Cardio-IT最新文献

{"title":"Spectral analysis of signals of autonomic regulation of blood circulation in patients with COVID-19 and arterial hypertension","authors":"V. Skazkina, K. Popov, N. Krasikova","doi":"10.15275/cardioit.2021.0201","DOIUrl":"https://doi.org/10.15275/cardioit.2021.0201","url":null,"abstract":"The work aims to carry out a comparative analysis of the spectral indices of the photoplethysmogram signals and RR-intervals of healthy volunteers, patients with COVID-19, as well as patients with COVID-19 and chronic arterial hypertension of 1-2 degrees. The study included 45 records of pairs of electrocardiogram and photoplethysmogram signals. Each sample included 15 pairs of 20-minute experimental signals. The study revealed an increase in the integrated power of the low-frequency (LF) band over the integrated power of the high-frequency (HF) band in the photoplethysmogram signals in patients with COVID-19, burdened with hypertension. In the signals of the RR-intervals, the largest values of the ratio of the LF to HF indices are associated with patients without cardiovascular diseases. In turn, this may be an indicator of the different effects of viral infection and arterial hypertension on the loops of autonomic control of heart rate and vascular tone.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116123056","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}

{"title":"Missing value imputation with linear methods in the database of cardiological patients in prediction of mortality","authors":"Tatiana S. Bibicheva, V. Skazkina, Marina V. Ogneva, M. Simonyan, V. Gridnev, A. Karavaev","doi":"10.15275/cardioit.2021.0101","DOIUrl":"https://doi.org/10.15275/cardioit.2021.0101","url":null,"abstract":"This study examines missing value imputation in the Russian Acute Coronary Syndrome Registry (RusACSR) and assessment of the probability of predicting mortality. Linear methods with the most probable or average value were used for imputation. The prediction problem was solved using the k-nearest neighbors method. This work reveals that the imputation method, despite their simplicity, increases the probability of prediction of mortality by 6%.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114192108","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}

{"title":"Capabilities of photoplethysmography as a method for screening of cardiovascular system pathology","authors":"M. Simonyan, O. Posnenkova, A. Kiselev","doi":"10.15275/cardioit.2020.0102","DOIUrl":"https://doi.org/10.15275/cardioit.2020.0102","url":null,"abstract":"Currently, vegetative dysfunction considered to be one of principal mechanisms in the pathogenesis of cardiovascular pathology, which causes a cascade of events leading to changes in the properties and a structure of vascular wall. This review article contains literature from various databases (Russian science citation index, PubMed, Google Shcolar, Scopus). It presents the methods for assessing vegetative imbalance. In particular, the method of photoplethysmography (PPGV) is considered for recording periodic fluctuations at various frequencies in the distal vascular bed which characterize physiological processes (cardiac activity, respiratory influences, neurogenic, myogenic and endothelial activity). In addition, other diagnostic capabilities of PPGV such as heart rate (HR) assessment, determining the properties of vascular wall and the level of blood saturation are elucidated. This paper demonstrates a wide range of PPGV applications. The simplicity of PPGV reproduction and its cost-effectiveness make it feasible both in routine clinical practice for the purposes of screening for cardiovascular pathology, and for individual health monitoring incorporated in smart devices.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132647443","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}

{"title":"Effect of angiotensin/neprilysin inhibition on ventricular repolarization and clinical arrhythmogenesis","authors":"S. Gul, O. C. Yontar, M. Yenerçağ, Onur Seker, Güney Erdoğan, U. Arslan","doi":"10.15275/cardioit.2020.0103","DOIUrl":"https://doi.org/10.15275/cardioit.2020.0103","url":null,"abstract":"Background: The most common reason for sudden cardiac death in heart failure is malign ventricular arrhythmias. LCZ 696 improves hospitalization and sudden cardiac death outcomes in heart failure, however mechanisms in preventing sudden cardiac death are still unknown. There is little information available assessing effect of LCZ 696 on Tp-e interval and related calculations. In this study, we aimed to investigate the impact of Sacubitril/valsartan therapy on Tp-e interval, Tp-e/QT ratio and Tp-e/QTc ratio in heart failure patients and its reflections on clinical arrhythmogenesis. Methods: The study was designed as a prospective observational fashion. 265 patients with implantable cardioverter-defibrillator (ICD), who were on regular follow up at Samsun Training and Research Hospital Outpatient Heart Failure Clinic, were validated for the study. Clinical, echocardiographic, electrocardiogram and device data before initiation and six months after dose optimizing were obtained. Results: Stroke volume, cardiac output and ejection fraction significantly improved after LCZ 696 treatment. T wave related parameters, QT and QTC intervals significantly diminished. Furthermore, there was a negative correlation between baseline Tp-e interval duration and the absolute percentile increase of stroke volume(r:-0.234, p: 0.042) and cardiac output (r: -0.240, p: 0.037). Conclusion: In our study, switching Renin-Angiotensin-Aldosterone-System inhibitor with Angiotensin receptor/neprilysin inhibitor was associated with increase in left ventricle performance and decrease of sustained ventricular arrhythmias that required ICD shocks. These positive findings were accompanied by improvements in surface electrocaridogram changes such as Tp-e and related indices.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121735084","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}

