Pub Date : 2018-06-13DOI: 10.15275/CARDIOIT.2018.0101
V. Khorev, Yurii M. Ishbulatov, A. Karavaev, Y. Popova, A. Kiselev, B. Bezruchko
We study the effect of noise on the properties of the directional coupling estimation with the method of phase dynamics modeling. We carry out the analysis on time series of the previously proposed mathematical model of the human cardiovascular system. Directed coupling estimations are analyzed via instantaneous phases modelling of the 0.1 Hz oscillations in heart rate variability and photoplethysmogram, reflecting the activity of the subsystems regulating blood circulation, at various levels of phase noise. The results of the analysis of the model signals are compared with the results of the analysis of experimental signals.
{"title":"Influence of phase noise on coupling diagnostics by the method of phase dynamics modelling using time series of the mathematical model of cardiovascular system","authors":"V. Khorev, Yurii M. Ishbulatov, A. Karavaev, Y. Popova, A. Kiselev, B. Bezruchko","doi":"10.15275/CARDIOIT.2018.0101","DOIUrl":"https://doi.org/10.15275/CARDIOIT.2018.0101","url":null,"abstract":"We study the effect of noise on the properties of the directional coupling estimation with the method of phase dynamics modeling. We carry out the analysis on time series of the previously proposed mathematical model of the human cardiovascular system. Directed coupling estimations are analyzed via instantaneous phases modelling of the 0.1 Hz oscillations in heart rate variability and photoplethysmogram, reflecting the activity of the subsystems regulating blood circulation, at various levels of phase noise. The results of the analysis of the model signals are compared with the results of the analysis of experimental signals.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132656039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-13DOI: 10.15275/cardioit.2018.0102
K. A. Vulf, A. Kiselev
{"title":"Clustering patients who have undergone coronary artery bypass surgery or correction of acquired valvular heart defects, based on the indicators of the autonomic regulation of the cardiovascular system","authors":"K. A. Vulf, A. Kiselev","doi":"10.15275/cardioit.2018.0102","DOIUrl":"https://doi.org/10.15275/cardioit.2018.0102","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130683871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-22DOI: 10.15275/cardioit.2017.0203
V. Skazkina, Yurii M. Ishbulatov, A. Kiselev
{"title":"Investigation of the correlation between high- and low-frequency oscillations isolated from cardiointervalograms and photoplethysmograms","authors":"V. Skazkina, Yurii M. Ishbulatov, A. Kiselev","doi":"10.15275/cardioit.2017.0203","DOIUrl":"https://doi.org/10.15275/cardioit.2017.0203","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133605395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-22DOI: 10.15275/CARDIOIT.2017.0204
Anastasia V. Plutalova
{"title":"Gender peculiarities of the connectivity of low-frequency oscillations in cardiovascular autonomic regulation in patients with old myocardial infarction","authors":"Anastasia V. Plutalova","doi":"10.15275/CARDIOIT.2017.0204","DOIUrl":"https://doi.org/10.15275/CARDIOIT.2017.0204","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"330 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132782983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-22DOI: 10.15275/CARDIOIT.2017.0202
Elya A. Manafova, K. A. Vulf
{"title":"Capturing phases of oscillations of chronotropic sympathetic regulations of the heart and arterial tone in an active experiment on healthy subjects","authors":"Elya A. Manafova, K. A. Vulf","doi":"10.15275/CARDIOIT.2017.0202","DOIUrl":"https://doi.org/10.15275/CARDIOIT.2017.0202","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129149247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-22DOI: 10.15275/cardioit.2017.0201
Y. Kuznetsova
The aim of this study was to study the features of interaction between low-frequency (LF) contours of vegetative regulation of blood circulation in patients with arterial hypertension (AH) and in healthy individuals. Material and Methods — This study included 127 synchronous records of cardiointervalograms and photoplethysmograms from patients with AH (aged 39-55 years) and 40 records from healthy subjects (aged 20-40 years). Synchronization of the LF rhythms was estimated by calculating the total percentage of phase synchronization, the phase increment correlation, the prediction error, and the phase coherence index. Results — It is revealed that the average values of time delays in communication between studied contours are somewhat lower in healthy people than in patients with AH. At the same time, the strength of this interaction is approximately similar in both studied groups. Conclusion — Patients with AH are characterized by a greater delay in the relationship between LF rhythms in regulation of heart rate and peripheral blood flow, relatively healthy individuals.
