Regulation Of Cardiac Function

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Regulation of Cardiac Contractility

Author : R. John Solaro
Publisher : Biota Publishing
ISBN 13 : 1615041753
Total Pages : 46 pages
Book Rating : 4.6/5 (15 download)

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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.

Cardiovascular Regulation

Author : David Jordan
Publisher : Ashgate Publishing
ISBN 13 : 9781855780248
Total Pages : 159 pages
Book Rating : 4.7/5 (82 download)

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Book Synopsis Cardiovascular Regulation by : David Jordan

Download or read book Cardiovascular Regulation written by David Jordan and published by Ashgate Publishing. This book was released on 1995 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Studies in Physiology series provides a concise introduction to developments in complex areas of physiology for a wide audience. Published on behalf of the Physiology Society, Cardiovascular Regulation provides an up-to-date account of our current understanding of the control of the cardiovascular system that is not covered by existing textbooks. Both students and lecturers of cardiovascular and exercise physiology, medicine, dentistry and biomedical sciences will find this book informative and easy to read. Each chapter has numerous summary boxes. 'Essential reading' suggestions provide additional reading for undergraduates and the suggestions for 'Further reading' cover the subject to postgraduate level.

Regulation of Tissue Oxygenation, Second Edition

Author : Roland N. Pittman
Publisher : Biota Publishing
ISBN 13 : 1615047212
Total Pages : 117 pages
Book Rating : 4.6/5 (15 download)

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Book Synopsis Regulation of Tissue Oxygenation, Second Edition by : Roland N. Pittman

Download or read book Regulation of Tissue Oxygenation, Second Edition written by Roland N. Pittman and published by Biota Publishing. This book was released on 2016-08-18 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.

Control of Cardiac Output

Author : David Young
Publisher : Biota Publishing
ISBN 13 : 1615040226
Total Pages : 110 pages
Book Rating : 4.6/5 (15 download)

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Book Synopsis Control of Cardiac Output by : David Young

Download or read book Control of Cardiac Output written by David Young and published by Biota Publishing. This book was released on 2010-01-01 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although cardiac output is measured as the flow of blood from the left ventricle into the aorta, the system that controls cardiac output includes many other components besides the heart itself. The heart’s rate of output cannot exceed the rate of venous return to it, and therefore, the factors governing venous return are primarily responsible for control of output from the heart. Venous return is affected by its pressure gradient and resistance to flow throughout the vascular system. The pressure gradient for venous return is a function of several factors including the blood volume flowing through the system, the unstressed vascular volume of the circulatory system, its capacitance, mean systemic pressure, and right atrial pressure. Resistance to venous return is the sum of total vascular resistance from the aortic valve to the right atrium. The sympathetic nervous system and vasoactive circulating hormones affect short-term resistance, whereas local tissue blood flow autoregulatory mechanisms are the dominant determinants of long-term resistance to venous return. The strength of contraction of the heart responds to changes in atrial pressure driven by changes in venous return, with small changes in atrial pressure eliciting large changes in strength of contraction, as described by the Frank–Starling mechanism. In addition, the autonomic nervous system input to the heart alters myocardial pumping ability in response to cardiovascular challenges. The function of the cardiovascular system is strongly affected by the operation of the renal sodium excretion–body fluid volume–arterial pressure negative feedback system that maintains arterial blood pressure at a controlled value over long periods. The intent of this volume is to integrate the basic knowledge of these cardiovascular system components into an understanding of cardiac output regulation. Table of Contents: Introduction / Venous Return / Cardiac Function / Integrated Analysis of Cardiac Output Control / Analysis of Cardiac Output Regulation by Computer Simulation / Analysis of Cardiac Output Control in Response to Challenges / Conclusion / References / Author Biography

Regulation of Coronary Blood Flow

Author : Michitoshi Inoue
Publisher : Springer Science & Business Media
ISBN 13 : 4431683674
Total Pages : 330 pages
Book Rating : 4.4/5 (316 download)

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Book Synopsis Regulation of Coronary Blood Flow by : Michitoshi Inoue

Download or read book Regulation of Coronary Blood Flow written by Michitoshi Inoue and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research centering on blood flow in the heart continues to hold an important position, especially since a better understanding of the subject may help reduce the incidence of coronary arterial disease and heart attacks. This book summarizes recent advances in the field; it is the product of fruitful cooperation among international scientists who met in Japan in May, 1990 to discuss the regulation of coronary blood flow.