{"title":"The Deming–Shuhart cycle in problems of modeling the process of telemedical rehabilitation and preventive monitoring of cardiological patients","authors":"E. Kotelnikova","doi":"10.15275/cardioit.2019.0202","DOIUrl":"https://doi.org/10.15275/cardioit.2019.0202","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123096291","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}

{"title":"Application of information technologies for selection of treatment strategy in patients with stable coronary artery disease","authors":"O. Posnenkova, E. Genkal, Y. V. Popova, A. Kiselev, V. Gridnev","doi":"10.15275/cardioit.2019.0201","DOIUrl":"https://doi.org/10.15275/cardioit.2019.0201","url":null,"abstract":"Purpose: to study the frequency of divergence occurrence between decisions which have been made on the basis of 2018 ESC guidelines on myocardial revascularization (ESC 2018) and 2012 Appropriate use criteria for coronary revascularization (AUC 2012) and develop the algorithm for support of clinical decision making on the need for revascularization and the appropriateness of performed intervention in patients with stable coronary artery disease (CAD). Material and Methods — The data of 1531 patients with stable CAD (mean age 61,7±9,8 yrs, 78% men) derived from multicenter Russian registry of patients with stable CAD were studied. Indications for myocardial revascularization were determined according ESC 2018 and AUC 2012. The following clinical characteristics were considered: severity of angina, the degree of coronary arteries stenoses, the data of non-invasive testing, volume of medication. Results — In 34% of patients treatment strategy according to ESC 2018 and AUC 2012 was similar. In 15% of patients ESC 2018 and AUC 2012 differed concerning revascularization appropriateness. In 50% of patients AUC 2012 have not been defined, predominantly due to insufficient examination. The algorithm was developed which allows on the basis of co-using of ESC 2018 and AUC 2012 compose groups of patients for whom myocardial revascularization indicated primarily (ЕSC 2018+, AUC 2012+), in whom intervention can be delayed (ЕSC ISSN 2313-0318, Cardio-IT DOI: 10.15275/cardioit.2019.0201 2/4 2019. Volume 6 Issue 2 Article CID e0201 Coronary Artery Disease © 2019, Cardio-IT www.cardio-it.ru 2018 +, AUC 2012 -/±/?) and for whom only drug treatment indicated (ЕSC 2018 -, AUC 2012 -/±/?). Developed algorithm was realized as an automated module of data analytics system of CAD registry. Its implementation in the studied group revealed that only 20% who underwent myocardial revascularization were referred to the group of primary revascularization. Among 334 patients for whom intervention was indicated on the primarily basis just 37% underwent it. Conclusion — Implementation of the developed algorithm as an automated analytical registry module allows processing of unlimited volume of clinical data and defining priority of myocardial revascularization performance. Patients with the maximal benefit from intervention should be operated on the primarily basis.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121801924","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}

{"title":"Comparing methods of the identification of phase in analysis of electroencephalogram and cardiointervalogrogram","authors":"V. Skazkina, M. Simonyan, Elena V. Navrotskay, Elena P. Chernets, A. N. Khramkov, Dmitriy M. Yezhov, A. Kiselev","doi":"10.15275/cardioit.2019.0101","DOIUrl":"https://doi.org/10.15275/cardioit.2019.0101","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127274616","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}

{"title":"The impact of environmental quality on the level of blood pressure and the prevalence of cardiovascular diseases among residents of Saratov","authors":"O. Abrosimova, Ludmila A. Rycheva, O. Posnenkova","doi":"10.15275/cardioit.2019.0102","DOIUrl":"https://doi.org/10.15275/cardioit.2019.0102","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"64 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131166757","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}

{"title":"Simulation of autonomic blockade in mathematical model of cardiovascular regulation","authors":"Yurii M. Ishbulatov, A. Karavaev","doi":"10.15275/cardioit.2018.0201","DOIUrl":"https://doi.org/10.15275/cardioit.2018.0201","url":null,"abstract":"The article presents a multicomponent model of the autonomic regulation of blood circulation, which takes into account the self-oscillatory properties of the regulation systems. The adequacy of the model was tested by reproducing the dynamics of the parameters of blood circulation after the pharmacological blockade of the regulatory systems.","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133154571","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}

{"title":"Heart rate variability in patients with cardiomyopathy of various etiologies","authors":"M. Simonyan","doi":"10.15275/cardioit.2018.0202","DOIUrl":"https://doi.org/10.15275/cardioit.2018.0202","url":null,"abstract":"","PeriodicalId":164423,"journal":{"name":"Cardio-IT","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131406630","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}