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Recent Advances In Understanding The Basic Mechanisms Of Atrial Fibrillation Using Novel Computational Approaches
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Book Synopsis Recent Advances in Understanding the Basic Mechanisms of Atrial Fibrillation Using Novel Computational Approaches by : Jichao Zhao
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:
Book Synopsis Understanding Atrial Fibrillation by : Luca Mainardi
Download or read book Understanding Atrial Fibrillation written by Luca Mainardi and published by Springer Nature. This book was released on 2022-05-31 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents recent advances in signal processing techniques for modeling, analysis, and understanding of the heart's electrical activity during atrial fibrillation. This arrhythmia is the most commonly encountered in clinical practice and its complex and metamorphic nature represents a challenging problem for clinicians, engineers, and scientists. 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. This book provides undergraduate and graduate students, as well as researchers and practicing engineers, with an overview of techniques, including time domain techniques for atrial wave extraction, time-frequency analysis for exploring wave dynamics, and nonlinear techniques to characterize the ventricular response and the organization of atrial activity. The book includes an introductory chapter about atrial fibrillation and its mechanisms, treatment, and management. The successive chapters are dedicated to the analysis of atrial signals recorded on the body surface and to the quantification of ventricular response. The rest of the book explores techniques to characterize endo- and epicardial recordings and to model atrial conduction. 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 is a unique challenge for developing and testing novel signal processing tools. Table of Contents: Part I / Introduction to Atrial Fibrillation: From Mechanisms to Treatment / Time Domain Analysis of Atrial Fibrillation / Atrial Activity Extraction from the ECG / Time-Frequency Analysis of Atrial Fibrillation
Book Synopsis Understanding Atrial Fibrillation by : Luca Mainardi
Download or read book Understanding Atrial Fibrillation written by Luca Mainardi and published by Springer Nature. This book was released on 2022-05-31 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents recent advances in signal processing techniques for modeling, analysis, and understanding of the heart's electrical activity during atrial fibrillation. This arrhythmia is the most commonly encountered in clinical practice and its complex and metamorphic nature represents a challenging problem for clinicians, engineers, and scientists. 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. This book provides undergraduate and graduate students, as well as researchers and practicing engineers, with an overview of techniques, including time domain techniques for atrial wave extraction, time-frequency analysis for exploring wave dynamics, and nonlinear techniques to characterize the ventricular response and the organization of atrial activity. The book includes an introductory chapter about atrial fibrillation and its mechanisms, treatment, and management. The successive chapters are dedicated to the analysis of atrial signals recorded on the body surface and to the quantification of ventricular response. The rest of the book explores techniques to characterize endo- and epicardial recordings and to model atrial conduction. 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 is a unique challenge for developing and testing novel signal processing tools. Table of Contents: Analysis of Ventricular Response During Atrial Fibrillation / Organization Measures of Atrial Activity During Fibrillation / Modeling Atrial Fibrillation: From Myocardial Cells to ECG / Algorithms for Atrial Tachyarrythmia Detection for Long-Term Monitoring with Implantable Devices
Book Synopsis Applying Computational Approaches to the Understanding of the Consequences and Opportunities of Ion Channel Properties in Atrial Fibrillation by : Martin Aguilar
Download or read book Applying Computational Approaches to the Understanding of the Consequences and Opportunities of Ion Channel Properties in Atrial Fibrillation written by Martin Aguilar and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac arrhythmias are disorders of the electrical system of the heart and an often clinically-challenging group of disorders. Atrial fibrillation (AF) is the most common cardiac arrhythmia in the general population; it is associated with significant morbidity and mortality. Available antiarrhythmic drugs (AADs) for the treatment of AF are older molecules with sub- optimal efficacy and safety profiles. Recent advances in basic electrophysiology and the development of sophisticated mathematical modeling approaches could help in expanding our understanding of the basic mechanisms of AF and assist in the development of novel AF- selective AADs. The purpose of this thesis was to utilize computational approaches to the understanding of the consequences and opportunities of ion channel properties, with a special emphasis on AF. The cardiac action potential is the basic functional unit of the electrical system of the heart and is the manifestation of coordinated current fluxes through specialized proteins known as ion channels. Antiarrhythmic drugs act through modulation of ion channel properties. We hypothesized that mathematical modeling could be used to study and optimize the pharmacodynamic properties of AADs for the treatment of AF. We demonstrated that the pharmacodynamic properties (binding/unbinding characteristics) of a state-dependent Na+- channel blocker modulate the drug's anti-/proarrhythmic actions with inactivated-state blockers being optimally AF-selective. The optimized drug's selectivity for AF was the result of its rate- selectivity (stronger effects at fast vs slow cardiomyocyte activation rates) with relatively mild atrial-selective (stronger effects in atrial vs ventricular cardiomyocytes) actions. We found that the optimally AF-selective Na+-channel blocker had sub-optimal anti-AF efficacy, but that slightly less selective drugs had favorable AF-termination rates. We then sought to explore potential current-block combinations with synergistic AF- selective properties. Using mathematical modeling and laboratory experiments, we demonstrated that the combination of optimized state-dependent Na+-channel block and K+- channel block had synergistic effects, significantly augmenting AF termination rates for any level of AF-selectivity vs pure Na+-channel block. The mechanisms of these synergistic effects were found to be mediated by the functional interaction between the action potential prolonging- v effects of K+-channel block, the Na+-channel blocker's voltage-dependent