Basic And Clinical Understanding Of Microcirculation

Author : Kaneez Fatima Shad,Nazar Luqman,Seyed Soheil Saeedi Saravi
Publisher : BoD – Books on Demand
Page : 168 pages
File Size : 46,9 Mb
Release : 2020-07-22
Category : Medical
ISBN : 9781789855517

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Basic and Clinical Understanding of Microcirculation by Kaneez Fatima Shad,Nazar Luqman,Seyed Soheil Saeedi Saravi Pdf

Microcirculation is key to providing enough nutrition and oxygen from head to toe. This is possible only through an extensive network of blood vessels spread around the body. Effect of microcirculation abnormalities stretch beyond one’s comprehension. The effects could be felt at any age, from the foetal life to the adulthood. The chapters present in this book describe how these abnormalities could lead to diseases such as atherosclerosis, thrombosis, diabetes, hypertension. Disorders of microcirculation could be related to the structural and/or functional damage to the inner lining of the blood vessels. Early identification of these disorders could benefit many ailments including cardiovascular and cerebrovascular diseases such as heart attack and stroke.

Author : Ronald F. Tuma,Walter N. Duran,Klaus Ley
Publisher : Academic Press
Page : 1000 pages
File Size : 42,7 Mb
Release : 2011-04-28
Category : Science
ISBN : 0080569935

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Microcirculation by Ronald F. Tuma,Walter N. Duran,Klaus Ley Pdf

This reference is a volume in the Handbook of Physiology, co-published with The American Physiological Society. Growth in knowledge about the microcirculation has been explosive with the field becoming fragmented into numerous subdisciplines and subspecialties. This volume pulls all of the critical information into one volume. Meticulously edited and reviewed. Benefit: Provides investigators a unique tool to explore the significance of their findings in the context of other aspects of the microcirculation. In this way, the updated edition has a direct role in helping to develop new pathways of research and scholarship Highlights the explosive growth in knowledge about the microcirculation including the biology of nitric oxide synthase (NOS), endothelial cell signaling, angiogenesis, cell adhesion molecules, lymphocyte trafficking, ion channels and receptors, and propagated vasomotor responses. Benefit: Microcirculatory biology has become fragmented into numerous sub-disciplines and subspecialties, and these reference reintegrates the information in one volume

Author : D. Neil Granger,Elena Senchenkova
Publisher : Morgan & Claypool Publishers
Page : 99 pages
File Size : 47,9 Mb
Release : 2010
Category : Medical
ISBN : 9781615041657

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Inflammation and the Microcirculation by D. Neil Granger,Elena Senchenkova Pdf

The microcirculation is highly responsive to, and a vital participant in, the inflammatory response. All segments of the microvasculature (arterioles, capillaries, and venules) exhibit characteristic phenotypic changes during inflammation that appear to be directed toward enhancing the delivery of inflammatory cells to the injured/infected tissue, isolating the region from healthy tissue and the systemic circulation, and setting the stage for tissue repair and regeneration. The best characterized responses of the microcirculation to inflammation include impaired vasomotor function, reduced capillary perfusion, adhesion of leukocytes and platelets, activation of the coagulation cascade, and enhanced thrombosis, increased vascular permeability, and an increase in the rate of proliferation of blood and lymphatic vessels. A variety of cells that normally circulate in blood (leukocytes, platelets) or reside within the vessel wall (endothelial cells, pericytes) or in the perivascular space (mast cells, macrophages) are activated in response to inflammation. The activation products and chemical mediators released from these cells act through different well-characterized signaling pathways to induce the phenotypic changes in microvessel function that accompany inflammation. Drugs that target a specific microvascular response to inflammation, such as leukocyte-endothelial cell adhesion or angiogenesis, have shown promise in both the preclinical and clinical studies of inflammatory disease. Future research efforts in this area will likely identify new avenues for therapeutic intervention in inflammation. Table of Contents: Introduction / Historical Perspectives / Anatomical Considerations / Impaired Vasomotor Responses / Capillary Perfusion / Angiogenesis / Leukocyte-Endothelial Cell Adhesion / Platelet-Vessel Wall Interactions / Coagulation and Thrombosis / Endothelial Barrier Dysfunction / Epilogue / References

Author : Marilyn J. Cipolla
Publisher : Biota Publishing
Page : 82 pages
File Size : 54,9 Mb
Release : 2016-07-28
Category : Medical
ISBN : 9781615047239

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The Cerebral Circulation by Marilyn J. Cipolla Pdf

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 : Roland N. Pittman
Publisher : Biota Publishing
Page : 117 pages
File Size : 55,8 Mb
Release : 2016-08-18
Category : Medical
ISBN : 9781615047215

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Regulation of Tissue Oxygenation, Second Edition by Roland N. Pittman Pdf

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.

