ELECTROCARDIOGRAM INDICATORS IN 7 YEAR OLDS LIVING IN THE CONDITIONS OF THE MIDDLE PRIOBIY

2021 ◽  
Vol 100 (5) ◽  
pp. 199-202
Author(s):  
O.G. Litovchenko ◽  
◽  
E.N. Saitova ◽  
Keyword(s):  
Heart Rate ◽  
Comparative Analysis ◽  
Gender Identity ◽  
River Basin ◽  
Sinus Tachycardia ◽  
Northern Region ◽  
Educational Institutions ◽  
Ob River ◽  
Study Participants ◽  
Electrocardiogram Ecg

The aim of the study is to determine the features of time and amplitude indicators of the electrocardiogram (ECG) in 7 years olds, born and living in the Northern region. Materials and methods of research: 252 7-year-old children from various educational institutions of Surgut were examined. Time and amplitude indicators of the ECG, the position of the electrical axis of the heart (EAH) were determined in 12 standard leads, the comparative analysis of the ECG indicators was carried out by gender identity. Results: all study participants had a sinus heart rate. Dysfunctions of cardiac automatism in the form of sinus tachycardia and bradycardia were found in 52,8% of 7-year-old children living in the Middle Ob river basin. A deviation of the QRS wave for more than 90 ms in 28,5% of the examined children was revealed.

scholarly journals Geoinformation-Cartographic Analysis of Different Monitoring Data on Flooding and Underflooding Zones

2021 ◽  
Vol 36 ◽  
pp. 45-62
Author(s):  
N.Yu. Kurepina ◽  
◽  
I.D. Rybkina ◽  
Keyword(s):  
Comparative Analysis ◽  
River Basin ◽  
Temporal Variability ◽  
River Basins ◽  
Monitoring Data ◽  
Data Series ◽  
Ob River ◽  
The Future ◽  
Emergency Events ◽  
The Republic

In the Upper Ob river basin, emergency events (EE) are mainly associated with flooding and underflooding of settlements and economic facilities. Using the landscape-basin approach and geoinformation-cartographic method, we analyzed different monitoring data on flooding and flooding zones within the boundaries of five regions (the Republic of Altai, Altai Krai, Kemerovo, Novosibirsk and Tomsk oblasts) for the 25-year period. Spatial-temporal variability of data series was studied and most flood-prone river basins as well as physical and geographical zoning units were defined. A comparative analysis of two periods (1993-2002 and 2004-2018) was performed, trends in emergency occurrence were revealed, and the findings were presented in a cartographic format. The established general patterns of emergency manifestation can be used to identify the causes of occurring processes. In the future, it will allow to forecast emergency events and minimize probable damage to population and economy.

scholarly journals INDICATORS OF HEART RATE VARIABILITY IN CHILDREN FROM SURGUT

2019 ◽  
Vol 19 (2) ◽  
pp. 14-19
Author(s):  
O Litovchenko ◽  
E Saitova
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Comparative Analysis ◽  
Time Domain ◽  
First Graders ◽  
Educational Institutions ◽  
Similar Data ◽  
Rate Regulation ◽  
Heart Rate Regulation

Aim. The article deals with establishing the features of the cardiovascular system by using HRV indicators in first graders from Surgut. Materials and methods. We examined 252 first-graders from various educational institutions in Surgut. The features of autonomic heart rate regulation were studied by using time-domain and spectral analysis. We also conducted a comparative analysis of indicators depending on gender. Results. We did not reveal any significant differences in heart rate variability parameters of boys and girls from Surgut. These data were compared with the similar data of first-graders from Moscow obtained in 2016. Conclusion. First-graders from Surgut had a balance of sympathetic and parasympathetic influence in heart rate regulation.

Analysis of the quality of early diagnostics of cardiovascular diseases in students of educational institutions of Khabarovsk (according to the data of preventive examinations)

2020 ◽  
pp. 13-16
Keyword(s):  
Blood Pressure ◽  
Cardiovascular Diseases ◽  
Sinus Tachycardia ◽  
Blood Pressure Level ◽  
Educational Institutions ◽  
Conduction Disturbances ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

To identify the prevalence of early pathology of cardiovascular diseases, a survey of 400 200 girls) in the age group 15 and 17 years old was conducted as a part of routine medical of the level of blood pressure (BP) was carried out, with the calculation of the average level pressure on the basis of three separate measurements estimated by percentile tables for a registration of a standard resting ECG in 12 leads. According to the results of the survey, into 3 groups: with an increase in blood pressure above 95 ‰ (group 1 – 16 people), which recorded in males (p<0,05); Group 2 (67 people) – adolescents with a normal blood pressure level and group 3 of adolescents with a decrease in blood pressure below 5 ‰ changes in the form of rhythm and conduction disturbances were noted in almost every a predominance of sinus tachycardia in the first group. In the third group of adolescents, form of ectopic rhythm and pacemaker migration were significantly more frequently only 78 % of adolescents were referred for consultation and in-depth examination by a pediatric cardiologist.

scholarly journals Differential effects of the blood pressure state on pulse rate variability and heart rate variability in critically ill patients

