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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.
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.
Author :Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure Publisher : ISBN 13 : Total Pages :20 pages Book Rating :4.3/5 (121 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 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Cardiovascular Disability by : Institute of Medicine
Download or read book Cardiovascular Disability written by Institute of Medicine and published by National Academies Press. This book was released on 2010-12-04 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Social Security Administration (SSA) uses a screening tool called the Listing of Impairments to identify claimants who are so severely impaired that they cannot work at all and thus immediately qualify for benefits. In this report, the IOM makes several recommendations for improving SSA's capacity to determine disability benefits more quickly and efficiently using the Listings.
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 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 From Hypertension to Heart Failure by : Michael Böhm
Download or read book From Hypertension to Heart Failure written by Michael Böhm and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arterial hypertension, coronary heart disease and heart fail ure are the commonest cardiovascular conditions to present in clinical practice. Over the past few years it has become in creasingly clear that they are closely and causally interrelated and that their relationship can have a significant bearing on prognosis. Epidemiological studies have shown that arterial hypertension is one of the most important risk factors for de veloping heart failure. Only one in four patients with hyper tension is adequately managed, and in 50% of cases, the hypertension has not been recognised or treated. Patients with pre-existing hypertension who go on to suffer an acute myocardial infarction have usually not previously had typi cal angina symptoms, the infarct territory is larger, life threatening arrhythmias are commoner and hence in-hospi tal mortality and long-term prognosis are markedly worse. The presence of raised blood pressure in the post-infarct phase doubles the risk of manifest heart failure. The close relationship between hypertension, coronary heart disease and heart failure makes the choice of therapeu tic strategy particularly important. Agents and classes of agents that have prognostic value in all three conditions should be considered first, as synergy might result in addi tional benefits. In such patients, this sort of therapeutic deci sion-making might have further advantages. The use of these agents may prevent complications which are not yet clinically obvious (such as heart failure).
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 227 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 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:
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 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.
Download or read book Pulse Waves written by Paolo Salvi and published by Springer Science & Business Media. This book was released on 2012-04-27 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, several studies have shown the crucial role of viscoelastic properties of the aorta and large arteries in determining blood pressure values. A good knowledge of cardiovascular pathophysiology and vascular hemodynamics is necessary to understand these phenomena. However, available texts on this topic are very complex and difficult for medical practitioners to understand. The aim of this book is to enable the reader to comprehend the relation between cardiovascular pathophysiology and vascular hemodynamics and to become familiar with the more recent guidelines. While very complex physical concepts are involved, care has been taken to ensure that the explanations are as straightforward as possible. Complex analyses are presented separately and can be skipped by the reader without impairment of understanding. It is envisaged that the knowledge imparted will prove invaluable in improving the approach to hypertensive patients.
