Download or read book Characterization of Cardiac Electrogram Signals During Atrial Fibrillation written by Prasanth Ganesan and published by . This book was released on 2015 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Atrial fibrillation (AF) is the most common cardiac arrhythmia in United States. The most popular treatment for AF is a percutaneous procedure called catheter ablation. Current AF ablation procedures unfortunately have a poor success rate, primarily because the mechanisms involved in AF are incompletely understood even today. Intra-atrial electrograms have previously been shown to provide information on the mechanisms of AF. This thesis focuses on two such mechanisms -- AF-sustaining sites known as sustained rotational activities (RotAs), and atrial tissue with unique electrical properties known as myocardial scars. Catheter ablation procedures today construct the 3D electroanatomic map of the left atrium (LA) by maneuvering a conventional Multipolar Diagnostic Catheter (MPDC) along the LA endocardial surface. These procedures are limited to pulmonary vein isolation and other linear ablation performed on various regions of the left atrium (such as roof and mitral isthmus) where the regions are decided based on the atrial anatomy. However, it remains unclear how to utilize the information provided by the MPDC to analyze and characterize the RotAs and scars. Previous electrogram characterization studies mainly use a single bipole rather than MPDCs to characterize the electrograms based on features such as cycle length or dominant frequency from the time or frequency domain. In this thesis we developed novel techniques for investigating the above mentioned mechanisms using signal analysis, mathematical modeling, numerical simulation and clinical experiments, all utilizing MPDC recordings. First, the variations in the total conduction delay (TCD) from MPDC electrograms as the MPDC moves towards a RotA source was investigated. Second, the maximum peak-to-peak amplitudes of MPDC electrograms recorded during AF and NSR were analyzed. This thesis provides insights into methods of characterization of cardiac electrograms and the findings of this thesis could address the current challenges in AF ablation."--Abstract.
Download or read book Computer aided Technologies written by Razvan Udroiu and published by BoD – Books on Demand. This book was released on 2016-12-07 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to present the latest applications, trends, and developments of computer-aided technologies (CAx). Computer-aided technologies are the core of product lifecycle management (PLM) and human lifecycle management (HUM). This book has seven chapters, organized in two sections: "Computer-Aided Technologies in Engineering" and "Computer-Aided Technologies in Medicine." The first section treats the different aspects of PLM, including design, simulations and analysis, manufacturing, production planning, and quality assurance. In the second part of the book are presented CAx applications in medicine focused on clinical decision, diagnosis, and biosensor design. CAx plays a key role in a variety of engineering and medical applications, bringing a lot of benefits in product life cycle, extending and improving human life.
Download or read book Bioelectrical Signal Processing in Cardiac and Neurological Applications written by Leif Sörnmo and published by Academic Press. This book was released on 2005-06-15 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of bioelectrical signals continues to receive wide attention in research as well as commercially because novel signal processing techniques have helped to uncover valuable information for improved diagnosis and therapy. This book takes a unique problem-driven approach to biomedical signal processing by considering a wide range of problems in cardiac and neurological applications-the two "heavyweight" areas of biomedical signal processing. The interdisciplinary nature of the topic is reflected in how the text interweaves physiological issues with related methodological considerations. Bioelectrical Signal Processing is suitable for a final year undergraduate or graduate course as well as for use as an authoritative reference for practicing engineers, physicians, and researchers. A problem-driven, interdisciplinary presentation of biomedical signal processing Focus on methods for processing of bioelectrical signals (ECG, EEG, evoked potentials, EMG) Covers both classical and recent signal processing techniques Emphasis on model-based statistical signal processing Comprehensive exercises and illustrations Extensive bibliography
Download or read book Electrocardiographic Imaging written by Maria S. Guillem and published by Frontiers Media SA. This book was released on 2020-04-17 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical activity in the myocardium coordinates the contraction of the heart, and its knowledge could lead to a better understanding, diagnosis, and treatment of cardiac diseases. This electrical activity generates an electromagnetic field that propagates outside the heart and reaches the human torso surface, where it can be easily measured. Classical electrocardiography aims to interpret the 12-lead electrocardiogram (ECG) to determine cardiac activity and support the diagnosis of cardiac pathologies such as arrhythmias, altered activations, and ischemia. More recently, a higher number of leads is used to reconstruct a more detailed quantitative description of the electrical activity in the heart by solving the so-called inverse problem of electrocardiography. This technique is known as ECG imaging. Today, clinical applications of ECG imaging are showing promising results in guiding a variety of electrophysiological interventions such as catheter ablation of atrial fibrillation and ventricular tachycardia. However, in order to promote the adoption of ECG imaging in the routine clinical practice, further research is required regarding more accurate mathematical methods, further scientific validation under different preclinical scenarios and a more extensive clinical validation
