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Cardiac Dynamics
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Download or read book Cardiac Dynamics written by J. Baan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac Dynamics is the name of a relatively young field of study, born from the fruitful interaction between branches of two different disciplines: medicine and physics. "Dynamics" is the branch of physics which deals with the action of forces on bodies or particles in motion or at rest. "Cardiac" relates to the clinical field of cardiology but also to cardiophysiology, both of which are specialized branches of medicine. Narrower than the well established field of Hemodynamics, Cardiac Dynamics is restricted to dynamic phenomena occurring in and around the heart. The mathematical treatment of such phenomena, however, is vastly more complex because of the intricate nature of the mechanisms involved in the cardiac action. Thus, whereas hemodynamics is concerned with predominantly passive (visco-) elastic structures - vessels - containing time-variant flow of viscous flui- blood -, the mechanical study of the heart requires additional con siderations such as: active elastic components representing the contractile mechanism of cardiac muscle, complex geometry and fiber structure in the myocardial wall, autoregulatory mechanisms, and intricate flow patterns associated with valve motion. Viewed in this light it is not surprising that attempts to describe ventricular pump function and to quantify contractile performance have not reached the level of sophistication which is common in e. g. arterial hemodynamics. For the same reason, many of the often simplified approaches to describe ventricular mechanics failed to stand up to more rigorous theoretical, experimental or clinical testing.
Book Synopsis Brain and Heart Dynamics by : Stefano Govoni
Download or read book Brain and Heart Dynamics written by Stefano Govoni and published by Springer. This book was released on 2020-07-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ambitious and comprehensive handbook represents an essential contribution to our current understanding of interactions between heart and brain, a research topic generating growing interest. Despite the increasing awareness that neural mechanisms are the primary cause of cardiac disease and its progression, therapy continues to focus on end-organ protection and does not approach the neural core of the problem. Growing public health problems such as heart failure are still treated with autonomic drugs that are 30-40 years old and simply act on cardiac receptors. However, it has now been shown that the progression of ischemic heart disease to heart failure is mainly due to abnormal central responses to incipient cardiac disease, with neural activation the primary cause rather than the consequence of cardiac remodeling. Written by leading international experts in their respective research areas, the book presents a variety of perspectives on the core topic: from social and philosophical to gender-related aspects. It is designed for a broad readership and includes dedicated sections for cardiologists, psychiatrists, neurologists and psychotherapists looking for a more insightful and targeted approach to neuro-cardiovascular disease.
Book Synopsis Cardiovascular Dynamics by : Robert Frazer Rushmer
Download or read book Cardiovascular Dynamics written by Robert Frazer Rushmer and published by Saunders Limited.. This book was released on 1970 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory of Heart written by Leon Glass and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years there has been a growth in interest in studying the heart from the perspective of the physical sciences: mechanics, fluid flow, electromechanics. This volume is the result of a workshop held in July 1989 at the Institute for Nonlinear Sciences at the University of California at San Diego that brought together scientists and clinicians with graduate students and postdoctoral fellows who shared an interest in the heart. The chapters were prepared by the invited speakers as didactic reviews of their subjects but also include the structure, mechanical properties, and function of the heart and the myocardium, electrical activity of the heart and myocardium, and mathematical models of heart function.
Book Synopsis Complex Structure and Dynamics of the Heart by : Philip Bittihn
Download or read book Complex Structure and Dynamics of the Heart written by Philip Bittihn and published by Springer. This book was released on 2014-12-27 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This award-winning thesis investigates the mechanisms underlying cardiac arrhythmia development and termination from an entirely new perspective. By viewing the heart as a complex system, the author uses theoretical tools from nonlinear dynamics combined with numerical simulations and experiments to achieve insights into the relationship between its structure and dynamics, thereby paving the way towards innovative low-energy defibrillation strategies. The work tackles, among other things: the effect of substrate heterogeneity on the spatial-temporal dynamics of cardiac arrhythmias and ways in which weak pulsed electric fields can be used to control these dynamics in heterogeneous cardiac tissue. The long-term vision of this research is to replace the current strategy of applying painful and sometimes tissue damaging electric shock – currently the only reliable way to terminate life-threatening fibrillation – by a more subtle but equally effective intervention. The book maps out a number of promising research directions for biophysicists and medical researchers working on the origins and treatment of cardiac arrhythmias.
