Pub Date : 2007-09-01DOI: 10.1109/CIC.2007.4745421
T.P. Patuwo, G. Wagner, O.A. Ajijola
The electrocardiogram (ECG) is an important diagnostic tool in the management of cardiac disease. Currently, most methods of introducing electrocardiography in medical schools rely on books, papers, and clinical observation (classical method). As more interactive software become available, it would be instructive for students to learn the ECG this way. This study compares the effectiveness of teaching the basics of electrocardiography using the classical method versus an interactive program, ECGSIM. Thirty-five students were randomized into two groups (classical and ECGSIM) and were taught the basic concepts of the ECG. This study demonstrates that teaching electrocardiography using ECGSIM is superior to traditional methods alone, indicating a potentially large role for interactive programs in teaching electrocardiography.
{"title":"Comparison of teaching basic electrocardiographic concepts with and without ECGSIM, an interactive program for electrocardiography","authors":"T.P. Patuwo, G. Wagner, O.A. Ajijola","doi":"10.1109/CIC.2007.4745421","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745421","url":null,"abstract":"The electrocardiogram (ECG) is an important diagnostic tool in the management of cardiac disease. Currently, most methods of introducing electrocardiography in medical schools rely on books, papers, and clinical observation (classical method). As more interactive software become available, it would be instructive for students to learn the ECG this way. This study compares the effectiveness of teaching the basics of electrocardiography using the classical method versus an interactive program, ECGSIM. Thirty-five students were randomized into two groups (classical and ECGSIM) and were taught the basic concepts of the ECG. This study demonstrates that teaching electrocardiography using ECGSIM is superior to traditional methods alone, indicating a potentially large role for interactive programs in teaching electrocardiography.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122580745","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745464
J. Requena-Carrión, J. Vaisanen, F. Alonso-Atienza, J. Rojo-álvarez, J. Hyttinen, A. García-Alberola
Lead design is a critical factor for detecting and redetecting lethal arrhythmias in electrograms (EGM) from Implantable Cardioverter Defibrillators (ICD). The estimation of the scope of a lead can help to elucidate the anatomical origin of recorded EGM and explain signal features. In this paper, we compare quantitatively the scope of true and integrated bipolar sensing leads by combining bioelectric signal modeling and numerical analysis. We define the scope in terms of the Mean Square Difference (MSD) between the EGM generated by the whole ventricular myocardium and the EGM generated by smaller regions within the ventricular myocardium. Results show that integrated bipolar leads have a wider scope than true bipolar leads, although narrower than unipolar leads. Further, the extent of myocardium within the scope is distributed for integrated bipolar leads along the septum and anteriorly, while for true bipolar leads is located close to the electrode site.
{"title":"Comparison of the scope of true and integrated bipolar leads in implantable cardioverter defibrillators","authors":"J. Requena-Carrión, J. Vaisanen, F. Alonso-Atienza, J. Rojo-álvarez, J. Hyttinen, A. García-Alberola","doi":"10.1109/CIC.2007.4745464","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745464","url":null,"abstract":"Lead design is a critical factor for detecting and redetecting lethal arrhythmias in electrograms (EGM) from Implantable Cardioverter Defibrillators (ICD). The estimation of the scope of a lead can help to elucidate the anatomical origin of recorded EGM and explain signal features. In this paper, we compare quantitatively the scope of true and integrated bipolar sensing leads by combining bioelectric signal modeling and numerical analysis. We define the scope in terms of the Mean Square Difference (MSD) between the EGM generated by the whole ventricular myocardium and the EGM generated by smaller regions within the ventricular myocardium. Results show that integrated bipolar leads have a wider scope than true bipolar leads, although narrower than unipolar leads. Further, the extent of myocardium within the scope is distributed for integrated bipolar leads along the septum and anteriorly, while for true bipolar leads is located close to the electrode site.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122247766","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745529
A. Jalali, A. Ghaffari, M. Ghasemi, H. Sadabadi, P. Ghorbanian, H. Golbayani
An approach to classify disorders in autonomic control of cardiovascular system is proposed in this paper. The target of this study is to highlight main features of malfunctions in cardiovascular system due to autonomic disorder. Collecting the data from the physionet archive, we divide patients into two groups of normal and abnormal, based on having autonomic disorder in their cardiovascular system or not. Systolic blood pressure (SBP) and heart rate (HR) time series are evaluated for each patient. We then plot the diagram of SBP against HR for all patients in a single figure. Fuzzy c-means clustering (FCM) method is also applied to cluster data into two groups. A neural network is then implemented to classify and to distinguish the two groups. The network is trained with data of a normal patient and is tested with data of other normal and abnormal patients. Result show that selected features can clearly detect disorders in autonomic system.