Author : Reizo Inoki,Teruo Kudo,Leif M. Olgart
Publisher : Springer Science & Business Media
Page : 503 pages
File Size : 54,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400904217

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Dynamic Aspects of Dental Pulp by Reizo Inoki,Teruo Kudo,Leif M. Olgart Pdf

This book presents a circumspective overview and update of the present existing knowledge of the biology, chemistry and pathophysiology of the dental pulp. It details numerous observations of a group of highly specialized investigators who have united in the common purpose of presenting their observations for the benefit of clinicians, teachers, researchers and students. Fortunately, the dental literature presents abundant research findings about pulp biology and the pulp's responses to various stimuli. This abundance has resulted in an increased interest and expansion of research on this subject. For example, publications abound on the response of pulp tissue to various medications and to a variety of types of dental materials which may be placed near to or at some distance from the pulp through the medium of dentine. One of the reasons the pulp is of such interest is that it not only provides the vitality to the teeth but also produces the dentine - both the primary and secondary, as well as reparative. The latter-type dentine is a result of the pulp's functions in response to disease as the former dentine is in response to health. As an example, some investigators have reported the effects of cutting of dentine and the placement of restorations in dentine which in turn reflect changes on the pulp tissue. These reports have raised a number of questions, which in turn have created a need for answers.

Author : Maria Dorobantu,Lina Badimon
Publisher : Springer Nature
Page : 298 pages
File Size : 53,6 Mb
Release : 2019-11-04
Category : Medical
ISBN : 9783030281991

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Microcirculation by Maria Dorobantu,Lina Badimon Pdf

This comprehensive reference book of coronary microcirculation broadly covers theoretical aspects, clinical cases and therapeutic considerations from an innovative perspective. Topics covered include: ischemic heart disease, silent cerebral damage, heart failure, left ventricular hypertrophy arrhythmias, and cerebral and renal microcirculation. Microcirculation: From Bench to Bedside underlines the clinical importance of addressing coronary microcirculation with relevant clinical examples that are often encountered by practitioners. It therefore provides a critical resource on microcirculation for both specialist and non-specialist practitioners.

Author : Helena Lenasi
Publisher : BoD – Books on Demand
Page : 288 pages
File Size : 44,5 Mb
Release : 2016-10-26
Category : Medical
ISBN : 9789535127307

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Microcirculation Revisited by Helena Lenasi Pdf

The book provides a comprehensive overview of selected topics in microcirculation, from physiology to pathophysiology including molecular mechanisms and clinical aspects. It contains 10 chapters written by reputed authors, which comprehensively sum up the current knowledge and some interesting new insights in the field of microcirculation. It will be useful to a broad range of audience, from students to highly profiled experts, helping them to expand their knowledge on microcirculation and opening up additional questions for further investigation.

Author : Frithjof Hammersen,K. Messmer
Publisher : Unknown
Page : 120 pages
File Size : 50,7 Mb
Release : 1990
Category : Medical
ISBN : UOM:39015017752976

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Cerebral Microcirculation by Frithjof Hammersen,K. Messmer Pdf

Author : John A. Kellum,Rinaldo Bellomo,Claudio Ronco
Publisher : Oxford University Press
Page : 329 pages
File Size : 54,5 Mb
Release : 2016
Category : Medical
ISBN : 9780190225537

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Continuous Renal Replacement Therapy by John A. Kellum,Rinaldo Bellomo,Claudio Ronco Pdf

Continuous Renal Replacement Therapy (CRRT) is the standard of care for management of critically ill patients with acute renal failure. Part of the Pittsburgh Critical Care series, Continuous Renal Replacement Therapy provides concise, evidence-based, bedside guidance about this treatment modality, offering quick reference answers to clinicians' questions about treatments and situations encountered in daily practice. Organized into sections on theory, practice, special situations, and organizational issues, this volume provides a complete view of CRRT theory and practice. Tables summarize and highlight key points, and key studies and trials are included in each chapter. The second edition has been updated to include a new chapter on the use of biomarkers to aid in patient selection and timing, extensive revisions on terminology and nomenclature to match current standards, and the most up-to-date information on newly developed CRRT machines.