Book Synopsis Circulatory System Dynamics by : Abraham Noordergraaf
Download or read book Circulatory System Dynamics written by Abraham Noordergraaf and published by Elsevier. This book was released on 2012-12-02 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Circulatory System Dynamics reviews cardiovascular dynamics from the analytical viewpoint and indicates ways in which the accumulated knowledge can be expanded and applied to further enhance understanding of the normal mammalian circulation, to ascertain the nature of difficulties associated with disease, and to test the effect of treatment. Comprised of 10 chapters, this volume begins with an overview of the circulatory system, including its anatomy and the trigger for myocardial (heart muscle) contraction. The discussion then turns to measurement of blood pressure using invasive and non-invasive techniques; blood flow measurement, with emphasis on cardiac output and measurement in the microcirculation; the system and pulmonary arterial trees; and pulsatile pressure and flow in pulmonary veins. Subsequent chapters explore microcirculation and the anatomy of the microvasculature; the heart and coronary circulation, paying particular attention to the Frank-Starling mechanism and indices of myocardial "contractility"; and control of blood pressure, peripheral resistance, and cerebral flow. The last two chapters deal with circulatory assistance and the closed cardiovascular system. This book will be of interest to students, practitioners, and researchers in fields ranging from physiology and biology to biochemistry and biophysics.
Book Synopsis Cardiovascular System Dynamics by : T. Kenner
Download or read book Cardiovascular System Dynamics written by T. Kenner and published by Springer. This book was released on 2013-11-09 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Regulation of Cardiac Contractility by : R. John Solaro
Download or read book Regulation of Cardiac Contractility written by R. John Solaro and published by Biota Publishing. This book was released on 2011-04-01 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contractility describes the relative ability of the heart to eject a stroke volume (SV) at a given prevailing afterload (arterial pressure) and preload (end-diastolic volume; EDV). Various measures of contractility are related to the fraction as the SV/EDV or the ejection fraction, and the dynamics of ejection as determined from maximum pressure rise in the ventricles or arteries or from aortic flow velocities determined by echocardiography. At the cellular level, the ultimate determinant of contractility is the relative tension generation and shortening capability of the molecular motors (myosin cross-bridges) of the sarcomeres as determined by the rates and extent of Ca activation, the turnover kinetics of the cross-bridges, and the relative Ca responsiveness of the sarcomeres. Engagement of the regulatory signaling cascades controlling contractility occurs with occupancy and signal transduction by receptors for neurohumors of the autonomic nervous system as well as growth and stress signaling pathways. Contractility is also determined by the prevailing conditions of pH, temperature, and redox state. Short-term control of contractility is fully expressed during exercise. In long-term responses to stresses on the heart, contractility is modified by cellular remodeling and altered signaling that may compensate for a time but which ultimately may fail, leading to disorders.
Book Synopsis Cardiovascular Fluid Dynamics by : D.H. Bergel
Download or read book Cardiovascular Fluid Dynamics written by D.H. Bergel and published by Elsevier. This book was released on 2012-12-02 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiovascular Fluid Dynamics, Volume 1 explores some problems and concepts of mammalian cardiovascular function, with emphasis on experimental studies and methods. It considers pressure measurement in experimental physiology, including the measurements of pulsatile flow, flow velocity, lengths, and dimensions; the use of control theory and systems analysis in cardiovascular dynamics; the application of computer models in cardiovascular research; the meaning and measurement of myocardial contractility; and the consequences of the steady-state analysis of arterial function. Organized into 10 chapters, this volume begins with an overview of the mammalian cardiovascular system and the essential features of cardiovascular function. It then discusses the practical problems associated with the use of pressure transducers in physiological and cardiac laboratories, the challenges involved in pulsatile flow measurement using flowmeters and thermal devices, and the mechanical analysis of the circulatory system. It explains some computer modeling techniques used in investigating the hemodynamics of the cardiovascular system, including the heart and heart muscle; basic concepts of muscle mechanics and the mechanical properties of cardiac muscle; the fluid mechanics of heart valves; and the pressure and flow in large arteries. The book concludes with a chapter on vascular resistance and vascular input impedance. This book is intended for biologists, physical scientists, and others interested in cardiovascular physiology.
Book Synopsis Dynamics Of The Vascular System: Interaction With The Heart (Second Edition) by : Li John K-j
Download or read book Dynamics Of The Vascular System: Interaction With The Heart (Second Edition) written by Li John K-j and published by World Scientific. This book was released on 2018-09-05 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of the book was written employing mathematical techniques to formulate the physical principles involved in the structural and functional correlates of the underlying physiology.This current and self-contained second edition updates many of the new findings since its first edition a decade ago. It also includes a new chapter on the 'Interaction with the Heart'. The dynamics of the arterial system, the venous system, the microcirculation and their interaction with the heart are quantitatively described in terms of their structures and functions. Clinical measurements, applications to the cardiovascular field and physiological mechanisms are clearly identified throughout the text. Most importantly, worked examples are provided, such that the readers can appreciate the application aspects of the underlying formulation.
