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The Arterial System In Hypertension
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Book Synopsis The Arterial System in Hypertension by : Michel Emile Safar
Download or read book The Arterial System in Hypertension written by Michel Emile Safar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: MICHEL E. SAFAR and MICHAEL F. O'ROURKE One of the principal problems of hypertension is the precise definition of blood pressure as a cardiovascular risk factor. Clinicians indicate peak systolic pressure and end diastolic pressure in the brachial artery as the principal criteria for blood pressure measurement. Consequently, these values are as indicators for clinical management and therapeutic adjustment. This used methodology, based on indirect blood pressure measurements at the site of the brachial artery relates only to the highest and lowest pressure in that vessel, and does not give any information of the blood pressure curve itself; this carries more information than peak systolic pressure and end diastolic pressure. As a first step in better analysis of the blood pressure curve, research workers in experimental hypertension defined in addition to peak systolic pressure and end diastolic, another blood pressure value, mean arterial pressure, i. e. the average pressure throughout the cardiac cycle, and about which pressure fluctuates. This is the pressure recorded by Hales [1] and by Poiseuille [2] in their pioneering studies. By application of Poiseuille's Law, this definition of mean arterial pressure led to the concept that increased mean arterial pressure (and therefore hypertension) was related, at any given value of cardiac output, to an increase in vascular resistance, i. e. to a reduc tion in the caliber of the small arteries.
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.
Book Synopsis ABC of Hypertension by : D. Gareth Beevers
Download or read book ABC of Hypertension written by D. Gareth Beevers and published by John Wiley & Sons. This book was released on 2010-07-15 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypertension is a condition which affects millions of peopleworldwide and its treatment greatly reduces the risk of strokes andheart attacks. This fully revised and updated edition of the ABCof Hypertension is an established guide providing all thenon-specialist needs to know about the measurement of bloodpressure and the investigation and management of hypertensivepatients. This new edition provides comprehensively updated andrevised information on how and whom to treat. The ABC of Hypertension will prove invaluable to generalpractitioners who may be screening large numbers of patients forhypertension, as well as nurse practitioners, midwives and otherhealthcare professionals.
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.
Author :Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure Publisher : ISBN 13 : Total Pages :44 pages Book Rating :4.:/5 (3 download)
Book Synopsis Report of the Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure by : Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure
Download or read book Report of the Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure written by Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure and published by . This book was released on 1984 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Arterial Stiffness in Hypertension by : Michel Safar
Download or read book Arterial Stiffness in Hypertension written by Michel Safar and published by Elsevier Health Sciences. This book was released on 2006-04-21 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Main headings: I. Basic concepts of pulsatile arterial hemodynamics. - II. Pathophysiological mechanisms. - III. Arterial stiffness, wave reflections, cardiovascular risk and end-organ damage. - IV. Clinical aspects of arterial stiffness and wave reflections. - V. Therapeutic aspects of arterial stiffness and wave reflections.
Book Synopsis Blood Pressure by : Lewellys Franklin Barker
Download or read book Blood Pressure written by Lewellys Franklin Barker and published by . This book was released on 1924 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The ESC Textbook of Vascular Biology by : Rob Krams
Download or read book The ESC Textbook of Vascular Biology written by Rob Krams and published by Oxford University Press. This book was released on 2017 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ESC Textbook of Vascular Biology is a rich and clearly laid-out guide by leading European scientists providing comprehensive information on vascular physiology, disease, and research.
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:
Download or read book Pulse Waves written by Paolo Salvi and published by Springer. This book was released on 2016-10-29 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, revised and updated edition takes into account the most recent advances in the understanding of human pathophysiology. The book presents the complex basic principles of vascular hemodynamics and its pathophysiologie in a direct and effective way, stressing the importance of the mechanical properties of large arteries in the origin of blood pressure. The readily understandable text, supported by helpful images, describes the elements that define blood pressure and explains such important concepts as pulse wave velocity, central blood pressure, reflected waves, and pulse pressure amplification. Entirely new chapters are included on the sympathetic nervous system and arterial stiffness and on the role played by arterial stiffness in influencing blood pressure variability. The book will enable the physician to answer some of the key questions encountered when addressing the problem of arterial hypertension in everyday clinical practice: How is blood pressure generated? How should blood pressure values be interpreted? Is systolic blood pressure of greater importance than diastolic blood pressure?
Book Synopsis Mechanisms of Vascular Disease by : Robert Fitridge
Download or read book Mechanisms of Vascular Disease written by Robert Fitridge and published by University of Adelaide Press. This book was released on 2011 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: New updated edition first published with Cambridge University Press. This new edition includes 29 chapters on topics as diverse as pathophysiology of atherosclerosis, vascular haemodynamics, haemostasis, thrombophilia and post-amputation pain syndromes.
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.
Book Synopsis Arterial and Venous Systems in Essential Hypertension by : Michel Emile Safar
Download or read book Arterial and Venous Systems in Essential Hypertension written by Michel Emile Safar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hemodynamic mechanisms of hypertension are often limited to the study of three dominant parameters: blood pressure, cardiac output and vascular resis tance. Accordingly, the development of hypertension is usually analyzed in terms of a 'struggle' between cardiac output and vascular resistance, resulting in the classical pattern of normal cardiac output and increased vascular resistance, thus indicating a reduction in the caliber of small arteries. However, during the past years, the clinical management of hypertension has largely modified these simple views. While an adequate control of blood pressure may be obtained with antihypertensive drugs, arterial complications may occur, involving mainly the coronary circulation and suggesting that several parts of the cardiovascular system are altered in hypertension. Indeed, disturbances in the arterial and the venous system had already been noticed in animal hypertension. The basic assumption in this book is that the overall cardiovascular system is involved in the mechanisms of the elevated blood pressure in patients with hypertension: not only the heart and small arteries, but also the large arteries and the venous system. For that reason, the following points are emphasized. First, the cardiovascular system in hypertension must be studied not only in terms of steady flow but also by taking into account the pulsatile components of the heart and the arterial systems. Second, arterial and venous compliances are altered in hypertension and probably reflect intrinsic alterations of the vascular wall.