binding/unbinding properties and the Na+ channel's inactivation characteristics, highlighting the non-linear nature of the cardiac action potential's dynamics. Traditional K+ currents targeted by AADs have significant ventricular proarrhythmic liabilities. Using recent experimental observations, we updated the mathematic formulation for the inactivation dynamics of the ultra-rapid delayed-rectifier K+ current (IKur), an atrial-specific current. Using this model, we showed that, contrary to what had been proposed in the published literature, IKur rate-dependent properties are mediated by its activation properties with minimal contribution from inactivation, under physiological conditions. We also demonstrated that the contribution of IKur to action potential repolarization is preserved, or even increased, in the setting of electrical remodeling-induced IKur downregulation. Finally, we described the mechanisms of the forward rate-dependent of IKur block, mediated by functional non-linear interactions with the rapid delayed inward-rectifier K+ current (IKr), the only K+ current with such properties. Until recently, fibroblasts were considered to be electrically inactive. More recently, experimental work demonstrated the presence of functional ionic current on the fibroblast and possible cardiomyocyte-fibroblast coupling. Here, we described a novel kind of heart failure- induced electrical remodeling involving the fibroblasts ion channels. This was characterized by downregulation of the fibroblast voltage-dependent K+ current (IKv,fb) and upregulation of the fibroblast inward-rectifier K+ current (IKir,fb). We then implemented our experimental findings into a mathematical model of cardiomyocyte-fibroblast coupling and found fibroblast electrical remodeling to have significant effects on the cardiomyocyte's electrophysiological properties. In a 2-dimension model of simulated AF, downregulation of IKv,fb had an antiarrhythmic effect whereas IKir,fb upregulation was found to be proarrhythmic. The studies presented here utilized mathematical modeling to study non-linear systems in cardiac electrophysiology to tackle questions that would have been difficult to approach with traditional laboratory-based experimentation. They also showcased how theoretical results can help orient and receive confirmation with subsequent experimental work or, conversely, novel experimental findings results be implemented into a mathematical model to investigate potential consequences. Mathematical modeling is a promising tool to help in studying the complex and vi non-linear effects of pharmacological modulation of ion channel properties and assist in the development of optimized antiarrhythmics for the treatment of AF, a major unmet need in clinical medicine. As models increase in sophistication to better represent the cardiomyocyte's electrophysiology, they will almost certainly play an ever-growing role in expanding our understanding of the mechanisms of complex arrhythmias.
Book Synopsis Understanding Atrial Fibrillation by : Luca Mainardi
Download or read book Understanding Atrial Fibrillation written by Luca Mainardi and published by Morgan & Claypool Publishers. This book was released on 2008-12-05 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents recent advances in signal processing techniques for modeling, analysis, and understanding of the heart's electrical activity during atrial fibrillation. This arrhythmia is the most commonly encountered in clinical practice and its complex and metamorphic nature represents a challenging problem for clinicians, engineers, and scientists. 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. This book provides undergraduate and graduate students, as well as researchers and practicing engineers, with an overview of techniques, including time domain techniques for atrial wave extraction, time-frequency analysis for exploring wave dynamics, and nonlinear techniques to characterize the ventricular response and the organization of atrial activity. The book includes an introductory chapter about atrial fibrillation and its mechanisms, treatment, and management. The successive chapters are dedicated to the analysis of atrial signals recorded on the body surface and to the quantification of ventricular response. The rest of the book explores techniques to characterize endo- and epicardial recordings and to model atrial conduction. 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 is a unique challenge for developing and testing novel signal processing tools. Table of Contents: Analysis of Ventricular Response During Atrial Fibrillation / Organization Measures of Atrial Activity During Fibrillation / Modeling Atrial Fibrillation: From Myocardial Cells to ECG / Algorithms for Atrial Tachyarrythmia Detection for Long-Term Monitoring with Implantable Devices
Book Synopsis Understanding Atrial Fibrillation by : Peter Spector
Download or read book Understanding Atrial Fibrillation written by Peter Spector and published by Wiley-Blackwell. This book was released on 2019-08-02 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new guide to the mechanisms and principles behind the world's most common abnormal heart rhythm Affecting 30 million or more people across the globe, atrial fibrillation is one of the most prevalent - and yet misapprehended - issues facing modern cardiology. Its potential causes and optimal treatment strategies are matters of some conjecture in the medical community, where ongoing research has yielded findings that can prove challenging to those not familiar with the complex physiology at the root of the condition. Recognizing these concerns, distinguished electrophysiologist Peter Spector has designed Understanding Atrial Fibrillation as a means by which to equip clinicians with the data and analytic tools needed to develop a better grasp of this arrhythmia's full nature. The book begins by providing a detailed explanation of atrial fibrillation's causal mechanisms and builds its exploration from there. Working toward an up-to-date knowledge of the mapping and ablation of atrial fibrillation, its chapters assess the experimental data that has shaped current thoughts on the condition and then outline the best methods with which to interpret that rich but potentially difficult information. This revelatory new guide: Explores hypotheses of multiple drivers and mechanisms co-existing in individual patients Addresses common misperceptions and inaccurate views about atrial fibrillation Describes the basic physiology of atrial fibrillation's propagation and reentry Explores the various mechanisms and higher-order dynamics of fibrillation Discusses how to intervene and alter atrial physiology to prevent fibrillation Understanding Atrial Fibrillation is truly an invaluable resource for physicians, fellows, residents, electrophysiology lab staff, and all other practitioners involved in the diagnosis and treatment of atrial fibrillation.