Book Synopsis Basic and Clinical Aspects of Cardiac Dynamics by : Jan Baan
Download or read book Basic and Clinical Aspects of Cardiac Dynamics written by Jan Baan and published by Elsevier Science & Technology. This book was released on 1978 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Topics in Image Processing Techniques in Cardiac Dynamics by : Michiyoshi Kuwahara
Download or read book Topics in Image Processing Techniques in Cardiac Dynamics written by Michiyoshi Kuwahara and published by CRC Press. This book was released on 1988 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Model of Action Potential Replicates Cardiac Dynamics at Rapid Heart Rates and Provides Therapeutic Strategies for Ventricular Fibrillation by : Aman Mahajan
Download or read book A New Model of Action Potential Replicates Cardiac Dynamics at Rapid Heart Rates and Provides Therapeutic Strategies for Ventricular Fibrillation written by Aman Mahajan and published by . This book was released on 2006 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparative Cardiovascular Dynamics of Mammals by : John K-J Li
Download or read book Comparative Cardiovascular Dynamics of Mammals written by John K-J Li and published by CRC Press. This book was released on 1995-12-05 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparative Cardiovascular Dynamics of Mammals offers never-before-published data on the structure and function of the circulatory systems of the different mammalian species. This text explores classic allometry, dimensional analysis, and modern hemodynamics to establish similarity principles that provide a necessary and important step in understanding the natural common design and functional features of the cardiovascular systems of different mammals. Fluid and blood vessel mechanics, pulse transmission characteristics, cardiac energetics and mechanics, as well as heart-arterial system interaction are included in this essential reference. The sensitivity of parameters and similarity of principles in the diagnosis of cardiovascular diseases are also addressed. This book also describes the natural processes involved in the functional development of the mammalian cardiovascular system. By using modern methods to present recent findings on the similarities and differences of the mammalian cardiovascular system, the author provides an easily understood approach to this dynamic field of study.
Book Synopsis Cardiac Output and Regional Flow in Health and Disease by : A-M. Salmasi
Download or read book Cardiac Output and Regional Flow in Health and Disease written by A-M. Salmasi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac output has always been a subject of interest to both clinicians and researchers in different branches of medicine and surgery. In the last decade more attention has also been paid to its application in pediatrics, neonatology, fetal medicine and pregnancy. Better understanding of the peripheral circulation has provided more insight into the patholophysiology of different diseases. Many cardiac and non-cardiac disorders affect cardiac outputs. Monitoring of the changes in cardiac output is also important in the acutely ill patient. There are several methods to measure cardiac output, each with advantages and pitfalls. This book deals with all relevant aspects of cardiac output in eight parts: part one describes the methods of measuring cardiac output and a comparison between the catheterisation based and the noninvasive techniques, while part two describes the changes in cardiac output due to physiological causes. Part three describes cardiac output in cardiac diseases and systemic hypertension. Cardiac output in acutely ill patients is discussed in part four. Effect of cardiac medications, temporary atrial pacing, permanent pacing, pharmacologic stress testing and anesthesia are covered in detail in part six, while changes in cardiac output in noncardiac diseases are described in part seven. Finally great attention has been paid in part eight to the regional circulation including cerebral, coronary, skeletal and splanchnic circulations. A separate chapter discusses in detail the dynamics of blood flow. This book will be useful both to the cardiologists as well as to physicians in other fields of surgery and medicine and to their trainees. Readers will find this book an interesting and a useful reference on the topic of cardiac output.
Book Synopsis When Time Breaks Down by : Arthur T. Winfree
Download or read book When Time Breaks Down written by Arthur T. Winfree and published by . This book was released on 1987 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Description for this book, When Time Breaks Down: The Three-Dimensional Dynamics of Electrochemical Waves and Cardiac Arrhythmias, will be forthcoming.
Book Synopsis Cardiac Mechanics and Function in the Normal and Diseased Heart by : Masatsugu Hori
Download or read book Cardiac Mechanics and Function in the Normal and Diseased Heart written by Masatsugu Hori and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiovascular dynamics is a field in which modelling and systems analysis have formed an extremely important discipline. For example, understanding of even such a fundamental function of the circulation as the relationship between central venous pressure apd cardiac output has required evolution of a pertinent model based on years of exhaustive ex perimental investigations by Starling, Starr, and Guyton. Hemodynamic analyses of pulsatile pressures and flows in the arteries and veins have been a continuing challenge taken up by champions of fluid dynamics such as Frank, Wetterer, Taylor, and Wormersley, just to mention a few names, and some kind of model was always proposed as a conceptual framework. An even greater challenge to cardiovascular dynamicists was how to analyze the intermittent coupling of the ventricle and the arterial or venous vasculature through the valve. The availability of numerical solutions by computer and the recently evolved ventricular model with a time-varying elastance and a pressure-dependent internal resistance opened the way to analysis of this coupling. The ever increasing speed of computers has also facilitated trips between the fre quency and the time domain, even on-line for some experimental studies. This book contains many analyses dedicated to the interactions between the heart and the vasculature, providing the reader with findings at the cutting edge of current research in this field.