Book Synopsis Biology of the Arterial Wall by : Bernard I. Levy
Download or read book Biology of the Arterial Wall written by Bernard I. Levy and published by Springer Science & Business Media. This book was released on 2007-11-23 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology of the Arterial Wall is intended as a general reference text concerned with the biology of the vascular cells and the blood vessel wall under physiological and pathological conditions. One of the major functions of the arteries is to maintain a continuous blood flow to the organs whatever the pressure conditions, thanks to the vasomotor tone of the smooth muscle cells. Great advances have been made over the last decade in the understanding of the endothelial cells as integrators and transducers of signals originating from the blood stream. The pluripotent control functions of the endothelial cells in the vessel wall are now well recognized. A review of endothelial functions and dysfunctions is presented. Cell biology and molecular genetic studies have now identified an array of molecules elaborated by endothelial cells and vascular smooth muscle cells and by the blood-borne elements which interact with artery cells, defending the artery against injury and modulating evolving abnormal processes. Molecules which induce or inhibit endothelial and/or smooth muscle cells are currently under great scrutiny. Angiogenesis, which plays a major role in tumor growth, but may also be beneficial as a healing process in muscle ischemia, is discussed. Apoptosis, or programmed cell death, has only recently been recognized as an essential process in blood vessel modeling and remodeling. An overview of apoptosis in the vascular system is presented. It is increasingly evident that the adjustments of the blood vessel wall are made in the presence of deforming disease processes such as hypertension and atherosclerosis. The second part of the book is concerned with the blood vessel wall in disease conditions. Several chapters review the role of the vessel and vascular cells in inflammation, and vascular remodeling during arterial hypertension and aging. One chapter is devoted to atherogenesis, atheroma and plaque instability, followed by the pathophysiology of post-angioplasty restenosis, which is a crucial issue in modern interventional cardiology.
Download or read book The Arterial System written by R.D. Bauer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the papers presented at the symposium "Dynamics and Regulation of the Arterial System" held at Erlangen on 28-30 October 1977 in honor of Professor Erik Wetterer. The aim of the symposium was an inten sive exchange of ideas within a mUltidisciplinary group of scientists who are specialists in their fields of research. It is obvious that a two-day symposium covering such a wide range of topics could only highlight certain aspects of the latest research on the cardiovascular system. The book is divided into three sections. The first part deals with arterial hemo dynamics. Emphasized are the mechanical properties of the arterial wall, in particular the smooth muscle, fundamental parameters for the description of pulse wave propagation, such as attenuation, phase velocity, and reflection of pulse waves. Furthermore, new methods for recording arterial diameters and the latest results in determining pulsatile pressure and pulsatile diameter of arteries in vivo as well as from calculations based on models of the arterial system are presented. The second part deals with applications of the control theory and the principles of optimality of the cardiovascular system in toto and of single regions of this system. Contributions to research in the field of regulation of blood volume and of regional hemodynamics are also presented. The third part covers problems of interaction of the heart and the arterial system, including fluid mechanics of the aortic valves and the coronary blood flow under normal and pathologic conditions.
Book Synopsis Arteries in Clinical Hypertension by : Michel Safar
Download or read book Arteries in Clinical Hypertension written by Michel Safar and published by J.B. Lippinott. This book was released on 1996 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text stresses the importance of obtaining a blood pressure reduction while also improving the structural and functional abnormalities of the large arterial vessels. The book concludes with a critical review of the therapeutic trials of hypertension.
Book Synopsis The Arterial Circulation by : John K-J Li
Download or read book The Arterial Circulation written by John K-J Li and published by Springer Science & Business Media. This book was released on 2000-05-05 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: After yet another decade of leaming, experimenting, and inves tigating since my first book, Arterial System Dynamics, the many new medical breakthroughs and technological advances have inspired me to write this book to bridge the gap between basic research and clinical applications. The application of physical principles and quantitative approaches to the understanding of the arterial circulation and its interactions with the heart in normal and diseased conditions form the basis of The Arterial Circulation. Knowledge of the physiology and rheology of arteries, as well as all of their structural-functional corre lates, is a necessary prerequisite to the proper hemodynamic interpretatiqn of pressure-flow relations and the pulsatile transmis sion characteristics in different arteries. The natural coupling and interactions of the heart, the coronary circulation, and the arterial system necessitate analysis of alterations to global functioning. Modeling provides a tool for isolating and predicting parameter changes and is employed throughout the book. Experimental data are provided for model validations, and also for more realistic interpretations. Techniques and new methods for clinical hemo dynamic measurement and diagnosis are included to help the reader un derstand the physical principles underlying such abnormal cardiovascular functions as hypertension, stenosis, and myocardial ischemia. The progressive changes in vascular properties during aging are also discussed. Modem approaches utilizing computer mode ling and allomery are presented with selected examples, such as combined hypertension and aortic valve stenosis, and ventricular hypertrophy.