Book Synopsis Exploring Mechanisms of Cardiac Rhythm Disturbances Using Novel Computational Methods: Prediction, Classification, and Therapy by : Xin Li
Download or read book Exploring Mechanisms of Cardiac Rhythm Disturbances Using Novel Computational Methods: Prediction, Classification, and Therapy written by Xin Li and published by Frontiers Media SA. This book was released on 2023-03-16 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diagnosis, Monitoring, and Treatment of Heart Rhythm: New Insights and Novel Computational Methods by : Jieyun Bai
Download or read book Diagnosis, Monitoring, and Treatment of Heart Rhythm: New Insights and Novel Computational Methods written by Jieyun Bai and published by Frontiers Media SA. This book was released on 2023-09-13 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atrial Fibrillation: Technology for Diagnosis, Monitoring, and Treatment by : Jose F. Rodriguez Matas
Download or read book Atrial Fibrillation: Technology for Diagnosis, Monitoring, and Treatment written by Jose F. Rodriguez Matas and published by Frontiers Media SA. This book was released on 2022-03-15 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrocardiographic Imaging by : Maria S. Guillem
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
Book Synopsis Molecular Mechanism of Congenital Heart Disease and Pulmonary Hypertension by : Toshio Nakanishi
Download or read book Molecular Mechanism of Congenital Heart Disease and Pulmonary Hypertension written by Toshio Nakanishi and published by Springer Nature. This book was released on 2020-02-28 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book focuses on the molecular mechanism of congenital heart disease and pulmonary hypertension, offering new insights into the development of pulmonary circulation and the ductus arteriosus. It describes in detail the molecular mechanisms involved in the development and morphogenesis of the heart, lungs and ductus arteriosus, covering a range of topics such as gene functions, growth factors, transcription factors and cellular interactions, as well as stem cell engineering technologies. The book also presents recent advances in our understanding of the molecular mechanism of lung development, pulmonary hypertension and molecular regulation of the ductus arteriosus. As such, it is an ideal resource for physicians, scientists and investigators interested in the latest findings on the origins of congenital heart disease and potential future therapies involving pulmonary circulation/hypertension and the ductus arteriosus.
Book Synopsis Recent Advances in Cardiotoxicity Testing by : Tamer M. A. Mohamed
Download or read book Recent Advances in Cardiotoxicity Testing written by Tamer M. A. Mohamed and published by Frontiers Media SA. This book was released on 2022-01-05 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods and Applications: Computational Genomics by : Guanglin Li
Download or read book Methods and Applications: Computational Genomics written by Guanglin Li and published by Frontiers Media SA. This book was released on 2022-07-28 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :European Society of Cardiology Publisher :Oxford University Press, USA ISBN 13 :0199566992 Total Pages :1423 pages Book Rating :4.1/5 (995 download)
Book Synopsis The ESC Textbook of Cardiovascular Medicine by : European Society of Cardiology
Download or read book The ESC Textbook of Cardiovascular Medicine written by European Society of Cardiology and published by Oxford University Press, USA. This book was released on 2009-08-27 with total page 1423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following the structure and format of the ESC core syllabus, this text introduces key concepts in the field of cardiovascular medicine.
