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Author: James J. Smith
Publisher: CRC Press
ISBN: 9780849365188
Category : Medical
Languages : en
Pages : 200
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Book Description
This is the only up-to-date systematic review of normal human response to upright posture and lower body negative pressure (LBNP). It analyzes the key factors that influence postural tolerance, such as physical fitness, weightlessness, age, and sex. It also provides extensive details on the circulatory changes that have occurred during U.S. and Soviet manned space flights. The text is brilliantly illustrated with diagrams, tables, and comments on circulatory methods. Readers will discover some information which has never before been published. This one-of-a-kind volume also reviews the diagnosis and treatment of orthostatic hypotension-an extremely common orthostatic disorder. Circulatory Response to the Upright Posture is the first available literature since 1982 of human physiological and pathophysiological aspects of postural tolerance. A wide variety of readers will find this title interesting and of value. Circulatory physiologists, cardiologists, and everyone with an interest in exercise physiology, aging, space physiology, and environmental physiology will especially benefit from this writing.
Author: James J. Smith
Publisher: CRC Press
ISBN: 9780849365188
Category : Medical
Languages : en
Pages : 200
Get Book Here
Book Description
This is the only up-to-date systematic review of normal human response to upright posture and lower body negative pressure (LBNP). It analyzes the key factors that influence postural tolerance, such as physical fitness, weightlessness, age, and sex. It also provides extensive details on the circulatory changes that have occurred during U.S. and Soviet manned space flights. The text is brilliantly illustrated with diagrams, tables, and comments on circulatory methods. Readers will discover some information which has never before been published. This one-of-a-kind volume also reviews the diagnosis and treatment of orthostatic hypotension-an extremely common orthostatic disorder. Circulatory Response to the Upright Posture is the first available literature since 1982 of human physiological and pathophysiological aspects of postural tolerance. A wide variety of readers will find this title interesting and of value. Circulatory physiologists, cardiologists, and everyone with an interest in exercise physiology, aging, space physiology, and environmental physiology will especially benefit from this writing.
Author: Hanns-Christian Gunga
Publisher: Springer
ISBN: 3319332260
Category : Medical
Languages : en
Pages : 87
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Book Description
This book comprehensively describes the physiological changes and consequences that occur in humans during spaceflight. It specifically presents the adaptations of the cardiovascular and the respiratory system. Specific changes occurring after 10, 20 or more days in space are depicted. Furthermore, the book explains various effective countermeasures that are required upon return of the astronauts to Earth. The book is a must-have for all biomedical and clinical researchers in the field of cardiovascular biology and respiration, and a fascinating reading for all interested laymen, who wish to understand a bit more about spaceflight research and technology.
Author: Nico Westerhof
Publisher: Springer Science & Business Media
ISBN: 0387233466
Category : Medical
Languages : en
Pages : 182
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Book Description
Hemodynamics makes it possible to characterize in a quantitative way, the function of the heart and arterial system, thereby producing information about what genetic and molecular processes are of importance for cardiovascular function. Snapshots of Hemodynamics: An Aid for Clinical Research and Graduate Education by Nico Westerhof, Nikos Stergiopulos and Mark I. M. Noble is a quick reference guide designed to help basic and clinical researchers as well as graduate students to understand hemodynamics. The layout of the book provides short and independent chapters that provide teaching diagrams as well as clear descriptions of the essentials of basic and applied principles of hemodynamics. References are provided at the end of each chapter for further reading and reference.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309084369
Category : Law
Languages : en
Pages : 417
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Book Description
The polygraph, often portrayed as a magic mind-reading machine, is still controversial among experts, who continue heated debates about its validity as a lie-detecting device. As the nation takes a fresh look at ways to enhance its security, can the polygraph be considered a useful tool? The Polygraph and Lie Detection puts the polygraph itself to the test, reviewing and analyzing data about its use in criminal investigation, employment screening, and counter-intelligence. The book looks at: The theory of how the polygraph works and evidence about how deceptivenessâ€"and other psychological conditionsâ€"affect the physiological responses that the polygraph measures. Empirical evidence on the performance of the polygraph and the success of subjects' countermeasures. The actual use of the polygraph in the arena of national security, including its role in deterring threats to security. The book addresses the difficulties of measuring polygraph accuracy, the usefulness of the technique for aiding interrogation and for deterrence, and includes potential alternativesâ€"such as voice-stress analysis and brain measurement techniques.
Author: David Jordan
Publisher: Ashgate Publishing
ISBN: 9781855780248
Category : Medical
Languages : en
Pages : 159
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Book Description
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.
Author: Ronald J. Korthuis
Publisher: Morgan & Claypool Publishers
ISBN: 1615041834
Category : Medical
Languages : en
Pages : 147
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Book Description
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
Author: Ahmet Turan Isik
Publisher: Springer Nature
ISBN: 3030624935
Category : Medical
Languages : en
Pages : 146
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Book Description
This book provides a comprehensive and practical guide to orthostatic hypotension (OH) for doctors and nurses involved in the care of older adults, together with a state-of-the-art update on OH, covering its epidemiology, pathophysiology, assessment, diagnosis, causes, prevention, management, and relevance for geriatric practice. In addition, it addresses mechanisms of orthostatic tolerance and other orthostasis related conditions, as well as drugs, comorbidities and geriatric syndromes related to OH. The homeostatic ability to maintain blood pressure while standing requires an adequate blood volume and the integrity of the nervous system, heart, blood vessels and muscle pump. However, in older adults, some age-related factors can contribute to the development of OH. For example, decreased baroreflex sensitivity, α-1-adrenergic vasoconstrictor response to sympathetic stimuli, parasympathetic activity, renal salt and water conservation, increased vascular stiffness and decreased ventricular diastolic filling, as well as concentrated capacities of the kidney may be associated with changes in postural blood pressure. It has also been shown that OH is associated with falls, cardiac events, heart failure, stroke, reduced quality of life, and increased risk of overall mortality in these patients. “Orthostatic Hypotension in Older Adults” will be of considerable interest to all professionals working in the fields of geriatrics, geriatric psychiatry, neurology, internal medicine, cardiology, and emergency medicine, or working with older people in hospitals or in their community.
Author: Johnny T. Ottesen
Publisher: SIAM
ISBN: 9780898718287
Category : Medical
Languages : en
Pages : 311
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Book Description
This book introduces mathematicians to real applications from physiology. Using mathematics to analyze physiological systems, the authors focus on models reflecting current research in cardiovascular and pulmonary physiology. In particular, they present models describing blood flow in the heart and the cardiovascular system, as well as the transport of oxygen and carbon dioxide through the respiratory system and a model for baroreceptor regulation.
Author: Jasper R. Daube
Publisher: Oxford University Press
ISBN: 0199725144
Category : Medical
Languages : en
Pages : 915
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Book Description
Clinical Neurophysiology, Third Edition will continue the tradition of the previous two volumes by providing a didactic, yet accessible, presentation of electrophysiology in three sections that is of use to both the clinician and the researcher. The first section describes the analysis of electrophysiological waveforms. Section two describes the various methods and techniques of electrophysiological testing. The third section, although short in appearance, has recommendations of symptom complexes and disease entities using electroencephalography, evoked potentials, and nerve conduction studies.
Author: Richard E. Klabunde
Publisher: Lippincott Williams & Wilkins
ISBN: 1975150090
Category : Medical
Languages : en
Pages : 717
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Book Description
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.