Simulation and Imaging of the Cardiac System

Author : S. Sideman
Publisher : Springer Science & Business Media
ISBN 13 : 9400949928
Total Pages : 448 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Simulation and Imaging of the Cardiac System by : S. Sideman

Download or read book Simulation and Imaging of the Cardiac System written by S. Sideman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ultrasound velocity tomography allows measurement of cardiac geometries for various phases in the cardiac cycle. The present tomograph makes reconstruc tions at intervals of 20 ms. Because of a lack of clear (intramural) landmarks (except the roots of the papillairy muscle), it is difficult to pinpoint spatial trajectories of particular points in the heart. Therefore, a second method was developed of injecting radiopaque markers in the heart and following their motion patterns during the cardiac cycle with help of a biplane X-ray equipment. The data obtained with both methods can be implemented in our finite element model of the heart to compute intramural stresses and strains. The results obtained sofar with the extended Darcy equation to account for the interaction of blood rheology and tissue mechanics look promising. Further testing with more sophisticated subjects than mentioned in Figure 9 is required before it will be implemented in our finite element model of the heart. We conclude that analysis of regional cardiac function, including regional myocardial blood flow, requires still a major research effort but the results obtained sofar justify, to our opinion, a continuation in this direction. Acknowledgement The authors acknowledge Dr. C. Borst and coworkers for doing the animal experiments and prof. Van Campen and dr. Grootenboer for their participation is some aspects of this work.

Regulation of Cardiac Function

Author : Hiroshi Abe
Publisher : VSP
ISBN 13 : 9789067640350
Total Pages : 346 pages
Book Rating : 4.6/5 (43 download)

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Book Synopsis Regulation of Cardiac Function by : Hiroshi Abe

Download or read book Regulation of Cardiac Function written by Hiroshi Abe and published by VSP. This book was released on 1984-12 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a consensus of views and research trends in the regulation of cardiac function and metabolism. Emphasis is given to the elucidation of fundamental concepts and principles of clinically relevant issues. The aim is that the clinician should be able to approach a particular aspect of any given problem logically, thereby gaining insights into the fundamental pathophysiological mechanism underlying diseases states. Regulation of Cardiac Function is organized within six principle areas from the molecular and cellular aspects to more clinically applied problems of heart disease. This book gives pertinent guidelines and summarizes knowledge on basic research relevant to cardiac function and metabolism in health and disease.

Regulation of Cardiac Contractility

Author : R. John Solaro
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1615041745
Total Pages : 47 pages
Book Rating : 4.6/5 (15 download)

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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 Morgan & Claypool Publishers. This book was released on 2011 with total page 47 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. Table of Contents: Introduction: Contractility and the Integrative Biology of the Myocardium / Control of Contractility Is at the Cellular Level of Organization / Left Ventricular Diastolic and Systolic Pressure, Ejection, and Relaxation Reflect Sarcomeric Mechanical Properties / Integration of Sarcomere Mechanics with Cardiac Function Clarifies the Meaning of Preload, Afterload, and Contractility / Pressure Volume Loops Provide a Quantification of Contractility / Phosphorylations of Regulatory Proteins in Excitation Contraction Coupling Modify Contractility by Controlling Cellular Ca + Fluxes, the Response of the Myofilaments to Ca +, and the Kinetics of the Cross-Bridge Cycle / Contractility May Be Altered by a Variety of Mechanisms Not Involving a Prominent Role for the Autonomic Nervous System / Cardiac Function Curves Provide a Compact Graphical Representation of Regulation of CO and SV / Heart Failure as a Failure of Contractility / References

The Cardiovascular System

Author : A. Kurt Gamperl
Publisher : Academic Press
ISBN 13 : 0128041668
Total Pages : 478 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis The Cardiovascular System by : A. Kurt Gamperl