Book Synopsis Zipes and Jalife's Cardiac Electrophysiology: From Cell to Bedside, E-Book by : Jose Jalife
Download or read book Zipes and Jalife's Cardiac Electrophysiology: From Cell to Bedside, E-Book written by Jose Jalife and published by Elsevier Health Sciences. This book was released on 2021-12-16 with total page 1709 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated from cover to cover, Zipes and Jalife's Cardiac Electrophysiology: From Cell to Bedside, 8th Edition, provides the comprehensive, multidisciplinary coverage you need—from new knowledge in basic science to the latest clinical advances in the field. Drs. José Jalife and William Gregory Stevenson lead a team of global experts who provide cutting-edge content and step-by-step instructions for all aspects of cardiac electrophysiology. - Packs each chapter with the latest information necessary for optimal basic research as well as patient care. - Covers new technologies such as CRISPR, protein research, improved cardiac imaging, optical mapping, and wearable devices. - Contains significant updates in the areas of molecular biology and genetics, iPSCs (induced pluripotent stem cells), embryonic stem cells, precision medicine, antiarrhythmic drug therapy, cardiac mapping with advanced techniques, and ablation technologies including stereotactic radioablation. - Includes 47 new chapters covering both basic science and clinical topics. - Discusses extensive recent progress in the understanding, diagnosis, and management of arrhythmias, including new clinical insights on atrial fibrillation and stroke prevention, new advances in the understanding of ventricular arrythmias in genetic disease, and advances in implantable devises and infection management. - Features 1,600 high-quality photographs, anatomic and radiographic images, electrocardiograms, tables, algorithms, and more., with additional figures, tables, and videos online. - Recipient of a 2018 Highly Commended award from the British Medical Association. - Enhanced eBook version included with purchase. Your enhanced eBook allows you to access all of the text, figures, and references from the book on a variety of devices.
Download or read book Encyclopedia of Cell Biology written by and published by Academic Press. This book was released on 2015-08-07 with total page 2972 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Cell Biology, Four Volume Set offers a broad overview of cell biology, offering reputable, foundational content for researchers and students across the biological and medical sciences. This important work includes 285 articles from domain experts covering every aspect of cell biology, with fully annotated figures, abundant illustrations, videos, and references for further reading. Each entry is built with a layered approach to the content, providing basic information for those new to the area and more detailed material for the more experienced researcher. With authored contributions by experts in the field, the Encyclopedia of Cell Biology provides a fully cross-referenced, one-stop resource for students, researchers, and teaching faculty across the biological and medical sciences. Fully annotated color images and videos for full comprehension of concepts, with layered content for readers from different levels of experience Includes information on cytokinesis, cell biology, cell mechanics, cytoskeleton dynamics, stem cells, prokaryotic cell biology, RNA biology, aging, cell growth, cell Injury, and more In-depth linking to Academic Press/Elsevier content and additional links to outside websites and resources for further reading A one-stop resource for students, researchers, and teaching faculty across the biological and medical sciences
Book Synopsis Goldman-Cecil Medicine E-Book by : Lee Goldman
Download or read book Goldman-Cecil Medicine E-Book written by Lee Goldman and published by Elsevier Health Sciences. This book was released on 2015-04-21 with total page 4123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1927, Goldman-Cecil Medicine has been the world’s most influential internal medicine resource. In the ground-breaking 25th edition, your original purchase ensures you will be up-to-date without the need for a subscription. Through the new, more powerful Expert Consult eBook platform, this "living text" provides continuous updates that will integrate the latest research, guidelines, and treatments into each chapter, ensuring that the content is as current as the day this edition was first published. Goldman-Cecil Medicine offers definitive, unbiased guidance on the evaluation and management of every medical condition, presented by a veritable "Who's Who" of modern medicine. A practical, straightforward style; templated organization; evidence-based references; and robust interactive content combine to make this dynamic resource quite simply the fastest and best place to find all of the authoritative, state-of-the-art clinical answers you need. Expert Consult eBook version included with print purchase: Access continuous updates from Editor Lee Goldman, MD, who thoroughly reviews internal medicine and specialty journals, updating online content to reflect the latest guidelines and translating that evidence into treatment. Interactive Q&A section features over 1,500 board-style questions and answers to aid in preparing for certification or recertification exams. Outstanding supplementary tools include figures, tables, videos, heart and lung sounds, treatment and management algorithms, fully integrated references, and thousands of illustrations and full-color photos. Search all of the text, figures, supplementary material, and references from the book on a variety of devices and at no additional cost — Expert Consult access is included with this title! Practical, bulleted, highly templated text with easy-to-use features including flow charts and treatment boxes. New chapters on global health, cancer biology and genetics, and the human microbiome in health and disease keep you on the cutting edge of medicine. Today's most current evidence-based medicine guidelines help you form a definitive diagnosis and create the best treatment plans possible. Focused coverage of the latest developments in biology includes the specifics of current diagnosis, therapy, and medication doses. The reference of choice for every stage of your career! Goldman-Cecil Medicine is an ideal learning tool for residents, physicians, and students as well as a valuable go-to resource for experienced healthcare professionals.