Download or read book Cardiac Mapping written by Mohammad Shenasa and published by John Wiley & Sons. This book was released on 2019-04-04 with total page 1304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The expanded guide to cardiac mapping The effective diagnosis and treatment of heart disease may vitally depend upon accurate and detailed cardiac mapping. However, in an era of rapid technological advancement, medical professionals can encounter difficulties maintaining an up-to-date knowledge of current methods. This fifth edition of the much-admired Cardiac Mapping is, therefore, essential, offering a level of cutting-edge insight that is unmatched in its scope and depth. Featuring contributions from a global team of electrophysiologists, the book builds upon previous editions' comprehensive explanations of the mapping, imaging, and ablation of the heart. Nearly 100 chapters provide fascinating accounts of topics ranging from the mapping of supraventricular and ventriculararrhythmias, to compelling extrapolations of how the field might develop in the years to come. In this text, readers will find: Full coverage of all aspects of cardiac mapping, and imaging Explorations of mapping in experimental models of arrhythmias Examples of new catheter-based techniques Access to a companion website featuring additional content and illustrative video clips Cardiac Mapping is an indispensable resource for scientists, clinical electrophysiologists, cardiologists, and all physicians who care for patients with cardiac arrhythmias.
Download or read book Catheter Ablation of Cardiac Arrhythmias written by Shoei K. Huang and published by Elsevier Health Sciences. This book was released on 2011 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: The breadth and range of the topics covered, and the consistent organization of each chapter, give you simple but detailed access to information on anatomy, diagnostic criteria, differential diagnosis, mapping, and ablation. the book includes a unique section on troubleshooting difficult cases for each arrhythmia, and the use of tables, illustrations, and high-quality figures is unmatched among publications in the field.
Download or read book Characterizing Cardiac Electrophysiology during Radiofrequency Ablation An Integrative Ex vivo In silico and In vivo Approach written by Pollnow, Stefan and published by KIT Scientific Publishing. This book was released on 2019-04-23 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atrial Fibrillation from an Engineering Perspective written by Leif Sörnmo and published by Springer. This book was released on 2018-05-15 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atrial Fibrillation from an Engineering Perspective provides an up-to-date overview of techniques developed for acquisition, modeling, and analysis of noninvasive, bioelectrical signals reflecting this common arrhythmia. Special emphasis is put on emerging technologies for monitoring of atrial fibrillation in connection with ischemic stroke, interventional ablation procedures, and pharmacological treatment, applications which all depend on the availability of techniques for detecting and characterizing episodes of paroxysmal atrial fibrillation. Detectors exploring both rhythm and morphology are described, as well as detectors confined to rhythm and better suited for low power implementation. A wide variety of approaches to modeling and characterization of atrial activity are described, emanating from a statistical and deterministic starting points. This book is suitable for graduate students, researchers, and engineers who want a comprehensive treatise of atrial fibrillation from an engineering perspective. It may be used for self-study, as a supplement to courses in signal processing, or as a modern monograph by researchers in the field of atrial fibrillation.
Download or read book Advances in Atrial Fibrillation Ablation An Issue of Cardiac Electrophysiology Clinics written by Luigi Di Biase and published by Elsevier Health Sciences. This book was released on 2020-07-16 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: In collaboration with the Consulting Editors, Ranjan K. Thakur and Andrea Natale, Drs. Luigi Di Biase, Frank Marchlinski, and Andrea Natale have assembled an issue of Cardiac Electrophysiology Clinics on Advances in Atrial Fibrillation Ablation. Topics include, but are not limited to, Recurrent atrial fibrillation with isolated PVs, Beyond PVI in non paroxysmal atrial fibrillation, Recurrent atrial fibrillation after cryo, Recurrent atrial fibrillation after RF, high-density mapping, Expectation and Results of surrogate target beyond PVI, Lessons from epicardial mapping and ablation in refractory atrial fibrillation, Evolution of radiofrequency ablation parameters, Balloon based technologies, Energy sources, Current status of esophageal protection, Fluoroless atrial fibrillation ablation, Role of MRI imaging before and after ablation, When to stop OAC after atrial fibrillation ablation, Atrial fibrillation ablation trials, Risk Factor modification before and after atrial fibrillation ablation.
