heart rate, temporal and spectral analyses of heart rate variability in normal state and in ischemic heart disease

Year: 2011, volume 7 Issue: №3 Pages: 607-611
Heading: Internal Diseases Article type: Original article
Authors: Durnova N.Yu., Dovgalevskiy Ya.P., Burlaka A.N., Kiselev A. R., Furman N.V.
Organization: Saratov Institute of Cardiology, Russia
Summary:

The research goal is to study the correlation between indices of variational pulsometry, entropy of heart rate, temporal and spectral analyses and heart rate variability in healthy patients and patients with coronary heart disease. Materials. Of the study are indicators of variational pulsometry and temporal and spectral analyses from 111 patients with coronary heart disease and in 61 healthy individuals. Results. Most parameters of HRV correlated with each other. In healthy patients the greatest independence was characterized by Mo and LF/HF, in patients with coronary artery disease — only by LF/HF Significant correlation with SDNN RMSSD, TP, LF, HF was determined. Conclusion. The variational pulsometry, temporal and spectral analyses of HRV and entropy of heart rate provide HRV assessment. The indices are interdependent and indicate interchangeability of methods

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Functional status assessment of adolescents with different forms of influence for performed offences

Year: 2010, volume 6 Issue: №4 Pages: 821-824
Heading: Sociology of Medicine Article type: Original article
Authors: Polovnikova А.А., Ponomarev S.B.
Organization: Izhevsk Scientific Research Institute of Federal Service of Penal System
Summary:

The purpose of the study was to compare the functional status of adolescents, depending on the measure of impact of the offense. The data received indicated lower functional status of convicted adolescents, especially those with para-suicide behavior. Adolescents who were used humane methods of punishment for committed offenses demonstrated changes in the cardiovascular and respiratory systems only in the form of significant increase of stress index, while other parameters remained normal. The role of physical exercise in the correction of violations was under the study

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Heart rate variability in patients with chronic cerebral ischemia

Year: 2010, volume 6 Issue: №4 Pages: 800-803
Heading: Neurology Article type: Original article
Authors: Smyshlaeva О.М.
Organization: Igevsk State Medical Academy
Summary:

The purpose of the work is to estimate the status of autonomic nervous system in patients with chronic cerebral ischemia by means of the analysis of heart rate variability at various stages of disease. 120 patients with chronic cerebral ischemia aged from 45 to 65 took part in the research. The comparison group included 30 patients with an arterial hypertension and without chronic cerebral ischemia. Heart rate variability analisis included time-domain and frequency-domain methods of five-minute sequence of the electrocardiographic intervals registered in at rest and in or-thostatic probe. The results of research have shown, that autonomic disorders with prevalence of sympathetic nervous system accompany initial implications of chronic cerebral ischemia. The second stage of disease is characterized by depression of activity of both autonomic, and central regulation. The expressed depression of autonomic maintenance of regulation of heart rhythm of both from sympathetic, and from parasympathetic nervous system was observed at the third stage of chronic cerebral ischemia

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Heart rate variability, structural and functional characteristics of the left ventricle in essential arterial hypertension

Year: 2010, volume 6 Issue: №3 Pages: 600-605
Heading: Internal Diseases Article type: Original article
Authors: Khromtsova О.М.
Organization: Uralsk State Medical Academy
Summary:

For the purpose of diagnostic and treatment improvement it is necessary to investigate relationship between different pathogenetic mechanisms in essential hypertension. The aim of our study was the comparative analysis of the parameters of cardiac remodeling and neurohumoral mechanisms of heart rate variability (HRV) in patients with essential arterial hypertension. 100 patients with essential arterial hypertension were included in the study. All patients went through heart rate variability parameters and left ventricle characteristics evaluation. Time and frequency domains were decreased in patients with arterial hypertension. Excess sympathetic activation takes place, parasympathetic system is depressed and it shows pathogenetic basis of disadaptation. Left ventricle hypertrophy is associated with progressive decrease of HRV and its circadian fluctuations. Concentric left ventricle hypertrophy is characterized by the most significant decrease in time and frequency domains of HRV. 1/3 of hypertensive patients with normal left ventricle geometry have diastolic dysfunction and also some decrease in time and frequency domains. In conclusion, we found that cardiac remodeling in patients with essential hypertension seems to be related to the severity of impairment of cardiac autonomic control

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