2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)最新文献_第5页

Fractal angle modality patterns in RRI and respiration signal of healthy subjects responding to orthostasis and slow breathing 健康受试者直立和慢呼吸时RRI和呼吸信号的分形角模态

2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2022-10-09 DOI: 10.1109/ESGCO55423.2022.9931382

T. Bojić, Zoran Matić, Mirjana M. Platiša, Aleksandar Kalauzi

引用次数: 1

Methodological analysis of dual voltage-calcium whole-heart optical signals during restitution pacing under different thermal states 不同热状态下恢复起搏时双电压-钙全心光信号的方法学分析

2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2022-10-09 DOI: 10.1109/ESGCO55423.2022.9931366

Anna Crispino, A. Loppini, I. Uzelac, F. Fenton, A. Gizzi, S. Filippi

{"title":"Methodological analysis of dual voltage-calcium whole-heart optical signals during restitution pacing under different thermal states","authors":"Anna Crispino, A. Loppini, I. Uzelac, F. Fenton, A. Gizzi, S. Filippi","doi":"10.1109/ESGCO55423.2022.9931366","DOIUrl":"https://doi.org/10.1109/ESGCO55423.2022.9931366","url":null,"abstract":"Dual voltage-calcium fluorescence optical recordings are increasingly appealing to characterize complex spa-tiotemporal cardiac dynamics within ex-vivo whole-heart ex-perimental preparations. Synchrony among voltage and calcium signals allows us to unveil novel multi-scale and multi-physics couplings at the ventricular scale and quantify features that define the intrinsic nonlinearities of the observed phenom-ena. Within such a complex scenario, we propose a rigorous methodological analysis comparing and contrasting multiple cardiac alternans onset and evolution indicators for rabbit pacing-down restitution protocols. We introduce a novel integral index quantified upon voltage and calcium signals, validated against well-accepted post-processing analyses, and generalized in terms of statistical restitution curves obtained under four different thermal states. Our study suggests that such a novel indicator can further advance our predictability on alternans onset, linking the concurrent evolution to an innovative quan-tification of the characteristic length obtained for both voltage and calcium at different thermal states.","PeriodicalId":199691,"journal":{"name":"2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133275997","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}

引用次数: 0

The percentage of cardiac baroreflex sequences is independent from the sign of arterial pressure variations in healthy subjects 心脏压力反射序列的百分比独立于健康受试者动脉压力变化的迹象

2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2022-10-09 DOI: 10.1109/ESGCO55423.2022.9931383

Beatrice De Maria, L. D. Dalla Vecchia, V. Bari, B. Cairo, F. Gelpi, F. Perego, Anielle Cristhine Medeiros Takahashi, J. Milan-Mattos, V. Minatel, P. Rehder-Santos, A. Catai, A. Porta

{"title":"The percentage of cardiac baroreflex sequences is independent from the sign of arterial pressure variations in healthy subjects","authors":"Beatrice De Maria, L. D. Dalla Vecchia, V. Bari, B. Cairo, F. Gelpi, F. Perego, Anielle Cristhine Medeiros Takahashi, J. Milan-Mattos, V. Minatel, P. Rehder-Santos, A. Catai, A. Porta","doi":"10.1109/ESGCO55423.2022.9931383","DOIUrl":"https://doi.org/10.1109/ESGCO55423.2022.9931383","url":null,"abstract":"The sequence (SEQ) method can be exploited to differentiate the patterns of cardiac baroreflex origin according to the sign of systolic arterial pressure (SAP) variations. Indeed, this method distinguishes between patterns featuring heart period (HP) lengthening in response to SAP increase (SEQ++) from those featuring HP shortening in response to SAP decrease (SEQ–). The aim of the study was to compare the proportion between SEQ++ and SEQ– in healthy subjects at rest in supine condition (REST) and during active standing (STAND). One-hundred healthy subjects, divided into five groups based on age (21-30,31-40,41-50,51-60,61-70 yrs), were studied at REST and during STAND. The percentages of SEQ++ (%SEQ++) and SEQ– (%SEQ–) were calculated. Results showed that: i) %SEQ++ and %SEQ– were balanced regardless of age bin; ii) this conclusion held both at REST and during STAND; iii) %SEQ++ and %SEQ– increased from REST to STAND regardless of age bin; iv) the ageing process decreased %SEQ++ and %SEQ– during STAND, while the percentages were more preserved at REST. This finding might have relevant implications in understanding postural disturbances in advanced age.","PeriodicalId":199691,"journal":{"name":"2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131977508","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}

引用次数: 0

Optical Ultrastructure of Cardiac Tissue Helps to Reproduce Discordant Alternans by In Silico Data Assimilation 心脏组织的光学超微结构通过计算机数据同化帮助再现不协调交替

2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2022-10-09 DOI: 10.1109/ESGCO55423.2022.9931369

M. Hörning, A. Loppini, Julia Erhardt, F. Fenton, S. Filippi, A. Gizzi

{"title":"Optical Ultrastructure of Cardiac Tissue Helps to Reproduce Discordant Alternans by In Silico Data Assimilation","authors":"M. Hörning, A. Loppini, Julia Erhardt, F. Fenton, S. Filippi, A. Gizzi","doi":"10.1109/ESGCO55423.2022.9931369","DOIUrl":"https://doi.org/10.1109/ESGCO55423.2022.9931369","url":null,"abstract":"A relevant issue in cardiology is represented by identifying valuable biomarkers of cardiac dysfunctions and by designing reliable computational models to predict transitions into pathological cardiac dynamics. In this context, alternans regimes have been proven to anticipate tachycardia and fibrillation. Still, an open problem is defining accurate and convenient methods to predict the onset and evolution of alternans patterns and formulate reliable models reproducing alternans features as observed in experiments. In this contribution, we present an FFT-based method on voltage mapping data, named FFI (Fast-Fourier-Imaging), which is able to early identify alternating cardiac dynamics and recover tissue structural information. Our results show that FFI identifies alternans patterns with great accuracy, avoiding excessive data preprocessing required by other methods. The extracted optical ultrastructural details of the tissue are used to inform computational parameters by accurate data assimilation, which enables the in-silico recovery of the experimental ex-vivo observations of a canine heart. Clinical Relevance-The application of FFI analysis enables the almost real-time detection of concordant and discordant alternans patterns in cardiac tissue and opens the way to new mathematical approaches with significant impacts on personalized modeling and whole organ simulations.","PeriodicalId":199691,"journal":{"name":"2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123535937","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}

引用次数: 0

Frequency Domain Causal Interactions Between Heart Period and Systolic Arterial Pressure During Baroreflex Loading 压力反射负荷时心脏周期和收缩压的频域因果相互作用

2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2022-10-09 DOI: 10.1109/ESGCO55423.2022.9931374

A. Porta, B. Cairo, V. Bari, F. Gelpi, Beatrice De Maria, R. Colombo

引用次数: 1

Quantifying High-Order Interactions in Cardiovascular and Cerebrovascular Networks 量化心脑血管网络中的高阶相互作用

2022 12th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2022-10-09 DOI: 10.1109/ESGCO55423.2022.9931385

L. Faes, G. Mijatović, Laura Sparacino, R. Pernice, Y. Antonacci, A. Porta, S. Stramaglia

引用次数: 0