{"title":"Disorder classification in the regulatory mechanism of the cardiovascular system","authors":"A. Jalali, A. Ghaffari, M. Ghasemi, H. Sadabadi, P. Ghorbanian, H. Golbayani","doi":"10.1109/CIC.2007.4745529","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745529","url":null,"abstract":"An approach to classify disorders in autonomic control of cardiovascular system is proposed in this paper. The target of this study is to highlight main features of malfunctions in cardiovascular system due to autonomic disorder. Collecting the data from the physionet archive, we divide patients into two groups of normal and abnormal, based on having autonomic disorder in their cardiovascular system or not. Systolic blood pressure (SBP) and heart rate (HR) time series are evaluated for each patient. We then plot the diagram of SBP against HR for all patients in a single figure. Fuzzy c-means clustering (FCM) method is also applied to cluster data into two groups. A neural network is then implemented to classify and to distinguish the two groups. The network is trained with data of a normal patient and is tested with data of other normal and abnormal patients. Result show that selected features can clearly detect disorders in autonomic system.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126572653","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745407
V. Monasterio, J.P. Martinez
Several methods have been proposed to automatically detect and estimate T-wave alternans (TWA) in the ECG, all of them operating on a single-lead basis. In this study a multilead detection scheme is proposed. It combines principal component analysis with the Laplacian likelihood ratio method to improve the detection results. A simulation is carried out to evaluate the effect of different types of simulated and physiological noise, and to assess the performance of this detection scheme. According to simulation results, the proposed multilead approach can detect alternans with a SNR 30 dB lower than the single-lead approach, showing a remarkable improvement of the sensitivity to low-level alternans.
{"title":"A multilead approach to T-wave alternans detection combining principal component analysis and the Laplacian likelihood ratio method","authors":"V. Monasterio, J.P. Martinez","doi":"10.1109/CIC.2007.4745407","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745407","url":null,"abstract":"Several methods have been proposed to automatically detect and estimate T-wave alternans (TWA) in the ECG, all of them operating on a single-lead basis. In this study a multilead detection scheme is proposed. It combines principal component analysis with the Laplacian likelihood ratio method to improve the detection results. A simulation is carried out to evaluate the effect of different types of simulated and physiological noise, and to assess the performance of this detection scheme. According to simulation results, the proposed multilead approach can detect alternans with a SNR 30 dB lower than the single-lead approach, showing a remarkable improvement of the sensitivity to low-level alternans.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127623722","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745457
G. Soto, J. Spertus
In an era where novel clinical, biochemical, genetic and imaging determinants impacting patient outcomes are being continuously discovered, the field of outcomes research offers clinicians and patients the potential to make better informed health care decisions through the use of sophisticated risk-adjustment models that incorporate patientspsila unique clinical characteristics. EPOCHreg and ePRISMreg comprise a novel application suite for delivering complex risk-adjustment models to the bedside and are currently in use at multiple medical centers. An intuitive visual interface for building models allows outcomes researchers to rapidly translate prediction models into web-based decision support and reporting tools. A flexible XML web services architecture facilitates integration with existing clinical information systems, allows for remote access to the modeling engine, and allows models to be exported across systems via the Predictive Model Markup Language standard.