{"title":"Evaluation of the time delay in connection between low-frequency circuits of autonomic regulation of blood circulation in patients with arterial hypertension","authors":"Y. Kuznetsova","doi":"10.15275/cardioit.2017.0201","DOIUrl":"https://doi.org/10.15275/cardioit.2017.0201","url":null,"abstract":"The aim of this study was to study the features of interaction between low-frequency (LF) contours of vegetative regulation of blood circulation in patients with arterial hypertension (AH) and in healthy individuals. Material and Methods — This study included 127 synchronous records of cardiointervalograms and photoplethysmograms from patients with AH (aged 39-55 years) and 40 records from healthy subjects (aged 20-40 years). Synchronization of the LF rhythms was estimated by calculating the total percentage of phase synchronization, the phase increment correlation, the prediction error, and the phase coherence index. Results — It is revealed that the average values of time delays in communication between studied contours are somewhat lower in healthy people than in patients with AH. At the same time, the strength of this interaction is approximately similar in both studied groups. Conclusion — Patients with AH are characterized by a greater delay in the relationship between LF rhythms in regulation of heart rate and peripheral blood flow, relatively healthy individuals.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128077161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-01DOI: 10.15275/cardioit.2016.0401
O. Kotsoeva
{"title":"Place of surgical methods in the structure of organizational-and-technological model of medical care delivered to patients with chronic heart failure","authors":"O. Kotsoeva","doi":"10.15275/cardioit.2016.0401","DOIUrl":"https://doi.org/10.15275/cardioit.2016.0401","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127443575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-09-25DOI: 10.15275/CARDIOIT.2016.0303
A. S. Korotin, A. Kiselev
The article consecrates clinical quality indicators for patients with chronic heart failure. Indicators are developed on the basis of clinical guidelines for audit of health care quality in medical practice. Definitions and algorithms of calculation for each indicator are given.
{"title":"System of clinical indicators for patients with chronic heart failure","authors":"A. S. Korotin, A. Kiselev","doi":"10.15275/CARDIOIT.2016.0303","DOIUrl":"https://doi.org/10.15275/CARDIOIT.2016.0303","url":null,"abstract":"The article consecrates clinical quality indicators for patients with chronic heart failure. Indicators are developed on the basis of clinical guidelines for audit of health care quality in medical practice. Definitions and algorithms of calculation for each indicator are given.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122847691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-09-25DOI: 10.15275/cardioit.2016.0301
O. Posnenkova, S. N. Gerasimov
An article reviews the current measures for assessment the quality of treatment in patients with essential hypertension. The system of indicators intended for clinical audit of hypertension diagnosis and treatment process in primary care is presented. For each indicator definition and estimation procedure is given.
{"title":"The system of clinical indicators for patients with essential hypertension","authors":"O. Posnenkova, S. N. Gerasimov","doi":"10.15275/cardioit.2016.0301","DOIUrl":"https://doi.org/10.15275/cardioit.2016.0301","url":null,"abstract":"An article reviews the current measures for assessment the quality of treatment in patients with essential hypertension. The system of indicators intended for clinical audit of hypertension diagnosis and treatment process in primary care is presented. For each indicator definition and estimation procedure is given.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127314572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-09-25DOI: 10.15275/CARDIOIT.2016.0302
E. Genkal, A. S. Korotin, O. Posnenkova, A. Kiselev
The article describes a system of clinical quality indicators for patients with stable coronary artery disease. Indicators are developed on the basis of clinical guidelines for audit of health care quality in primary care. Definitions and algorithms of calculation for each indicator are given.
{"title":"System of clinical indicators for patients with chronic coronary artery disease","authors":"E. Genkal, A. S. Korotin, O. Posnenkova, A. Kiselev","doi":"10.15275/CARDIOIT.2016.0302","DOIUrl":"https://doi.org/10.15275/CARDIOIT.2016.0302","url":null,"abstract":"The article describes a system of clinical quality indicators for patients with stable coronary artery disease. Indicators are developed on the basis of clinical guidelines for audit of health care quality in primary care. Definitions and algorithms of calculation for each indicator are given.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129549809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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