Download or read book Non Vitamin K Antagonist Oral Anticoagulants written by Eduard Shantsila and published by Springer. This book was released on 2015-12-21 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an essential guide to the medical treatment of thrombosis and presents core principles of anticoagulant therapeutics as well as drug recommendations. Written by recognized experts in the field, this concise, accessible handbook provides a unique and valuable resource in the cardiovascular field, both for those currently in training, and for those already in clinical or research practice.
Download or read book Computational Methods in Cardiac Electrophysiology written by Matthijs Cluitmans and published by Frontiers Media SA. This book was released on 2023-07-06 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Multiscale In Silico Study to Characterize the Atrial Electrical Activity of Patients With Atrial Fibrillation A Translational Study to Guide Ablation Therapy written by Sánchez Arciniegas, Jorge Patricio and published by KIT Scientific Publishing. This book was released on 2022-05-30 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atrial substrate undergoes electrical and structural remodeling during atrial fibrillation. Detailed multiscale models were used to study the effect of structural remodeling induced at the cellular and tissue levels. Simulated electrograms were used to train a machine-learning algorithm to characterize the substrate. Also, wave propagation direction was tracked from unannotated electrograms. In conclusion, in silico experiments provide insight into electrograms' information of the substrate.
Download or read book Practical Cardiac Electrophysiology written by Kartikeyan Bhargava and published by JP Medical Ltd. This book was released on 2016-11-30 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrophysiology studies test the electrical activity of the heart to determine the source of an arrhythmia. This book is a comprehensive guide to cardiac electrophysiology providing a thorough understanding of the mechanisms of arrhythmias and therapeutic interventions used in their treatment. Beginning with an introduction to cardiac electrophysiology and the fundamentals of cardiac anatomy, imaging, mapping and ablation, the following sections cover the diagnosis and management of different types of arrhythmia. The final section discusses miscellaneous topics including entrainment, provocative drug testing in the electrophysiology lab, and catheter ablation in children. The book is highly illustrated with nearly 300 images and tables and each chapter concludes with a summary highlighting the main points of the topic and offers suggestions for further reading. Key points Comprehensive guide to diagnosis and treatment of cardiac arrhythmias Provides thorough overview of cardiac anatomy, imaging, mapping and ablation Includes other topics such as provocative drug testing and catheter ablation in children Highly illustrated with nearly 300 images and tables
Download or read book Artificial Intelligence in Heart Modelling written by Rafael Sebastian and published by Frontiers Media SA. This book was released on 2022-05-11 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Understanding the Basic Mechanisms of Atrial Fibrillation Using Novel Computational Approaches written by Jichao Zhao and published by Frontiers Media SA. This book was released on 2019-11-25 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catheter Ablation of Atrial Fibrillation written by Etienne Aliot and published by John Wiley & Sons. This book was released on 2011-08-31 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catheter Ablation of Atrial Fibrillation Edited by Etienne Aliot, MD, FESC, FACC, FHRS Chief of Cardiology, Hôpital Central, University of Nancy, France Michel Haïssaguerre, MD Chief of Electrophysiology, Hôpital Cardiologique du Haut-Lévêque, France Warren M. Jackman, MD Chief of Electrophysiology, University of Oklahoma Health Science Center, USA In this text, internationally recognized authors explore and explain the advances in basic and clinical electrophysiology that have had the greatest impact on catheter ablation of atrial fibrillation (AF). Designed to assist in patient care, stimulate research projects, and continue the remarkable advances in catheter ablation of AF, the book covers: the fundamental concepts of AF, origin of signals, computer simulation, and updated reviews of ablation tools the present practical approaches to the ablation of specific targets in the fibrillating atria, including pulmonary veins, atrial neural network, fragmented electrograms, and linear lesions, as well as the strategies in paroxysmal or chronic AF or facing left atrial tachycardias the special challenge of heart failure patients, the impact of ablation on mortality, atrial mechanical function, and lessons from surgical AF ablation Richly illustrated by numerous high-quality images, Catheter Ablation of Atrial Fibrillation will help every member of the patient care team.
Download or read book Clinical Arrhythmology and Electrophysiology E Book written by Ziad Issa and published by Elsevier Health Sciences. This book was released on 2018-08-07 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of the highly regarded Braunwald’s family of cardiology references, Clinical Arrhythmology and Electrophysiology, 3rd Edition, offers complete coverage of the latest diagnosis and management options for patients with arrhythmias. Expanded clinical content and clear illustrations keep you fully abreast of current technologies, new syndromes and diagnostic procedures, new information on molecular genetics, advances in ablation, and much more.