在一个影响患者预后的新型临床、生化、遗传和影像学决定因素不断被发现的时代，结果研究领域为临床医生和患者提供了通过使用包含患者独特临床特征的复杂风险调整模型来做出更明智的医疗保健决策的潜力。EPOCHreg和ePRISMreg组成了一个新颖的应用程序套件，用于向床边提供复杂的风险调整模型，目前在多个医疗中心使用。用于构建模型的直观可视化界面允许结果研究人员快速将预测模型转换为基于web的决策支持和报告工具。灵活的XML web服务体系结构促进了与现有临床信息系统的集成，允许远程访问建模引擎，并允许通过Predictive Model Markup Language标准跨系统导出模型。
{"title":"EPOCH® and ePRISM®: A web-based translational framework for bridging outcomes research and clinical practice","authors":"G. Soto, J. Spertus","doi":"10.1109/CIC.2007.4745457","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745457","url":null,"abstract":"In an era where novel clinical, biochemical, genetic and imaging determinants impacting patient outcomes are being continuously discovered, the field of outcomes research offers clinicians and patients the potential to make better informed health care decisions through the use of sophisticated risk-adjustment models that incorporate patientspsila unique clinical characteristics. EPOCHreg and ePRISMreg comprise a novel application suite for delivering complex risk-adjustment models to the bedside and are currently in use at multiple medical centers. An intuitive visual interface for building models allows outcomes researchers to rapidly translate prediction models into web-based decision support and reporting tools. A flexible XML web services architecture facilitates integration with existing clinical information systems, allows for remote access to the modeling engine, and allows models to be exported across systems via the Predictive Model Markup Language standard.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129224414","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745414
P. Stein, R. Cohen, N. Devlin, E.M. Lundequam, P. Domitrovich, J. Gottdiener, S. Redline
To characterize changes in nighttime cyclic variation in HR (CVHR) with advancing age in older adults, CVHR was quantified for N=56 adults with 2 Holter recordings 5 yrs apart (CHS1 and CHS 2) in the cardiovascular health study (CHS) and 2 overnight polysomnograms 5 yrs apart in the sleep heart health study (SHHS1 and SHHS2) using MatLab. Baseline age was 71plusmn3 yrs. The number of CVHR events was also normalized to time in bed (CVHR index). CVHR index did not change across recordings, but males had higher values (p=0.009). Mean HR increase during CVHR was similar in the first 3 recording but declined on the last (p<0.02). CVHR duration increased, but CHS1 vs. CHS2 and SHHS1 vs. SHHS2 were NS (rest, p<0.007). We conclude that CVHR is frequent at night in older adults, but results suggest an age-related trend towards decreased magnitude and longer durations of HR arousals, possibly due to the aging of the autonomic nervous system.
为了描述老年人夜间HR (CVHR)周期变化随年龄增长的变化，我们对56名成年人的CVHR进行了量化，其中包括心血管健康研究(CHS)中间隔5年的2次动态心电图(CHS1和CHS 2)和睡眠心脏健康研究(SHHS1和SHHS2)中间隔5年的2次夜间多路睡眠图(MatLab)。基线年龄71岁+ 3岁。CVHR事件的数量也被归一化到床上时间(CVHR指数)。CVHR指数在不同的记录中没有变化，但男性的值更高(p=0.009)。CVHR期间的平均HR增加在前3次记录中相似，但在最后一次记录中下降(p<0.02)。CVHR持续时间增加，但CHS1 vs CHS2、SHHS1 vs SHHS2为NS(其余，p<0.007)。我们的结论是，CVHR在老年人中经常发生在夜间，但结果表明，与年龄相关的趋势是HR唤醒的强度降低和持续时间延长，可能是由于自主神经系统的衰老。
{"title":"Cyclic variation in heart rate during sleep in four recordings of up to 13 years in elderly adults","authors":"P. Stein, R. Cohen, N. Devlin, E.M. Lundequam, P. Domitrovich, J. Gottdiener, S. Redline","doi":"10.1109/CIC.2007.4745414","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745414","url":null,"abstract":"To characterize changes in nighttime cyclic variation in HR (CVHR) with advancing age in older adults, CVHR was quantified for N=56 adults with 2 Holter recordings 5 yrs apart (CHS1 and CHS 2) in the cardiovascular health study (CHS) and 2 overnight polysomnograms 5 yrs apart in the sleep heart health study (SHHS1 and SHHS2) using MatLab. Baseline age was 71plusmn3 yrs. The number of CVHR events was also normalized to time in bed (CVHR index). CVHR index did not change across recordings, but males had higher values (p=0.009). Mean HR increase during CVHR was similar in the first 3 recording but declined on the last (p<0.02). CVHR duration increased, but CHS1 vs. CHS2 and SHHS1 vs. SHHS2 were NS (rest, p<0.007). We conclude that CVHR is frequent at night in older adults, but results suggest an age-related trend towards decreased magnitude and longer durations of HR arousals, possibly due to the aging of the autonomic nervous system.