Filters








1,365 Hits in 9.1 sec

Robust independent component analysis for blind source separation and extraction with application in electrocardiography

Vicente Zarzoso, Pierre Comon
2008 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society  
The performance of this modification is illustrated on signal recordings issued from electrocardiography. The authors are with the  ...  This new feature makes it possible to extract the sources of interest only, or a subspace thereof, with the subsequent reduction in computational complexity and error accumulation.  ...  REFERENCES V1 of an atrial fibrillation ECG. (b) Atrial activity contribution estimated by CoM2+SOBI. (c) Atrial activity contribution estimated by FastICA+SOBI.  ... 
doi:10.1109/iembs.2008.4649921 pmid:19163424 fatcat:6xc6z6z7dzgdxkqtu3l4m2jxwi

Applications of Signal Analysis to Atrial Fibrillation [chapter]

Jose Joaquin, Raul Alcaraz
2013 Atrial Fibrillation - Mechanisms and Treatment  
Acknowledgements This work was supported by projects TEC2010-20633 from the Spanish Ministry of Science and Innovation and PPII11-0194-8121 from Junta de Comunidades de Castilla-La Mancha.  ...  Consequently a crucial step in BSS-based atrial activity extraction is to identify the sources(s) which contains atrial activity.  ...  (a) Surface ECG lead V1 from a patient in AF ready to be analyzed. (b) Atrial activity extracted from lead V1. (c) Atrial activity power spectral density.  ... 
doi:10.5772/53409 fatcat:qlsbotvxtnb2lbb6x43mtqxgem

Side Effects of Insecticides on Natural Enemies and Possibility of Their Integration in Plant Protection Strategies [chapter]

Nabil El-Wakeil, Nawal Gaafar, Ahmed Sallam, Christa Volkmar
2013 Insecticides - Development of Safer and More Effective Technologies  
Acknowledgements This work was supported by projects TEC2010-20633 from the Spanish Ministry of Science and Innovation and PPII11-0194-8121 from Junta de Comunidades de Castilla-La Mancha.  ...  Consequently a crucial step in BSS-based atrial activity extraction is to identify the sources(s) which contains atrial activity.  ...  (a) Surface ECG lead V1 from a patient in AF ready to be analyzed. (b) Atrial activity extracted from lead V1. (c) Atrial activity power spectral density.  ... 
doi:10.5772/54199 fatcat:grrunnp7pfdnldk7ebziwoib34

Understanding Atrial Fibrillation: The Signal Processing Contribution, Part I

Luca Mainardi, Leif Sörnmo, Sergio Cerutti
2008 Synthesis Lectures on Biomedical Engineering  
The method, which is based on an hidden Markov model (HMM), is evaluated using simulated AF mixed with different types of real noise obtained from ECG.  ...  This licentiate thesis, containing two papers, is in the field of biomedical signal processing with main focus on signal processing of the ECG in patients with atrial fibrillation (AF).  ...  Average Beat Subtraction Methods Another approach for extracting atrial activity from ECG signals during AF is to subtract a template QRST complex from each QRST complex of the ECG signal.  ... 
doi:10.2200/s00152ed1v01y200809bme024 fatcat:54pvofa7ebg6fc5ly2fcyngmly

Robust Independent Component Analysis by Iterative Maximization of the Kurtosis Contrast With Algebraic Optimal Step Size

V. Zarzoso, P. Comon
2010 IEEE Transactions on Neural Networks  
RobustICA's capabilities in processing real-world data involving noncircular complex strongly super-Gaussian sources are illustrated by the biomedical problem of atrial activity (AA) extraction in atrial  ...  fibrillation (AF) electrocardiograms (ECGs), where it outperforms an alternative ICA-based technique.  ...  activity signal from surface electrocardiogram (ECG) recordings of atrial fibrillation.  ... 
doi:10.1109/tnn.2009.2035920 pmid:20028621 fatcat:j3t3ty7v4vbofmuskhkfhbkilm

