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Author : Wolfgang Schaper
Publisher : Unknown
Page : 300 pages
File Size : 52,5 Mb
Release : 1971
Category : Medical
ISBN : UOM:39015000893266
Author : Wolfgang Schaper,Jutta Schaper
Publisher : Springer Science & Business Media
Page : 411 pages
File Size : 44,6 Mb
Release : 2012-12-06
Category : Medical
ISBN : 9781461530923
Collateral blood vessels develop by growth of pre or newly formed structures in almost all vascular provinces as a consequence of progressing stenosis of the main artery. These alternative routes of blood supply are potentially able to alter the course of vascular disease. Collateral development is a time consuming process, and arterial stenosis and occlusion often progress faster than growth of the alternative routes. The authors' ultimate goal is to provide a better understanding of collateral growth in order to pave the way for improving the conditions for these potentially selfhealing processes. These were programmed by nature but have not been perfected, probably because defenses against arterial disease had not been put under the pressure of natural selection.
Author : Christian Seiler
Publisher : Springer Science & Business Media
Page : 427 pages
File Size : 53,7 Mb
Release : 2009-06-12
Category : Medical
ISBN : 9781848823426
The sober explanation for this book is a call by the Springer-Verlag, London, to edit a publication on ‘The functional relevance of the collateral circulation’ of the heart. Alternatively, it could be ‘sold’ as the result of my intention to reduce entropy of 18 years of scientific work on the topic of the coronary circulation, which was itself meant to diminish the amount of ‘useless’ energy. Such a process of reducing disarray in a system with the aim of grasping it better is related to simplification, which carries the risk of introducing error. This can be exemplified by the historic view of angina pectoris, which used to be simplified as being always fatal, thus obscuring for nearly two centuries the view of a ‘self-healing’ mechanism such as the collateral circulation of the heart. It would be na? ̈ve, to assume the present work to be free of erroneous oversimplification, because the very nature of scientific work is related to generating (simple) hypotheses with their subsequent falsification. In that context and bluntly, my primary interest in the field of the collateral circulation was not initiated with a vision of eradicating the consequences of coronary artery disease (CAD) by promoting the growth of natural bypasses. The time for such sizeable ideas had passed in the 1970s with the start of the work by Wolfgang Schaper.
Author : Wolfgang Schaper
Publisher : Unknown
Page : 128 pages
File Size : 48,6 Mb
Release : 1971
Category : Electronic
ISBN : OCLC:1067811503
Author : Michitoshi Inoue,Masatsugu Hori,Shoichi Imai,Robert M. Berne
Publisher : Springer Science & Business Media
Page : 330 pages
File Size : 45,9 Mb
Release : 2013-11-09
Category : Medical
ISBN : 9784431683674
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 : Kunio Okuda,Jean-Pierre Benhamou
Publisher : Springer Science & Business Media
Page : 554 pages
File Size : 41,7 Mb
Release : 2013-11-09
Category : Medical
ISBN : 9784431683612
Portal hypertension is the abnormal pathophysiologic state that develops in liver cirrhosis and certain other disorders with characteristic clinical and hemodynamic features. There has been great progress in our under standing and management of portal hypertension, particularly in the diagnostic and therapeutic approaches. The so-called Banti's syndrome, a disorder whose existence had long been questioned, is now a well-defined portal hypertensive disease. The recently introduced Doppler ftowmetry is currently yielding new information on portal hemodynamics. Endoscopic sclerotherapy and beta-blockers have come to be widely used in the man agement and prevention of variceal bleeding. In spite of all these advances, a number of unsolved questions remain, such as whether sclerotherapy, pharmacotherapy or surgery is warranted for prevention of bleeding, which is more effective as an elective treatment, the surgical or endoscopic approach, and whether surgical portacaval shunt should be totally replaced by selective shunt operations. These new developments and problems are clearly and comprehensively described and discussed by the foremost authorities in 44 chapters, which are divided into five sections: 1) Patho physiology, 2) Hemodynamic Investigations, 3) Imaging Investigations, 4) Clinical and Pathological Features, and 5) Esophageal and Gastrointestinal Bleeding. The primary goal of this monograph, to provide a framework of patho physiology of portal hypertension with authoritative descriptions of the clinical and laboratory manifestations of various portal hypertensive dis orders, has clearly been achieved by these excellent contributions.