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127839392","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745478
M. Svendsen, T. Oostendorp, E. Berbari
Auto-regressive modeling procedures (AR) have been used to quantify low magnitude components of abnormal activation within the QRS complex, called abnormal intra-QRS potentials (AIQPs). Research is still needed to identify the range in which the AR model can detect AIQP sources in different locations in the heart. A ventricular source model and forward model of electrocardiography called ECGSIM was used to test the ability of the AR model in detecting delays at various locations in the ventricles. A high resolution ECGSIM heart model was created to provide greater temporal and spatial control of the AIQP sources. The overall optimal model orders in this study were at an intermediate range seen previously in the literature. The ability of the AR model to detect the AIQP sources was dependent on the resolution of the heart model and the size and location of the AIQP sources.
{"title":"Evaluation of auto-regressive modeling procedures for the detection of abnormal intra-QRS potentials using a boundary element electrocardiogram model","authors":"M. Svendsen, T. Oostendorp, E. Berbari","doi":"10.1109/CIC.2007.4745478","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745478","url":null,"abstract":"Auto-regressive modeling procedures (AR) have been used to quantify low magnitude components of abnormal activation within the QRS complex, called abnormal intra-QRS potentials (AIQPs). Research is still needed to identify the range in which the AR model can detect AIQP sources in different locations in the heart. A ventricular source model and forward model of electrocardiography called ECGSIM was used to test the ability of the AR model in detecting delays at various locations in the ventricles. A high resolution ECGSIM heart model was created to provide greater temporal and spatial control of the AIQP sources. The overall optimal model orders in this study were at an intermediate range seen previously in the literature. The ability of the AR model to detect the AIQP sources was dependent on the resolution of the heart model and the size and location of the AIQP sources.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132695029","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745504
B. Steele
A study was conducted to evaluate the ability of a simple one-dimensional (1D) computational fluid dynamics (CFD) model to identify a hemodynamically significant renal artery stenosis by predicting pressure loss and flow rate across a renal artery stenosis. Six combinations of wall properties, inlet, and outlet boundary conditions were used to evaluate their effects on blood pressure estimation. All combinations of boundary conditions in the 1D model produced pressure to flow relations that compared favourably with previously reported in vitro and three-dimensional CFD model of a similar geometry. The mean error of the 1D results, using the in vitro model as the gold standard, ranges from 0.53 to 3.46 mmHg. While further work is required to optimize the specification of renal outlet boundary conditions from patient specific data, these results show that a 1D model may be used to identify pressure gradients across a renal artery stenoses.