Understanding Atrial Fibrillation: The Signal Processing Contribution, Part II

Luca Mainardi, Leif Sörnmo, Sergio Cerutti
2008 Synthesis Lectures on Biomedical Engineering  
Under the appearance of being a monothematic book on atrial fibrillation, the reader will not only recognize common problems of biomedical signal processing but also discover that analysis of atrial fibrillation  ...  Research on atrial fibrillation has stimulated the development of a wide range of signal processing tools to better understand the mechanisms ruling its initiation, maintenance, and termination.  ...  ACKNOWLEDGEMENTS This book was made possible because of the collaboration between scientists who have made contributions to atrial fibrillation research.  ... 
doi:10.2200/s00153ed1v01y200809bme025 fatcat:twrggrnzcbcitpadlthlip253u

Systematic review of the safety and efficacy of antazoline in the treatment of atrial fibrillation

Raghad Aldulaymi, Ahmad Z. Al Meslamani
2022 Journal of Pharmacy & Pharmacognosy Research  
Aims: To systematically review the literature on the safety and efficacy of antazoline in the treatment of recent-onset short-duration atrial fibrillation and to compare the clinical efficacy of antazoline  ...  "antazoline" AND other terms such as "antiarrhythmic", "atrial fibrillation", and "arrhythmia".  ...  This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.  ... 
doaj:36b17b9c9cf04021b73893eb86314ed8 fatcat:zidzhnc34ncupmq6yqpvvkizye

The Contribution of Nonlinear Methods in the Understanding of Atrial Fibrillation [chapter]

Raul Alcaraz, Jose Joaquin
2013 Atrial Fibrillation - Mechanisms and Treatment  
Thereby, the dissociation of atrial and ventricular components is mandatory [12] . Nowadays, several methods to extract the AA signal from surface ECG recordings exist.  ...  Additionally, the f wave analysis from surface ECG recordings is complicated by the simultaneous presence of VA, which is of much higher amplitude.  ...  The atrial activations are then detected by threshold crossing and their occurrence time can be identified by different methods, including the local maximum peak, maximum slope of the atrial depolarization  ... 
doi:10.5772/53407 fatcat:fr6wgn3m2vevxbluf5co3uikby

Long-Term Frequency Gradients During Persistent Atrial Fibrillation in Sheep Are Associated With Stable Sources in the Left Atrium

D. Filgueiras-Rama, N. F. Price, R. P. Martins, M. Yamazaki, U. M. R. Avula, K. Kaur, J. Kalifa, S. R. Ennis, E. Hwang, V. Devabhaktuni, J. Jalife, O. Berenfeld
2012 Circulation: Arrhythmia and Electrophysiology  
Background-Dominant frequencies (DFs) of activation are higher in the atria of patients with persistent than paroxysmal atrial fibrillation (AF), and left atrial (LA)-to-right atrial (RA) DF gradients  ...  Subsequent optical mapping confirmed a DF gradient from posterior LA-to-RA (9.1±1.0 to 6.9±0.9 Hz; P<0.05) and demonstrated patterns of activation compatible with drifting rotors in the posterior LA.  ...  The digitized ILR-based ECG signal (Supplemental Figure 6A ) is composed of a mixture of atrial and ventricular activity.  ... 
doi:10.1161/circep.111.969519 pmid:23051840 pmcid:PMC4121987 fatcat:cjylxg6q7fdrvi2qafa4qgh4zi

POSTER SESSION 3

2015 Europace  
Methods: We determined the risk of AF using a hypothesis-free, latent class clustering approach, and compared the performance with a traditional risk-factor-based AF prediction model in the community-based  ...  P821 P822 P823 P824 iii109 Downloaded from https://academic.oup.com/europace/article-abstract/17/suppl_3/iii108/2483490 by guest on 30  ...  Background: Catheter ablation based on pulmonary veins (PV) isolation has proven to be a valid technique to treat atrial fibrillation (AF).  ... 
doi:10.1093/europace/euv166 fatcat:6umwwm7ji5cnbfyc2awfvhjp4a

Colchicine for primary prevention of atrial fibrillation after open-heart surgery: Systematic review and meta-analysis

Carsten Lennerz, Manish Barman, Mahmoud Tantawy, Mark Sopher, Peter Whittaker
2017 International Journal of Cardiology  
We excluded trials focused on incidence of atrial fibrillation after percutaneous interventions or colchicine treatment of diagnosed pericarditis or post-pericardiotomy-syndrome.  ...  Prophylactic administration of colchicine may mitigate post-operative atrial fibrillation (POAF).  ...  Atrial fibrillation was diagnosed objectively either by continuous ECG monitoring or by 12-lead ECG-recording. Appendix Table 3 provides baseline patient characteristics.  ... 
doi:10.1016/j.ijcard.2017.08.039 pmid:28918897 fatcat:xl7bm46psjdjdaqxffww3ziqpi

