scholarly journals Neural network analysis of heart rhythm variability for diagnosis of immobilization syndrome and objectivization of effectiveness of early rehabilitation

2020 ◽  
Vol 23 (1) ◽  
pp. 9-17
Author(s):  
Julia Yu. Nekrasova ◽  
D. S. Yankevich ◽  
М. М. Kanarsky ◽  
A. S. Markov
Keyword(s):  
Neural Network ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Intensive Care ◽  
Network Analysis ◽  
Heart Rhythm ◽  
Neural Network Analysis ◽  
Heart Rhythm Variability ◽  
Post Intensive Care Syndrome

The article discusses the use of a neural network analysis of heart rate variability for the diagnosis of immobilization syndrome and post-intensive care syndrome (PICS) in patients with disorders of consciousness for monitoring the quality of the rehabilitation process. It is shown that there are statistical differences between the curves characterizing the heart rate variability of healthy patients and patients with impaired consciousness. The use of a neural network allows to automatically evaluate the severity of the immobilization syndrome and Post Intensive Care Syndrome, as well as the effectiveness of measures for their prevention and the overall quality of the work of medical personnel.

scholarly journals Neural Network Analysis and Evaluation of the Fetal Heart Rate

Algorithms ◽  
2009 ◽  
Vol 2 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Yasuaki Noguchi ◽  
Fujihiko Matsumoto ◽  
Kazuo Maeda ◽  
Takashi Nagasawa
Keyword(s):  
Neural Network ◽  
Heart Rate ◽  
Network Analysis ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Neural Network Analysis ◽  
Analysis And Evaluation

scholarly journals Echocardiography indices, heart rate variability and cytokine profile in pregnant women

2009 ◽  
Vol 15 (5) ◽  
pp. 585-589
Author(s):  
O. A. Kashtalyan ◽  
M. S. Prystrom
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pregnant Women ◽  
Heart Rhythm ◽  
Holter Monitoring ◽  
Heart Rhythm Variability ◽  
Cytokine Balance ◽  
Plasma Cytokines ◽  
Subsequent Calculation ◽  
Index Ratio

Objective. To analyze heart rhythm variability, hemodinamics, pro- and anti-inflammatory plasma cytokines production in pregnant women. General clinical examination was carried out in both groups, echocardiography, Holter monitoring with subsequent calculation of generally accepted heart rate variability indices were performed. The circadian heart rate index (ratio day/night) was calculated. It was found that pregnancy-induced hypertension was accompanied by impaired cytokine balance. Altered immune homeostasis has been established to be a leading factor in the pattern of gestational complications.

scholarly journals ESTIMATION AND PROGNOSTIC VALUE OF THE PATIENTS SIMPATOVAGAL STATUS IN THE ACUTE PERIOD OF MYOCARDIAL INFARCT WITH ST SEGMENT ELEVATION

2019 ◽  
Vol 33 (4) ◽  
pp. 90-97
Author(s):  
V. E. Oleynikov ◽  
E. V. Dushina ◽  
M. V. Lukyanova ◽  
Yu. A. Barmenkova ◽  
I. Y. Moiseeva
Keyword(s):  
Myocardial Infarction ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Heart Rhythm ◽  
Heart Rhythm Variability ◽  
St Segment Elevation ◽  
Reactive Protein ◽  
Segment Elevation Myocardial Infarction ◽  
Normal Heart Rate ◽  
St Segment

The aimof the study was to analyze the impact of the status of cardiac autonomic nervous regulation on the fragmentation activity, development and progression of heart failure, and the long-term prognosis in patients with early ST segment elevation myocardial infarction.Material and Methods. The study included 143 subjects; 54 healthy volunteers were examined to identify normal values of heart rhythm variability parameters. The observation group comprised 89 patients with ST segment elevation myocardial infarction who underwent 24-hour ECG monitoring at day 7 to 9 as well as at 24 and 48 weeks with follow up assessment of heart rate variability and late ventricular potentials. At the time points, the levels of brain natriuretic peptide and highly sensitive C-reactive protein were determined. Patients underwent a 6-min walk test every 12 weeks. The development of repeated cardiovascular events has been monitored as an end-point. Patients were assigned to two groups according to results of heart rhythm variability analysis at day 7–9 after onset of ST segment elevation myocardial infarction: group 1 had normal heart rate variability; group 2 had increased sympathetic impact on rhythm.Results. In group 1, a pronounced regression of the brain natriuretic peptide level was registered 24 week after onset of ST segment elevation myocardial infarction. The value of C-reactive protein decreased in all groups. A favorable transformation of the indices reflecting the fragmentation activity — high-frequency low-amplitude and root mean square — of the myocardium was recorded only in the group with normal heart rate variability parameters. The risk of repeated cardiovascular events during 48 weeks after ST segment elevation myocardial infarction was significantly higher in the group with dominant sympathetic activity than in the group with normal status of the autonomic nervous system.Conclusion. Hypersympathicotonia in the acute period of ST segment elevation myocardial infarction was associated with an increased relative risk of repeated cardiac events and negatively affected the dynamics of laboratory parameters indicative of heart failure development and progression.

scholarly journals Heart rate variability in pregnant women with arterial hypertension

2011 ◽  
Vol 17 (4) ◽  
pp. 366-371
Author(s):  
L. L. Alexeeva ◽  
N. V. Protopopova ◽  
I. B. Fatkullina
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Arterial Hypertension ◽  
Pregnant Women ◽  
Heart Rhythm ◽  
First Trimester ◽  
Russian Population ◽  
Control Group ◽  
Heart Rhythm Variability ◽  
Sympathetic Regulation

Objective. To study heart rhythm variability (HRV) in ethnic groups of pregnant women with and without arterial hypertension during all gestation period. Design and methods. 100 pregnant Russian and Buryat women with arterial hypertension formed the main group. The control group included 100 healthy pregnant women with a normal current of pregnancy, without arterial hypertensions. All subjects underwent Holter ECG monitoring («Incart», «Kardiotechnika-04-BP-3», Russia). Results. There is a significant decrease in time parameters of rhythm variability n pregnant Buryat women with arterial hypertension in the second trimester. In the third trimester of pregnancy heart rhythm variability is higher in hypertensive women compared to those without hypertension. In Russian population indicators of heart rate variability do not vary during the day. In an ethnic group of women with arterial hypertension an increase of indicators of low and high frequencies due to the prevalence of vascular sympathetic regulation is observed in the first trimester of pregnancy. Conclusions. Pregnant women of the Buryat population with arterial hypertension have lower heart rhythm variability in the first and second trimesters of pregnancy. In Russian population the variability parameters do not change.

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