{"title":"Using one-dimensional finite element analysis to estimate differential pressure of renal artery stenoses","authors":"B. Steele","doi":"10.1109/CIC.2007.4745504","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745504","url":null,"abstract":"A study was conducted to evaluate the ability of a simple one-dimensional (1D) computational fluid dynamics (CFD) model to identify a hemodynamically significant renal artery stenosis by predicting pressure loss and flow rate across a renal artery stenosis. Six combinations of wall properties, inlet, and outlet boundary conditions were used to evaluate their effects on blood pressure estimation. All combinations of boundary conditions in the 1D model produced pressure to flow relations that compared favourably with previously reported in vitro and three-dimensional CFD model of a similar geometry. The mean error of the 1D results, using the in vitro model as the gold standard, ranges from 0.53 to 3.46 mmHg. While further work is required to optimize the specification of renal outlet boundary conditions from patient specific data, these results show that a 1D model may be used to identify pressure gradients across a renal artery stenoses.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130219700","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745435
I. Legarreta, S. Bauer, R. W. dos Santos, H. Koch, M. Bar
Time-resolved surface activation time maps recorded from isolated rabbit hearts were analyzed in order to compare them with analogue maps generated by a computer model. Recordings were obtained under normal conditions as well as after the administration of ajmaline. In parallel, the measured quantities were simulated in a realistic computer model of the rabbit heart. The effect of ajmaline was reproduced by reducing the conductivity of sodium channels GNa in the model. It was observed that addition of a given amount of ajmaline leads to an increase of the QRS time of up to 33% and a decrease of typical velocities by 20-40% with respect to the normal conditions. The velocity speeds obtained display large variations. A velocity decrease of about 20% was reproduced in the computer model by a reduction of the parameter GNa by 60%. Such a change in the model induces a corresponding QRS time by 20%.
{"title":"Spatial properties and effects of ajmaline for epicardial propagation on isolated rabbit hearts: Measurements and a computer study","authors":"I. Legarreta, S. Bauer, R. W. dos Santos, H. Koch, M. Bar","doi":"10.1109/CIC.2007.4745435","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745435","url":null,"abstract":"Time-resolved surface activation time maps recorded from isolated rabbit hearts were analyzed in order to compare them with analogue maps generated by a computer model. Recordings were obtained under normal conditions as well as after the administration of ajmaline. In parallel, the measured quantities were simulated in a realistic computer model of the rabbit heart. The effect of ajmaline was reproduced by reducing the conductivity of sodium channels GNa in the model. It was observed that addition of a given amount of ajmaline leads to an increase of the QRS time of up to 33% and a decrease of typical velocities by 20-40% with respect to the normal conditions. The velocity speeds obtained display large variations. A velocity decrease of about 20% was reproduced in the computer model by a reduction of the parameter GNa by 60%. Such a change in the model induces a corresponding QRS time by 20%.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"312 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122967529","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 : 2007-09-01DOI: 10.1109/CIC.2007.4745609
T.G. Zimmerman, T. Syeda-Mahmood
A statistical means to automatically detect heart disease from twelve channel ECG waveforms is reported. Patient ECG records from the PTB Diagnostic ECG Database are assigned to one or more of 18 heart disease groups. A single heart beat cycle near the beginning of the record is used to measure eight temporal intervals (e.g. QT, ST, PR, QS) for each of the twelve channels, resulting in 96 parameters for each patient record. The average and standard deviation of the 96 parameters for 63 non-disease patients are used as a control reference. The number of parameters that exceed two times the standard deviation of the control reference is used as a disease indicator. Using ten or more out-of-bound parameters as the disease criteria, 72% of disease patient records are correctly identified while 8% of control patient records are falsely identified as having a heart disease.
{"title":"Automatic detection of heart disease from twelve channel electrocardiogram waveforms","authors":"T.G. Zimmerman, T. Syeda-Mahmood","doi":"10.1109/CIC.2007.4745609","DOIUrl":"https://doi.org/10.1109/CIC.2007.4745609","url":null,"abstract":"A statistical means to automatically detect heart disease from twelve channel ECG waveforms is reported. Patient ECG records from the PTB Diagnostic ECG Database are assigned to one or more of 18 heart disease groups. A single heart beat cycle near the beginning of the record is used to measure eight temporal intervals (e.g. QT, ST, PR, QS) for each of the twelve channels, resulting in 96 parameters for each patient record. The average and standard deviation of the 96 parameters for 63 non-disease patients are used as a control reference. The number of parameters that exceed two times the standard deviation of the control reference is used as a disease indicator. Using ten or more out-of-bound parameters as the disease criteria, 72% of disease patient records are correctly identified while 8% of control patient records are falsely identified as having a heart disease.","PeriodicalId":406683,"journal":{"name":"2007 Computers in Cardiology","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121424203","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：