Download or read book The Cardiovascular System written by A. Kurt Gamperl and published by Academic Press. This book was released on 2017-08-22 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cardiovascular System: Design, Control and Function, Volume 36A, a two- volume set, not only provides comprehensive coverage of the current knowledge in this very active and growing field of research, but also highlights the diversity in cardiovascular morphology and function and the anatomical and physiological plasticity shown by fish taxa that are faced with various abiotic and biotic challenges. Updated topics in this important work include chapters on Heart Morphology and Anatomy, Cardiomyocyte Morphology and Physiology, Electrical Excitability of the Fish Heart, Cardiac Energy Metabolism, Heart Physiology and Function, Hormonal and Intrinsic Biochemical Control of Cardiac Function, and Vascular Anatomy and Morphology. In addition, chapters integrate molecular and cellular data with the growing body of knowledge on heart and in vivo cardiovascular function, and as a result, provide insights into some of the most important questions that still need to be answered. Presents a comprehensive overview of cardiovascular structure and function in fish Covers topics in a way that is ideal for researchers in fish physiology and for audiences within the fields of comparative morphology, histology, aquaculture and ecophysiology Provide insights into some of the most important questions that still need to be answered

Anatomy and Physiology

Author : J. Gordon Betts
Publisher :
ISBN 13 : 9781947172807
Total Pages : 0 pages
Book Rating : 4.1/5 (728 download)

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Book Synopsis Anatomy and Physiology by : J. Gordon Betts

Download or read book Anatomy and Physiology written by J. Gordon Betts and published by . This book was released on 2013-04-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cardiovascular Physiology E-Book

Author : Achilles J. Pappano
Publisher : Elsevier Health Sciences
ISBN 13 : 0323088260
Total Pages : 305 pages
Book Rating : 4.3/5 (23 download)

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Book Synopsis Cardiovascular Physiology E-Book by : Achilles J. Pappano

Download or read book Cardiovascular Physiology E-Book written by Achilles J. Pappano and published by Elsevier Health Sciences. This book was released on 2012-12-20 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiovascular Physiology gives you a solid understanding of how the cardiovascular system functions in both health and disease. Ideal for your systems-based curriculum, this title in the Mosby Physiology Monograph Series explains how the latest concepts apply to real-life clinical situations. Consult this title on your favorite e-reader, conduct rapid searches, and adjust font sizes for optimal readability. Get clear, accurate, and up-to-the-minute coverage of the physiology of the cardiovascular system. Master the material easily with objectives at the start of each chapter; self-study questions, summaries, and key words and concepts. Grasp the latest concepts in vascular, molecular, and cellular biology as they apply to cardiovascular function, thanks to molecular commentaries in each chapter. Apply information to clinical situations with the aid of clinical commentaries and highlighted clinical vignettes throughout.

Regulation of Cardiac Function; Molecular, Cellular, and Pathophysiological Aspects

Author : 阿部裕
Publisher :
ISBN 13 : 9784762274091
Total Pages : 330 pages
Book Rating : 4.2/5 (74 download)

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Book Synopsis Regulation of Cardiac Function; Molecular, Cellular, and Pathophysiological Aspects by : 阿部裕

Download or read book Regulation of Cardiac Function; Molecular, Cellular, and Pathophysiological Aspects written by 阿部裕 and published by . This book was released on 1984 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cardiovascular Physiology Concepts

Author : Richard E. Klabunde
Publisher : Lippincott Williams & Wilkins
ISBN 13 : 1975150090
Total Pages : 689 pages
Book Rating : 4.9/5 (751 download)

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Book Synopsis Cardiovascular Physiology Concepts by : Richard E. Klabunde

Download or read book Cardiovascular Physiology Concepts written by Richard E. Klabunde and published by Lippincott Williams & Wilkins. This book was released on 2020-12-01 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Praised for its concise coverage, this highly accessible monograph lays a foundation for understanding the underlying concepts of normal cardiovascular function and offers a welcome alternative to a more mechanistically oriented approach or an encyclopedic physiology text. Clear explanations, ample illustrations and engaging clinical cases and problems provide the perfect guidance for self-directed learning and prepare you to excel in clinical practice.