Author : Peter Lanzer
Publisher : Springer
Page : 5004 pages
File Size : 51,9 Mb
Release : 2015-03-30
Category : Medical
ISBN : 3642370772
Vascular management and care has become a truly multidisciplinary enterprise as the number of specialists involved in the treatment of patients with vascular diseases has steadily increased. While in the past, treatments were delivered by individual specialists, in the twenty-first century a team approach is without doubt the most effective strategy. In order to promote professional excellence in this dynamic and rapidly evolving field, a shared knowledge base and interdisciplinary standards need to be established. Pan Vascular Medicine, 2nd edition has been designed to offer such an interdisciplinary platform, providing vascular specialists with state-of-the art descriptive and procedural knowledge. Basic science, diagnostics, and therapy are all comprehensively covered. In a series of succinct, clearly written chapters, renowned specialists introduce and comment on the current international guidelines and present up-to-date reviews of all aspects of vascular care.
Author : Marilyn J. Cipolla
Publisher : Biota Publishing
Page : 82 pages
File Size : 43,5 Mb
Release : 2016-07-28
Category : Medical
ISBN : 9781615047239
This e-book will review special features of the cerebral circulation and how they contribute to the physiology of the brain. It describes structural and functional properties of the cerebral circulation that are unique to the brain, an organ with high metabolic demands and the need for tight water and ion homeostasis. Autoregulation is pronounced in the brain, with myogenic, metabolic and neurogenic mechanisms contributing to maintain relatively constant blood flow during both increases and decreases in pressure. In addition, unlike peripheral organs where the majority of vascular resistance resides in small arteries and arterioles, large extracranial and intracranial arteries contribute significantly to vascular resistance in the brain. The prominent role of large arteries in cerebrovascular resistance helps maintain blood flow and protect downstream vessels during changes in perfusion pressure. The cerebral endothelium is also unique in that its barrier properties are in some way more like epithelium than endothelium in the periphery. The cerebral endothelium, known as the blood-brain barrier, has specialized tight junctions that do not allow ions to pass freely and has very low hydraulic conductivity and transcellular transport. This special configuration modifies Starling's forces in the brain microcirculation such that ions retained in the vascular lumen oppose water movement due to hydrostatic pressure. Tight water regulation is necessary in the brain because it has limited capacity for expansion within the skull. Increased intracranial pressure due to vasogenic edema can cause severe neurologic complications and death.
Author : Javier Escaned,Justin Davies
Publisher : Springer
Page : 313 pages
File Size : 49,9 Mb
Release : 2017-08-10
Category : Medical
ISBN : 9781447152453
Since the introduction of coronary angiography, a key technique in understanding coronary artery disease, a number of paradigms regarding its study and interpretation have taken place. Following an emphasis on improved angiographic and subsequent intracoronary imaging techniques, functional assessment of coronary circulation has demonstrated to have major implications for diagnosis and treatment of coronary artery disease. Fractional flow reserve, a pressure derived index of stenosis severity, constitutes the best example of the current importance of physiological assessment in clinical practice. However, the acceptance of FFR by cardiologists contrasts with important voids in knowledge on the basic principles of coronary physiology and of other available techniques that, as an alternative to FFR, allow a more comprehensive assessment of coronary circulation. This is particularly noticeable in the assessment of microcirculation, an unavoidable compartment of coronary circulation that is frequently affected in acute coronary syndromes of in the presence of cardiovascular risk factors or non-coronary heart disease. A deeper understanding of the relationship between epicardial vessel and microcirculatory involvement has started with the advent of newer imaging techniques like invasive optical coherence tomography, and non-invasive CT and NMR techniques. This book aims to be an indispensable tool for clinicians and researches in the field of coronary artery disease. It provides a balanced, comprehensive review of anatomy, physiology and available techniques, discusses both the diagnosis of epicardial vessel and microcirculatory disease, the impact of different diseases at different levels of coronary circulation, and the best way to address a separate or combined assessment of different levels of coronary circulation.
Author : Wolfgang Schaper,Jutta Schaper
Publisher : Springer Science & Business Media
Page : 371 pages
File Size : 52,9 Mb
Release : 2006-04-11
Category : Medical
ISBN : 9781402081262
Emphasizes the research activities of Germany’s Nauheim Institute of the Max Planck Society and its group of investigators both past and present, in the field of collateral artery growth. Incorporates a multidisciplinary in vivo approach to the study of arteriogenesis that includes molecular approaches with classical physiology and immunohistochemistry. Full color throughout and well illustrated.
