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Complexity modulation in heart rate variability during pathological mental states of bipolar disorders 双相情感障碍病理性精神状态中心率变异性的复杂性调节
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847538
G. Valenza, M. Nardelli, G. Bertschy, A. Lanatà, E. Scilingo
{"title":"Complexity modulation in heart rate variability during pathological mental states of bipolar disorders","authors":"G. Valenza, M. Nardelli, G. Bertschy, A. Lanatà, E. Scilingo","doi":"10.1109/ESGCO.2014.6847538","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847538","url":null,"abstract":"This study reports on a Multiscale Entropy (MSE) analysis on Heart Rate Variability (HRV) series gathered from eight patients with pathological mental states. Specifically, we found that an HRV complexity modulation exists in bipolar patients who exhibit mood states among depression, hypoma-nia, and euthymia, i.e., good affective balance. Two different methodologies for the choice of the sample entropy radius value were also compared. MSE analysis was performed on long-term night recordings acquired using a comfortable sensing t-shirt with integrated fabric electrodes and sensors developed in the frame of the European project PSYCHE. As the current clinical practice in diagnosing patients affected by psychiatric disorders such as bipolar disorder is only based on verbal interviews and scores from specific questionnaires, these findings increase the reliability of using heartbeat complexity as a more objective clinical biomarkers for bipolar disorders.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116962346","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: 3
Identification of fundamental heart sounds from PCG using blanket fractal dimension 利用毯子分形维数识别心电基本音
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847550
M. Paskas, A. Gavrovska, N. Reljin
{"title":"Identification of fundamental heart sounds from PCG using blanket fractal dimension","authors":"M. Paskas, A. Gavrovska, N. Reljin","doi":"10.1109/ESGCO.2014.6847550","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847550","url":null,"abstract":"Paper introduces a new approach for S1 versus S2 heart sound classification. The blanket fractal dimension is used for the first time for recognizing a heart sound candidate as S1 or S2 without the use of synchronous electrocardiogram. Even though the systole and diastole duration is not calculated for further improvement of the results, the obtained accuracy is more than 80% without any prior knowledge of patients' health issues.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130450919","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: 8
Does cerebral blood flow autoregulation differ between spontaneously increasing and decreasing sequences in blood pressure? 脑血流自动调节在血压自发升高和自发降低的序列中有区别吗?
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847574
D. Simpson, A. Birch, R. Panerai
{"title":"Does cerebral blood flow autoregulation differ between spontaneously increasing and decreasing sequences in blood pressure?","authors":"D. Simpson, A. Birch, R. Panerai","doi":"10.1109/ESGCO.2014.6847574","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847574","url":null,"abstract":"The response of cerebral blood flow to increases and decreases in blood pressure have been reported to differ. The potential impact of this on the commonly used linear-time-invariant modelling of only spontaneous changes in blood pressure has so far not been tested. Results show that this could have a major impact on quantitative measures of cerebral autoregulaton.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129241096","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: 2
Changes in frequency components of blood flow oscillations in hyperglycemic obese people 高血糖肥胖患者血流振荡频率成分的变化
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847581
T. Mastantuono, E. Muscariello, T. Novellino, D. Lapi, M. Cesarelli, G. D'Addio, L. Iuppariello, A. Colantuoni
{"title":"Changes in frequency components of blood flow oscillations in hyperglycemic obese people","authors":"T. Mastantuono, E. Muscariello, T. Novellino, D. Lapi, M. Cesarelli, G. D'Addio, L. Iuppariello, A. Colantuoni","doi":"10.1109/ESGCO.2014.6847581","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847581","url":null,"abstract":"Microvascular dysfunctions are responsible for the vascular complications of diabetes, frequently observed in obese subjects. The present study was aimed to assess microvascular skin blood flow and related oscillations in hyperglycemic obese subjects. Twenty-eight normoglycemic controls and twenty-nine hyperglycemic subjects were recruited from our Outpatient Clinics. Anthropometric measurements were evaluated and bioimpedance analysis was performed. Moreover, glycemia, glycated hemoglobin (HbA1c) and basal insulin were measured. Finally, skin microvascular blood flow was determined by a laser Doppler flowmeter and oscillations in flow were analyzed by power spectrum methods. The mean skin blood flow and total power spectral density were lower in the hyperglycemic patients than in normoglycemic controls. Moreover, hyperglycemic subjects showed lower power spectral density of oscillations, related to myogenic activity, compared to the those observed in normoglycemic people. Therefore, hyperglycemia appears to be associated to impaired vascular smooth muscle cell function and alterations in microvascular blood flow regulation.