Interactive Phenomena in the Cardiac System
Interactive Phenomena in the Cardiac System

Author: S. Sideman

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 417

ISBN-13: 1461529468

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The cardiac system represents one of the most exciting challenges to human ingenuity. Critical to our survival, it consists of a tantalizing array of interacting phenomena, from ionic transport, membrane channels and receptors through cellular metabolism, energy production to fiber mechanics, microcirculation, electrical activation to the global, clinically observed, function, which is measured by pressure, volume, coronary flow, heart rate, shape changes and responds to imposed loads and pharmaceutical challenges. It is a complex interdisciplinary system requiring the joint efforts of the life sciences, the exact sciences, engineering and technology to understand and control the pathologies involved. The Henry Goldberg Workshops were set up to address these multivariable, multidisciplinary challenges. Briefly, our goals are: To encourage international cooperation and foster interdisciplinary interaction between scientists from the different areas of cardiology; to relate microscale cellular phenomena to the global, clinically manifested cardiac function; to relate conceptual modeling and quantitative analysis to experimental and clinical data; to gain an integrated view of the various interacting parameters, identify missing links, catalyze new questions, and lead to better understanding of the cardiac system. The outstanding success of past workshops has encouraged their continuation. The first Henry Goldberg Workshop, held in Haifa in 1984, introduced the concept of interaction between mechanics, electrical activation, perfusion and metabolism, emphasizing imaging in the clinical environment. The second Workshop, in 1985, discussed the same parameters with a slant towards the control aspects.

Regulation of Tissue Oxygenation, Second Edition
Regulation of Tissue Oxygenation, Second Edition

Author: Roland N. Pittman

Publisher: Biota Publishing

Published: 2016-08-18

Total Pages: 117

ISBN-13: 1615047212

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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.

Skeletal Muscle Circulation
Skeletal Muscle Circulation

Author: Ronald J. Korthuis

Publisher: Morgan & Claypool Publishers

Published: 2011

Total Pages: 147

ISBN-13: 1615041834

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The aim of this treatise is to summarize the current understanding of the mechanisms for blood flow control to skeletal muscle under resting conditions, how perfusion is elevated (exercise hyperemia) to meet the increased demand for oxygen and other substrates during exercise, mechanisms underlying the beneficial effects of regular physical activity on cardiovascular health, the regulation of transcapillary fluid filtration and protein flux across the microvascular exchange vessels, and the role of changes in the skeletal muscle circulation in pathologic states. Skeletal muscle is unique among organs in that its blood flow can change over a remarkably large range. Compared to blood flow at rest, muscle blood flow can increase by more than 20-fold on average during intense exercise, while perfusion of certain individual white muscles or portions of those muscles can increase by as much as 80-fold. This is compared to maximal increases of 4- to 6-fold in the coronary circulation during exercise. These increases in muscle perfusion are required to meet the enormous demands for oxygen and nutrients by the active muscles. Because of its large mass and the fact that skeletal muscles receive 25% of the cardiac output at rest, sympathetically mediated vasoconstriction in vessels supplying this tissue allows central hemodynamic variables (e.g., blood pressure) to be spared during stresses such as hypovolemic shock. Sympathetic vasoconstriction in skeletal muscle in such pathologic conditions also effectively shunts blood flow away from muscles to tissues that are more sensitive to reductions in their blood supply that might otherwise occur. Again, because of its large mass and percentage of cardiac output directed to skeletal muscle, alterations in blood vessel structure and function with chronic disease (e.g., hypertension) contribute significantly to the pathology of such disorders. Alterations in skeletal muscle vascular resistance and/or in the exchange properties of this vascular bed also modify transcapillary fluid filtration and solute movement across the microvascular barrier to influence muscle function and contribute to disease pathology. Finally, it is clear that exercise training induces an adaptive transformation to a protected phenotype in the vasculature supplying skeletal muscle and other tissues to promote overall cardiovascular health. Table of Contents: Introduction / Anatomy of Skeletal Muscle and Its Vascular Supply / Regulation of Vascular Tone in Skeletal Muscle / Exercise Hyperemia and Regulation of Tissue Oxygenation During Muscular Activity / Microvascular Fluid and Solute Exchange in Skeletal Muscle / Skeletal Muscle Circulation in Aging and Disease States: Protective Effects of Exercise / References

Molecular and Subcellular Cardiology
Molecular and Subcellular Cardiology

Author: S. Sideman

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 351

ISBN-13: 1461518938

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The Henry Goldberg Workshops were set up to address the following goals: (1) To foster interdisciplinary interaction between scientists and cardiologists, identify missing links, and catalyze new ideas. (2) To relate basic microscale phenomena to the global, clinically manifested cardiac function. (3) To relate conceptual modeling and quantitative analysis to experimental and clinical data. (4) To encourage international cooperation so as to disperse medical and technological knowhow and lead to better understanding of the cardiac system. The first Henry Goldberg Workshop, held in Haifa in 1984, introduced the concept of interaction between cardiac mechanics, electrical activation, perfusion, and metabolism, emphasizing imaging in the clinical environment. The second Workshop, in 1985, discussed the same parameters with a slant towards the control aspects. The third Goldberg Workshop, held in the USA at Rutgers University in 1986, highlighted the transformation of the microscale activation phenomena to macroscale activity and performance, relating electrophysiology, energy metabolism, and cardiac mechanics. The fourth Goldberg Workshop, in 1987, continued the effort to elucidate the interactions among the various parameters affecting cardiac performance, with emphasis on the ischemic heart. The fifth Workshop, held in Cambridge, UK, in 1988, dwelt on the effects of inhomogeneity of the cardiac muscle on its performance in health and disease. The sixth Workshop highlighted the role of new modem imaging techniques, that allow us to gain more insight into local and global cardiac performance in cardiac research and clinical practice.

