The Role Of The Kidney In The Regulation Of Blood Pressure
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| Author | : Thomas Luescher |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 582 |
| Release | : 2012-12-06 |
| Genre | : Medical |
| ISBN | : 3642612393 |
This monograph provides a timely update on the pathophysiology, diagnosis, and therapy of renovascular and renal parenchymatous hypertension. The underlying causes of the most common forms of hypertension are discussed in separate chapters. Special emphasis is laid on newer pathophysiological aspects of the disease, in particular the vascular wall renin-angiotensin system. Furthermore, there is in depth discussion of all the new techniques that are currently available for use in the diagnosis of renal hypertension, e.g., ultrasound and Doppler techniques, magnetic resonance imaging, and nuclear renography. These techniques are discussed by internationally renowned experts in the field. The book also covers topics such as the value of medical therapy, surgical techniques, and percutaneous transluminal angioplasty, with special reference to the treatment of renal hypertension.
| Author | : Ulla Kopp |
| Publisher | : Morgan & Claypool Publishers |
| Total Pages | : 99 |
| Release | : 2011 |
| Genre | : Medical |
| ISBN | : 1615042318 |
The kidney is innervated with efferent sympathetic nerve fibers reaching the renal vasculature, the tubules, the juxtaglomerular granular cells, and the renal pelvic wall. The renal sensory nerves are mainly found in the renal pelvic wall. Increases in efferent renal sympathetic nerve activity reduce renal blood flow and urinary sodium excretion by activation of α1-adrenoceptors and increase renin secretion rate by activation of β1-adrenoceptors. In response to normal physiological stimulation, changes in efferent renal sympathetic nerve activity contribute importantly to homeostatic regulation of sodium and water balance. The renal mechanosensory nerves are activated by stretch of the renal pelvic tissue produced by increases in renal pelvic tissue of a magnitude that may occur during increased urine flow rate. Activation of the sensory nerves elicits an inhibitory renorenal reflex response consisting of decreases in efferent renal sympathetic nerve activity leading to natriuresis. Increasing efferent sympathetic nerve activity increases afferent renal nerve activity which, in turn, decreases efferent renal sympathetic nerve activity by activation of the renorenal reflexes. Thus, activation of the afferent renal nerves buffers changes in efferent renal sympathetic nerve activity in the overall goal of maintaining sodium balance. In pathological conditions of sodium retention, impairment of the inhibitory renorenal reflexes contributes to an inappropriately increased efferent renal sympathetic nerve activity in the presence of sodium retention. In states of renal disease or injury, there is a shift from inhibitory to excitatory reflexes originating in the kidney. Studies in essential hypertensive patients have shown that renal denervation results in long-term reduction in arterial pressure, suggesting an important role for the efferent and afferent renal nerves in hypertension. Table of Contents: Part I: Efferent Renal Sympathetic Nerves / Introduction / Neuroanatomy / Neural Control of Renal Hemodynamics / Neural Control of Renal Tubular Function / Neural Control of Renin Secretion Rate / Part II: Afferent Renal Sensory Nerves / Introduction / Neuroanatomy / Renorenal Reflexes / Mechanisms Involved in the Activation of Afferent Renal Sensory Nerves / Part III: Pathophysiological States / Efferent Renal Sympathetic Nerves / Afferent Renal Sensory Nerves / Conclusions / References
| Author | : Brian Freeman |
| Publisher | : McGraw Hill Professional |
| Total Pages | : 588 |
| Release | : 2014-07-06 |
| Genre | : Medical |
| ISBN | : 0071821384 |
A rigorous, high-yield review for the new ABA Part 1: BASIC Examination The year 2014 marks the beginning of a new phase in board certification for anesthesiology residents in the United States. The Part 1 exam is now split into two written examinations: Basic and Advanced. Anesthesiology. Residents who are unable to pass the Basic examination will not be allowed to finish their training. That's why this book is a true must read for every anesthesiology resident. It is the single best way to take the stress out of this make-or-break exam, focus your study on nearly 200 must-know topics found on the board exam outline, and identify your areas of strength and weakness. Written by program directors with many years of board examination advising experience, Anesthesiology Core Review Part One: BASIC Exam is designed to be the cornerstone of your study preparation. Each chapter of Anesthesiology Core Review succinctly summarizes key concepts in basic science and clinical anesthesia practice. Space is conveniently provided throughout the book to add notes from other study resources. Anesthesiology Core Review Part One: BASIC Exam is logical divided into four sections: Basic Science Clinical Sciences Organ-Based Sciences Special Issues in Anesthesiology (covering important topics such as professionalism and licensure, ethics, and patient safety) With its expert authorship and concise yet thorough coverage, Anesthesiology Core Review Part One: BASIC Exam is biggest step you can take to assure effective preparation for the new ABA BASIC Examination.
| Author | : Adel E. Berbari |
| Publisher | : Springer |
| Total Pages | : 858 |
| Release | : 2018-01-25 |
| Genre | : Medical |
| ISBN | : 3319599186 |
This book aims to present a comprehensive classification of hypertensive phenotypes based on underlying target organ involvement. Particular emphasis is placed on review and assessment of clinical presentation, pathophysiologic mechanisms, and possible specific therapeutic options for each hypertension phenotype. Several of these phenotypes are well known and well described in the literature, such as prehypertension, white coat and masked hypertension, isolated systolic hypertension, renovascular hypertension, endocrine hypertension, pediatric hypertension, and gestational hypertension. Other hypertension phenotypes, however, are not widely recognized, being reported only in special reviews; examples include hypertension associated with renal calculus disease and other rarer causes such as Turner syndrome, herbal and medicinal compounds, and pharmacologic agents. A detailed account of the various causes of monogenic hypertension is also included. Finally, a section is devoted to general aspects of hypertension, including the significance of blood pressure indices, the natural course of untreated and treated hypertension, hypertension mechanisms, genetics, and guidelines for blood pressure control.