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131280649","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: 6
Day-to-night variations of RR intervals complexity observed in 24-h ECG Holter R 24小时动态心电图R中RR间期复杂性的昼夜变化
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847590
S. Zurek, J. Piskorski, Premislaw Guzik, M. Kośmider, Mateus Lewandowski, P. Castiglioni
{"title":"Day-to-night variations of RR intervals complexity observed in 24-h ECG Holter R","authors":"S. Zurek, J. Piskorski, Premislaw Guzik, M. Kośmider, Mateus Lewandowski, P. Castiglioni","doi":"10.1109/ESGCO.2014.6847590","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847590","url":null,"abstract":"Complexity of RR intervals can be measured by Sample entropy (SampEn) traditionally estimated only for a limited number of points by fixing the values of the embedding dimension \"m\" and distance threshold \"r\". Recently we have proposed a new and fast Norm Component Matrix (NCM) algorithm for SampEn calculation - it allows analyzing whole ranges of (m, r) values leading to entropy surfaces. This study is aimed at the analysis of these surfaces in the scope of day-to-night variations of RR intervals complexity estimated by the NCM.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"30 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131383620","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
Study of electrogram organization and synchronization in paroxysmal and persistent/permanent atrial fibrillation 阵发性和持续性/永久性房颤的电图组织与同步研究
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847535
A. Alcaine, Angel Arenai, P. Laguna, J. P. Martínez
{"title":"Study of electrogram organization and synchronization in paroxysmal and persistent/permanent atrial fibrillation","authors":"A. Alcaine, Angel Arenai, P. Laguna, J. P. Martínez","doi":"10.1109/ESGCO.2014.6847535","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847535","url":null,"abstract":"In this study, we measure and compare organization and synchronization of electrograms (EGM) obtained from patients with different types of diagnosed atrial fibrillation (AF). The studied database is composed of 70 patients admitted for ablation procedure and previously classified as paroxysmal or persistent/permanent AF. From those patients we analyzed bipolar EGM recordings during AF which were acquired using a circular catheter placed in the pulmonary veins. Results, which are given next as median (IQR), suggest that shorter (145.9 (27) ms vs. 161.3 (33.6) ms, p <; 0.01) and less stable AF cycle length (32.1 (36) ms vs. 7.2 (32.7) ms, p <; 0.01) is associated with persistent/permanent AF. Moreover, a significant reduction of the synchronization (0.35 (0.44) vs. 0.47 (0.51), p = 0.03) and linear relation (0.27 (0.40) vs. 0.36 (0.47), p = 0.01) between EGMs from antipodal electrodes of the same catheter has been found in persistent/permanent AF patients.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114537280","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
Fractal characteristics of blood pressure and heart rate from ambulatory blood pressure monitored over 24 hours 24小时内动态血压监测血压和心率的分形特征
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847525
A. Faini, G. Parati, G. Bilo, M. Di Rienzo, P. Castiglioni
{"title":"Fractal characteristics of blood pressure and heart rate from ambulatory blood pressure monitored over 24 hours","authors":"A. Faini, G. Parati, G. Bilo, M. Di Rienzo, P. Castiglioni","doi":"10.1109/ESGCO.2014.6847525","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847525","url":null,"abstract":"Since devices for measuring ambulatory blood pressure (BP) noninvasively have very low sampling rates, BP fluctuations are generally quantified by simple indices of variability. Aim of this study is to describe the characteristics of a more sophisticated feature of BP variability, the fractal dimension (FD), as assessed by ambulatory BP devices in healthy volunteers. 24-hour ambulatory BP was recorded in 47 normotensive volunteers; 4-hour segments of systolic BP (SBP), diastolic BP (DBP) and heart rate (HR) were selected at daytime and nighttime. Mean (M), standard deviation (SD) and FD were calculated in each segment. While M and SD decreased from day to night, as expected, SBP FD tended to increase at night, where it was significantly greater than DBP FD. The HR FD was always significantly lower than the FD of SBP or DBP. Results suggest that FD of ambulatory BP may provide novel information on the cardiovascular control.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121521313","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: 2