Author : David J. Barron
Publisher : Cambridge University Press
Page : 147 pages
File Size : 52,8 Mb
Release : 2018-05-17
Category : Medical
ISBN : 9781107034013
A bespoke, comprehensive and concise guide to the core competencies and latest management in congenital heart surgery.
Author : Dan Simionescu,Agneta Simionescu
Publisher : BoD – Books on Demand
Page : 466 pages
File Size : 52,5 Mb
Release : 2017-04-05
Category : Medical
ISBN : 9789535130239
The purpose of this book is to highlight novel advances in the field and to incentivize scientists from a variety of fields to pursue angiogenesis as a research avenue. Blood vessel formation and maturation to capillaries, arteries, or veins is a fascinating area which can appeal to multiple scientists, students, and professors alike. Angiogenesis is relevant to medicine, engineering, pharmacology, and pathology and to the many patients suffering from blood vessel diseases and cancer, among others. We are hoping that this book will become a source of inspiration and novel ideas for all.
Author : Peter Lanzer
Publisher : Springer
Page : 1891 pages
File Size : 44,8 Mb
Release : 2018-04-30
Category : Medical
ISBN : 9783319559940
This book is a fully updated and revised second edition of a highly successful text in which a new concept of knowledge mining, based on explication and transfer of interventional knowledge of experts, has been implemented. The dedicated training program that is set out will serve the needs of all interventional operators, whether cardiologists, vascular surgeons, vascular specialists, or radiologists, enabling them to achieve a consistent expert level across the entire broad spectrum of catheter-based interventions. Operator skills – and in particular decision-making and strategic skills – are the most critical factors for the outcome of catheter-based cardiovascular interventions. Currently, such skills are commonly developed by the empirical trial and error method only. The explicit teaching, training, and learning approach adopted in this book permits the rapid transfer of interventional knowledge and enables individual operators to negotiate steep learning curves and acquire complex skills in a highly efficient manner. It will thereby offer invaluable assistance in meeting successfully the challenges of modern cardiovascular care.
Author : László Csiba,Claudio Baracchini
Publisher : Cambridge University Press
Page : 333 pages
File Size : 48,9 Mb
Release : 2016-04-28
Category : Medical
ISBN : 9781107659155
Neurosonology is non-invasive, portable, and has excellent temporal resolution, making it a valuable and increasingly popular tool for the diagnosis and monitoring of neurological conditions when compared to other imaging techniques. This guide looks beyond the use of neurovascular ultrasound in stroke to encompass a wide range of other neurological diseases and emergencies. It offers a practical approach to the examination of patients, interpretation of ultrasound studies, and the application of neurosonology to the development of management and treatment strategies. Each chapter incorporates a thorough and clear procedural methodology alongside scanning tips for trainees; this step-by-step approach is further enhanced by example images and focused diagnostic questions. Authored and edited by international experts, this practical manual of neurosonology is an invaluable resource for neurologists, neurosurgeons, intensivists, radiologists, and ultrasonographers.
Author : N.H. Pijls,B. de Bruyne
Publisher : Springer Science & Business Media
Page : 348 pages
File Size : 40,5 Mb
Release : 2013-06-29
Category : Medical
ISBN : 9789401588348
Cardiologists must answer three important questions when evaluating and treating patients with a coronary artery stenosis. As a physiologist: "What is the effect of this stenosis on coronary blood flow and myocardial function?"; as a clinician: " Is this lesion responsible for the patient's symptoms?"; and finally as an interventionalist: "Will revascularization of this artery improve the patient?" Fundamentally, the answer to these questions can be given to a large extent by measuring coronary pressure. That is the rationale of writing this book. 1. 1 Historical overview. Andreas Gruentzig and most interventional cardiologists in the early days of PTCA, had the intuitive feeling that pressure measurements could help to establish the severity of a coronary stenosis and to monitor the progress and result of a coronary intervention. At that time, measuring coronary pressure by the balloon catheter was part of a standard procedure. A residual transstenotic gradient of less than 15 mmHg was generally considered as a good result. Later, however, it turned out that measuring these (resting) gradients with balloon catheters was inaccurate an only had a limited prognostic value. Moreover, because there was no consistent theory to correlate pressure measurements to blood flow, the interest in measuring coronary pressures faded and disappeared almost completely with the introduction of new balloon catheters not intended for pressure measurement.