Cardiopulmonary Monitoring

Author : Sheldon Magder
Publisher : Springer Nature
ISBN 13 : 3030733874
Total Pages : 952 pages
Book Rating : 4.0/5 (37 download)

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Book Synopsis Cardiopulmonary Monitoring by : Sheldon Magder

Download or read book Cardiopulmonary Monitoring written by Sheldon Magder and published by Springer Nature. This book was released on 2021-09-01 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the basic physiology of the cardiac and pulmonary systems, tools for cardiopulmonary monitoring, and related issues in the management of specific conditions. The volume is divided into three main parts. The first part examines the functional basis of normal and abnormal physiology, organized into cardiac and pulmonary units and followed by a “combined” interactive component. The next section discusses cardiopulmonary monitoring tools and variables and is also divided into cardiac (e.g, echocardiography, heart rate, cardiac output), pulmonary (e.g, lung volume, pleural pressure, electrical impedance tomography), and combined tools such as radiology/MRI and tissue perfusion tests. The third section concerns the management and application of specific clinical problems such as pulmonary hypertension, cardiac shunts, cardiogenic shock, and ECMO with an emphasis on the physiological basics. /div Cardiopulmonary Monitoring: Basic Physiology, Tools, and Bedside Management for the Critically Ill is an essential resource for physicians, residents, fellows, medical students, and researchers in cardiology, critical care, emergency medicine, anesthesiology, and radiology.

Atlas of Cardiac Innervation

Author : Vasken Dilsizian
Publisher : Springer
ISBN 13 : 3319458000
Total Pages : 187 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis Atlas of Cardiac Innervation by : Vasken Dilsizian

Download or read book Atlas of Cardiac Innervation written by Vasken Dilsizian and published by Springer. This book was released on 2016-12-26 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: This atlas elucidates the role of the neuronal component in normal cardiovascular function and cardiac disorders and discusses the currently available imaging targets and probes. It provides a foundation in cardiac neuronal imaging and image processing and serves as a guide in the effective utilization of these techniques in clinical and research settings. The atlas discusses the principles of autonomic control in the regulation of cardiac function and disease; chemistry and biology of radiotracers designed to target changes in the myocardial sympathetic and parasympathetic innervation as a function of disease or treatment; neuronal imaging in heart failure and reverse remodeling and the use of PET imaging in quantification of cardiac innervation; cardiac sympathetic innervation in ventricular arrhythmias and device therapy; conditions that affect the autonomic nervous system; and the role of myocardial blood flow and cardiac neuronal imaging in denervation and reinnervation in cardiac transplant recipients. Featuring full-color illustrations, schematic diagrams, and diagnostic algorithms, Atlas of Cardiac Innervation is a valuable resource for cardiologists, radiologists, nuclear medicine physicians, and electrophysiologists.

Pathophysiology of Shock, Sepsis, and Organ Failure

Author : Günther Schlag
Publisher : Springer Science & Business Media
ISBN 13 : 3642767362
Total Pages : 1180 pages
Book Rating : 4.6/5 (427 download)

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Book Synopsis Pathophysiology of Shock, Sepsis, and Organ Failure by : Günther Schlag

Download or read book Pathophysiology of Shock, Sepsis, and Organ Failure written by Günther Schlag and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book current knowledge of the pathophysiology of shock, sepsis and multi organ failure is presented. The rapid progress which has been made and the results achieved in intensive care medicine are based on sound basic research, which is duly reflected in these chapters. Multiorgan failure is the foremost cause of postoperative and posttraumatic death and many complex mechanisms are involved. Only with a good foundation of basic research can abnormalities in the physiological, biochemical, and morphological course of shock be recognized and the necessary conclusions for treatment drawn. Therapy must proceed from profound knowledge of the multi variant physiological events in order to influence shock, sepsis and organ failure. Although numerous possibilities for therapy have arisen from pharmaceutical research in recent years, they are beyond the scope of this book and are not discussed here. To gain a better understanding of the pathophysiological events it was necessary to examine and to describe different models that simulate and reproduce these events. Here we describe the causative agents (shock) and the consequences (sepsis, organ failure) in two main sections, divided on the basis of their pathophysiology.

Autonomic Failure

Author : Roger Bannister
Publisher : Oxford University Press, USA
ISBN 13 :
Total Pages : 690 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Autonomic Failure by : Roger Bannister

Download or read book Autonomic Failure written by Roger Bannister and published by Oxford University Press, USA. This book was released on 1983 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life is a journey and we all have to go thru this progress. When I make wrong choices it was for a reason, it was for a purpose. I had to learn from it.I can not be ashamed of No one.I can not think that I am better then No One Else.I can not think less of No one Else.I can not talk about No One.Because My Father was not ashamed of Me.Because My Father did not think less of Me.Because My Father did not talk about my dirt or my sins to Anyone.Because My Father did not think that he was Better then me.HE ONLY LOVE ME