Association Between Atrial Fibrillation and Silent Cerebral Infarctions

Shadi Kalantarian, Hakan Ay, Randy L. Gollub, Hang Lee, Kallirroi Retzepi, Moussa Mansour, Jeremy N. Ruskin
2014 Annals of Internal Medicine  
Atrial fibrillation (AF) is a common cause of stroke.  ...  Atrial fibrillation is associated with more than a 2-fold increase in the odds for SCI. Deane Institute for Integrative Research in Atrial Fibrillation and Stroke, Massachusetts General Hospital.  ...  ., MD, MPH, from the University of Washington, Seattle, Washington, and Tsukasa Saito, MD, PhD, from Asahikawa Medical University, Hokkaido, Japan, for providing additional data from their published studies  ... 
doi:10.7326/m14-0538 pmid:25364886 pmcid:PMC5578742 fatcat:3qa46u4dcfdwnhkjfxn2dxkksm

2021 ISHNE/HRS/EHRA/APHRS collaborative statement on mHealth in Arrhythmia Management: Digital Medical Tools for Heart Rhythm Professionals

Niraj Varma, Iwona Cygankiewicz, Mintu Turakhia, Hein Heidbuchel, Yufeng Hu, Lin Yee Chen, Jean‐Philippe Couderc, Edmond M. Cronin, Jerry D. Estep, Lars Grieten, Deirdre A. Lane, Reena Mehra (+12 others)
2021 Journal of Arrhythmia  
The facilitation of comorbidity and lifestyle management (increasingly recognized to play a role in heart rhythm disorders) and patient self-management are novel aspects of mHealth.  ...  This collaborative statement from the International Society for Holter and Noninvasive Electrocardiology/Heart Rhythm Society/European Heart Rhythm Association/Asia Pacific Heart Rhythm Society describes  ...  Effect of a home-based wearable continuous ECG Monitoring patch on detection of undiagnosed atrial fibrillation: The mSToPS randomized clinical trial.  ... 
doi:10.1002/joa3.12461 pmid:33850572 pmcid:PMC8022003 fatcat:exfxdxrszzbovgyw37cwiheohu

Ablation procedures for rhythm control in patients with atrial fibrillation: clinical and cost-effectiveness analyses

N Assasi, G Blackhouse, F Xie, K Gaebel, D Robertson, R Hopkins, J Healey, D Roy, R Goeree
2012 Technology overview  
Relevant data were extracted from the texts, and in some cases, data were extracted from the figures. The data abstraction was performed by two independent reviewers.  ...  The costs were based on 2004 US$. The analysis was taken from a societal perspective with a lifelong time horizon.  ...   A minimally invasive ablation procedure which convert AF to normal sinus rhythm (include)  A minimally invasive ablation procedure which controls the heart rate (AV node ablation) (exclude)  Neither  ... 
pmid:23002373 pmcid:PMC3442612 fatcat:epeekcvxzffg5lx2lxjss7m4j4

2021 ISHNE/ HRS/ EHRA/ APHRS collaborative statement on mHealth in Arrhythmia Management: Digital Medical Tools for Heart Rhythm Professionals

Niraj Varma, Iwona Cygankiewicz, Mintu Turakhia, Hein Heidbuchel, Yufeng Hu, Lin Yee Chen, Jean-Philippe Couderc, Edmond M Cronin, Jerry D Estep, Lars Grieten, Deirdre A Lane, Reena Mehra (+12 others)
2021 European Heart Journal - Digital Health  
The facilitation of comorbidity and life- style management (increasingly recognized to play a role in heart rhythm disorders) and patient self-management are novel aspects of mHealth.  ...  This collaborative statement from the International Society for Holter and Noninvasive Electrocardiology/Heart Rhythm Society/European Heart Rhythm Association/Asia Pacific Heart Rhythm Society describes  ...  Effect of a home-based wearable continuous ecg monitoring patch on detection of undiagnosed atrial fibrillation: The mSToPS randomized clinical trial.  ... 
doi:10.1093/ehjdh/ztab001 fatcat:nfdyn7emjjcdbgmwkhbl5irjuy
« Previous Showing results 1 — 15 out of 1,365 results