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Elisa Mejía-Mejía ◽  
James M. May ◽  
Mohamed Elgendi ◽  
Panayiotis A. Kyriacou
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Pulse Rate ◽  
Pulse Transit Time ◽  
Pulse Rate Variability ◽  
Physiological Factors ◽  
Ecg Signals ◽  
Non Invasive ◽  
Electrocardiogram Ecg

AbstractHeart rate variability (HRV) utilizes the electrocardiogram (ECG) and has been widely studied as a non-invasive indicator of cardiac autonomic activity. Pulse rate variability (PRV) utilizes photoplethysmography (PPG) and recently has been used as a surrogate for HRV. Several studies have found that PRV is not entirely valid as an estimation of HRV and that several physiological factors, including the pulse transit time (PTT) and blood pressure (BP) changes, may affect PRV differently than HRV. This study aimed to assess the relationship between PRV and HRV under different BP states: hypotension, normotension, and hypertension. Using the MIMIC III database, 5 min segments of PPG and ECG signals were used to extract PRV and HRV, respectively. Several time-domain, frequency-domain, and nonlinear indices were obtained from these signals. Bland–Altman analysis, correlation analysis, and Friedman rank sum tests were used to compare HRV and PRV in each state, and PRV and HRV indices were compared among BP states using Kruskal–Wallis tests. The findings indicated that there were differences between PRV and HRV, especially in short-term and nonlinear indices, and although PRV and HRV were altered in a similar manner when there was a change in BP, PRV seemed to be more sensitive to these changes.

scholarly journals β1-blocker in sepsis

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Daisuke Hasegawa ◽  
Ryota Sato ◽  
Osamu Nishida
Keyword(s):  
Heart Rate ◽  
Oxygen Delivery ◽  
Sinus Tachycardia ◽  
Meta Analysis ◽  
Lactate Production ◽  
Volume Index ◽  
Initial Resuscitation ◽  
Randomized Controlled ◽  
Metabolic Systems

Abstract Background The use of ultrashort-acting β1-blockers recently has attracted attention in septic patients with non-compensatory tachycardia. We summarized the metabolic and hemodynamic effects and the clinical evidence of ultrashort-acting β1-blockers. Main body A recent meta-analysis showed that ultrashort-acting β1-blockers reduced the mortality in septic patients with persistent tachycardia. However, its mechanism to improve mortality is not fully understood yet. We often use lactate as a marker of oxygen delivery, but an impaired oxygen use rather than reduced oxygen delivery has been recently proposed as a more reasonable explanation of hyperlactatemia in patients with sepsis, leading to a question of whether β1-blockers affect metabolic systems. While the stimulation of the β2-receptor accelerates glycolysis and lactate production, the role of β1-blocker in lactate production remains unclear and studies investigating the role of β1-blockers in lactate kinetics are warranted. A meta-analysis also reported that ultrashort-acting β1-blockers increased stroke volume index, while it reduced heart rate, resulting in unchanged cardiac index, mean arterial pressure, and norepinephrine requirement at 24 h, leading to an improvement of cardiovascular efficiency. On the other hand, a recent study reported that heart rate reduction using fast esmolol titration in the very early phase of septic shock caused hemodynamic instability, suggesting that ultrashort-acting β1-blockers should be started only after completing initial resuscitation. While many clinicians still do not feel comfortable controlling sinus tachycardia, one randomized controlled trial in which the majority had sinus tachycardia suggested the mortality benefit of ultrashort-acting β1-blockers. Therefore, it still deems to be reasonable to control sinus tachycardia with ultrashort-acting β1-blockers after completing initial resuscitation. Conclusion Accumulating evidence is supporting the use of ultrashort-acting β1-blockers while larger randomized controlled trials to clarify the effect of ultrashort-acting β1-blockers are still warranted.

scholarly journals A Trigonometric Projection Method for Overcoming High Intensity Heart Rate Caused Waveform Deformation in Electrocardiogram Biometrics

2021 ◽  
Author(s):  
Tsu-Wang Shen ◽  
Shan-Chun Chang
Keyword(s):  
Heart Rate ◽  
High Intensity ◽  
Correlation Coefficients ◽  
Calibration Method ◽  
Mean Square ◽  
Biometric Technology ◽  
Overall Performance ◽  
Electrocardiogram Signal ◽  
Mean Square Difference ◽  
Electrocardiogram Ecg

Abstract Purpose Although electrocardiogram (ECG) has been proven as a biometric for human identification, applying biometric technology remains challenging with diverse heart rate circumstances in which high intensity heart rate caused waveform deformation may not be known in advance when ECG templates are registered. Methods A calibration method that calculates the ratio of the length of an unidentified electrocardiogram signal to the length of an electrocardiogram template is proposed in this paper. Next, the R peak is used as an axis anchor point of a trigonometric projection (TP) to attain the displacement value. Finally, the unidentified ECG signal is calibrated according to the generated trigonometric value, which corresponds to the trigonometric projection degree of the ratio and the attained displacement measurement. Results The results reveal that the proposed method provides superior overall performance compared with that of the conventional downsampling method, based on the percentage root mean square difference (PRD), correlation coefficients, and mean square error (MSE). Conclusion The curve fitting equation directly maps from the heart rate levels to the TP degree without prior registration information. The proposed ECG calibration method offers a more robust system against heart rate interference when conducting ECG identification.

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