Action of the sympathetic and parasympathetic nervous system on cardiovascular dynamics revealed by blocking drugs 阻断药物揭示交感和副交感神经系统对心血管动力学的作用
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847587
Philip T. Clemson, J. Hoag, A. Stefanovska, D. Eckberg
{"title":"Action of the sympathetic and parasympathetic nervous system on cardiovascular dynamics revealed by blocking drugs","authors":"Philip T. Clemson, J. Hoag, A. Stefanovska, D. Eckberg","doi":"10.1109/ESGCO.2014.6847587","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847587","url":null,"abstract":"The effect of the drugs atropine (a parasympathetic blocker) and propranolol (a sympathetic blocker) is investigated. In the experiment, the subjects were measured under an experimental protocol that used saline controls, with both spontaneous and paced breathing as well as apnea. The recorded data included an electrocardiogram, end tidal CO2, blood pressure and a direct measurement of the muscle sympathetic nerve activity. The signals were analysed using time-frequency methods and an information theory approach, revealing information about the change in coupling and coherence that has not previously been studied. The results show that atropine strongly reduces the power in the signals and also removes the coupling and coherence between cardiovascular oscillations. The effects occur across a wide range of frequencies and provide insight into the neurophysiological mechanisms involved in the regulation of the cardiovascular system.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":" 14","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120834792","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: 1
Spatio-temporal correlation of paced cardiac tissue 节律性心脏组织的时空相关性
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847600
S. Filippi, C. Cherubini, A. Gizzi, A. Loppini, F. Fenton
{"title":"Spatio-temporal correlation of paced cardiac tissue","authors":"S. Filippi, C. Cherubini, A. Gizzi, A. Loppini, F. Fenton","doi":"10.1109/ESGCO.2014.6847600","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847600","url":null,"abstract":"Complex spatiotemporal alternans patterns of action potential duration have been recently observed in large mammalian hearts. Multiple routes between the occurrence of high-order rhythms (discordant alternans) and their transition to chaos (ventricular fibrillation) have also been reported. In this work we extend the analysis of voltage optical mapped signals from right canine ventricles during rhythmic and arrhythmic regimes. We evaluate the correlation length between pairs of points of large spatial domains to extract the typical length scale of the system in different regimes. Critical scale length transitions are discussed with respect to regular pacing frequencies and onset of fibrillation.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"41 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121176317","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
Classification of cardiac rhythm based on heart rate dynamics 基于心率动力学的心律分类
2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO) Pub Date : 2014-05-25 DOI: 10.1109/ESGCO.2014.6847534
M. Carrara, L. Carozzi, S. Cerutti, M. Ferrario, D. Lake, J. Moorman
{"title":"Classification of cardiac rhythm based on heart rate dynamics","authors":"M. Carrara, L. Carozzi, S. Cerutti, M. Ferrario, D. Lake, J. Moorman","doi":"10.1109/ESGCO.2014.6847534","DOIUrl":"https://doi.org/10.1109/ESGCO.2014.6847534","url":null,"abstract":"Cardiac rhythm classification is usually achieved using the raw electrocardiogram signal (EKG), which is not always available. By means of dynamical measures we developed a RR based classifier which is able to distinguish normal sinus rhythm (NSR), atrial fibrillation (AF) and sinus rhythm with ectopy with an accuracy of 99%, 81% and 77%, respectively, using 10-minute segments. The classifier was built on the University of Virginia (UVa) Holter database.","PeriodicalId":385389,"journal":{"name":"2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129408059","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: 3
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