| Author | : J. Gordon Betts |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2013-04-25 |
| Genre | : |
| ISBN | : 9781947172807 |
| Author | : Hiromichi Suzuki (M.D.) |
| Publisher | : Karger Medical and Scientific Publishers |
| Total Pages | : 181 |
| Release | : 2004 |
| Genre | : Medical |
| ISBN | : 3805577516 |
Chronic kidney disease is one of the world's major public health problems, and the prevalence of kidney failure is rising steadily. Among the risk factors for a faster progression of renal disease are hypertension and proteinuria, many studies clearly demonstrating that hypertension is both a cause and consequence of chronic kidney disease. Namely, renal blood pressure regulation seems to be involved in five major pathophysiological mechanisms (all closely related to the renin-angiotensin system): Pressure-natriuresis, renal sympathetic nervous system, renal blood flow, intraglomerular pressure and tubuloglomerular feedback. This book reviews experimental data which form the basis of our current understanding of the association between hypertension and kidney diseases: The pathogenesis of increased blood pressure, the mechanisms by which systemic hypertension promotes progressive kidney failure, and the impact of antihypertensive agents on experimental renal mechanisms involved in hypertension. Furthermore, the role of angiotensin II receptor blockers in both the control of systemic blood pressure and the reduction of proteinuria is examined in an attempt to define optimal therapeutic strategies to prevent the otherwise inexorable deterioration of renal function in patients with chronic kidney disease.
| Author | : Lindsay Biga |
| Publisher | : |
| Total Pages | : |
| Release | : 2019-09-26 |
| Genre | : |
| ISBN | : 9781955101158 |
A version of the OpenStax text
| Author | : Jonathan D. Kibble |
| Publisher | : McGraw Hill Professional |
| Total Pages | : 448 |
| Release | : 2008-12-07 |
| Genre | : Medical |
| ISBN | : 0071643028 |
Get the BIG PICTURE of Medical Physiology -- and focus on what you really need to know to ace the course and board exams! 4-Star Doody's Review! "This excellent, no-frills approach to physiology concepts is designed to help medical students and other health professions students review the basic concepts associated with physiology for the medical profession. The information is concise, accurate and timely." If you don't have unlimited study time Medical Physiology: The Big Picture is exactly what you need! With an emphasis on what you “need to know” versus “what's nice to know,” and enhanced with 450 full-color illustrations, it offers a focused, streamlined overview of medical physiology. You'll find a succinct, user-friendly presentation designed to make even the most complex concepts understandable in a short amount of time. With just the right balance of information to give you the edge at exam time, this unique combination text and atlas features: A “Big Picture” perspective on precisely what you must know to ace your course work and board exams Coverage of all the essential areas of Physiology, including General, Neurophysiology, Blood, Cardiovascular, Pulmonary, Renal and Acid Base, Gastrointestinal, and Reproductive 450 labeled and explained full-color illustrations 190 board exam-style questions and answers -- including a complete practice test at the end of the book Special icon highlights important clinical information
| Author | : Michael G. Levitzky |
| Publisher | : McGraw Hill Professional |
| Total Pages | : 317 |
| Release | : 2020-12-04 |
| Genre | : Medical |
| ISBN | : 1259641961 |
A clinically relevant, reader -friendly text covering everything the anesthesia provider must know about physiologyThis well-illustrated new resource is the most concise and high-yield presentation of physiology topics available to the anesthesia provider. The authors (who are both educators and clinicians) deliver a complete overview of physiology, but, since this book is written for the anesthesia provider, the bulk of the text is dedicated to cardiovascular and respiratory physiology. Clinical Physiology in Anesthetic Practice distinguishes itself from general medical physiology books by the inclusion of case studies and clinical correlation boxed inserts that emphasize key fact that relate to real-world practice. •Numerous case studies demonstrate the clinical relevance of basic science•The author are experienced educators and clinicians, and know how to present difficult concepts in the most interesting and reader-friendly manner possible•Key Points summarize must-know information, providing an excellent framework for board review
| Author | : Marlies Elger |
| Publisher | : Springer |
| Total Pages | : 116 |
| Release | : 1997-10-10 |
| Genre | : Medical |
| ISBN | : |
Knowledge of the architecture of the renal glomerulus is a prerequisite for understanding both glomerular function and pathology. Glomerular filtration depends on comparably high intracapillary hydrostatic pressures. These high pressures must be balanced by commensurate counterforces to maintain structural integrity. Elevated pressures can damage the glomerulus. The "window" for pressures high enough for effective filtration and yet tolerable to the glomerulus is narrow. Precise regulation is therefore necessary to keep intraglomerular pressure within an appropriate range. This study provides a comprehensive description of the glomerular arterioles, which are the vessels primarily responsible for the regulation of intraglomerular pressures. It thereby describes the structures which may be presumed to generate counterforces needed to assure structural stability. The arterioles are closely associated with the supporting system comprised of the intra- and extraglomerular mesangium. The extraglomerular mesangium forms a spider-like clamp providing a mechanical interconnection of all components of the vascular pole. At the same time, it may act as a tension receptor, i.e. as a sensor of intraglomerular pressures. Due to its intimate relationship to the macula densa, the extraglomerular mesangium receives information on the distal solute delivery and therefore may act as the integrative center within the juxtaglomerular apparatus. The close spatial association between the afferent and efferent arterioles at the vascular pole suggests a direct regulatory interaction between both arterioles. In addition, the specific wall structure of the efferent arteriole exhibiting the features of a shear stress receptor suggests new pathways for feedback regulation of glomerular hemodynamics.