Coronary Circulation
Coronary Circulation

Author: Ghassan S. Kassab

Publisher: Springer

Published: 2019-05-15

Total Pages: 579

ISBN-13: 303014819X

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This comprehensive text examines both global and local coronary blood flow based on morphometry and mechanical properties of the coronary vasculature. Using a biomechanical approach, this book addresses coronary circulation in a quantitative manner based on models rooted in experimental data that account for the various physical determinants of coronary blood flow including myocardial-vessel interactions and various mechanisms of autoregulation. This is the first text dedicated to a distributive analysis (as opposed to lumped) and provides digital files for detailed anatomical data (e.g., diameters, lengths, node-to-node connections) of the coronary vessels. This book also provides appendices with specific mathematical formulations for the biomechanical analyses and models in the text. Written by Dr. Ghassan S. Kassab, a leader in the field of coronary biomechanics, Coronary Circulation: Anatomy, Mechanical Properties, and Biomechanics is a synthesis of seminal topics in the field and is intended for clinicians, bioengineers, and researchers as a compendium on the topic. The detailed anatomical and mechanical data provided are intended to be used as a platform to address new questions in this exciting and clinically very important research area.

Purines and Myocardial Protection
Purines and Myocardial Protection

Author: Anwar-Saad A. Abd-Elfattah

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 565

ISBN-13: 1461304555

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A critical review of the most up-to-date research on purines and myocardial protection. The role of purines in reversible `myocardial stunning' and irreversible (myocardial infarction) ischemic injury, ventricular arrhythmias, and ischemic preconditioning is discussed in detail, by experts. All reviews address recent and rather controversial issues on purines and myocardial protection. Mechanisms of cardioprotection of exogenous versus endogenous purines are discussed in detail. The contribution of internationally recognized experts in the field of purines and cardiovascular physiology and in myocardial protection makes this a unique and interesting book for clinicians, basic scientists and students.

E-Book Visceral and Obstetric Osteopathy
E-Book Visceral and Obstetric Osteopathy

Author: Caroline Stone

Publisher: Elsevier Health Sciences

Published: 2006-11-21

Total Pages: 365

ISBN-13: 0702035106

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This title covers the osteopathic approach to patient management for pregnant women (pre and post partum), and for patients presenting with a variety of visceral conditions such as asthma, chronic breathing problems, various gastro-intestinal tract disorders such as irritable bowel syndrome, other conditions such as post operative scarring and pain, and many others. It also addresses the improvement of management of general musculo-skeletal problems such as back pain, neck pain and so on, by incorporating visceral and fascial perspectives into those examinations and treatment protocols. Current clinical knowledge, and ethical and medical constraints are dissucssed throughout. Supported by clear illustrations and clinical case studies this books makes an excellent resource for all practitioners and students of osteopathy.•Author is a world renowned lecturer in visceral osteopathy for the last 15 years, and more recently in the field of obstetrics.•Potentially a core textbook for undergraduate and post graduate courses•Clear, functional presentation•Abundant illustrations and photographs•Case studies are included to supplement the text•Visceral osteopathy is the new 'cranio-sacral therapy' in osteopathy/manual therapy and this is the text to fill the gap.Foreword by Jean-Pierre Barral.

The Chemokines
The Chemokines

Author: I.J.D. Lindley

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 233

ISBN-13: 1461529522

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The first symposium in this series was held at the Royal College of Surgeons of England in December 1988 and was entitled "Novel Neutrophil Stimulating Peptides". That symposium successfully brought together the majority of laboratories working in the area of interleukin-8 and related peptides; see Immunology Today 10: 146-147 (1989). The Second International Symposium on Chemotactic Cytokines was held at the same venue in June 1990, and a much-increased attendance reflected the accelerating pace of work in the area of these chemotactic cytokines. The proceedings of that meeting were published in Advances in Experimental Medicine and Biology, vol. 305 (1991). The rapid advances made in the field of chemotactic cytokines over the last 18 months necessitated a third Symposium in this series to collate and place in perspective an explosion of new data. The Third International Symposium on Chemotactic Cytokines was held between August 31 and September 1, 1992 in Baden-bei-Wien, Austria. However, the lack of a clear nomenclature system was creating some confusion in the area, especially as new factors continue to be discovered and classified as family members. In the past, these inflammatory mediators had been placed arbitrarily under the broad heading of "intercrines" or "chemotactic cytokines" with no clear classification guidelines to follow. This nomenclature issue was addressed at the Symposium, where investigators in the field were invited to reach a consensus regarding a collective name for these mediators. The resulting decision was to identify the major family as chemokines, to replace all previous terms.