Author : Javier Escaned,Justin Davies
Publisher : Springer
Page : 313 pages
File Size : 52,7 Mb
Release : 2017-08-10
Category : Medical
ISBN : 9781447152453

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Physiological Assessment of Coronary Stenoses and the Microcirculation by Javier Escaned,Justin Davies Pdf

​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 : Enrico Agabiti-Rosei,Anthony M. Heagerty,Damiano Rizzoni
Publisher : Springer Nature
Page : 215 pages
File Size : 41,6 Mb
Release : 2020-10-03
Category : Medical
ISBN : 9783030478018

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Microcirculation in Cardiovascular Diseases by Enrico Agabiti-Rosei,Anthony M. Heagerty,Damiano Rizzoni Pdf

This book offers an extensive review of the most recent data on the pathophysiological role of structural and functional alterations in the microcirculation, particularly focusing on hypertension and diabetes. It covers several relevant and innovative aspects, including the possible mechanisms involved in the development of microvascular remodeling and rarefaction, the technical approaches available for the detection of microvascular alterations, including non-invasive evaluations, the prognostic role of changes in small resistance artery structure, the possibility of preventing or regressing such alterations with appropriate treatment, and the potential clinical advantages of such intervention. A number of innovative areas of research are considered, including the role of the immune system, inflammation and oxidative stress in the development of microvascular alterations. Lastly, it examines the availability of recent non-invasive methods for the evaluation of small resistance artery morphology in the retina, which in the near future may provide a useful tool for the stratification of cardiovascular risk and even for clinical decisions regarding drug treatment, thus providing physicians with a clinically relevant instrument for improving and optimizing the management of hypertensive and diabetic patients. The book provides valuable, clinically relevant information for specialists (cardiology, internal medicine, and endocrinology) and general practitioners, and also offers novel and stimulating data to basic and clinical researchers.

Author : Basil F. Matta,David K. Menon,Martin Smith
Publisher : Cambridge University Press
Page : 128 pages
File Size : 45,6 Mb
Release : 2011-10-13
Category : Medical
ISBN : 9781139499859

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Core Topics in Neuroanaesthesia and Neurointensive Care by Basil F. Matta,David K. Menon,Martin Smith Pdf

Core Topics in Neuroanesthesia and Neurointensive Care is an authoritative and practical clinical text that offers clear diagnostic and management guidance for a wide range of neuroanesthesia and neurocritical care problems. With coverage of every aspect of the discipline by outstanding world experts, this should be the first book to which practitioners turn for easily accessible and definitive advice. Initial sections cover relevant anatomy, physiology and pharmacology, intraoperative and critical care monitoring and neuroimaging. These are followed by detailed sections covering all aspects of neuroanesthesia and neurointensive care in both adult and pediatric patients. The final chapter discusses ethical and legal issues. Each chapter delivers a state-of-the art review of clinical practice, including outcome data when available. Enhanced throughout with numerous clinical photographs and line drawings, this practical and accessible text is key reading for trainee and consultant anesthetists and critical care specialists.

Author : John A Bevan,Gabor Kaley,Gabor M Rubanyi
Publisher : Springer
Page : 376 pages
File Size : 45,5 Mb
Release : 2013-05-27
Category : Science
ISBN : 9781461475279

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Flow-Dependent Regulation of Vascular Function by John A Bevan,Gabor Kaley,Gabor M Rubanyi Pdf

Exactly sixty years ago Schretzenmayer provided the first experimental proof that changes in blood ftow can affect the diameter oflarge arteries. Since then, support has been growing for the idea that intraluminal blood ftow plays an important role in regulating not only the tone of blood vessels, but also their caliber and structure. Investigations of the&e phenomena have been given a strong impetus by the discovery that the endothelium can modulate the tone of underlying vascular smooth muscle via the release of a number of vasoactive substances. Investigators often diverge in their opinions regarding the nature of the vascular wall response to blood ftow and the mechanisms involved. This book is the first summary of our state of knowledge and the nature of the research carried out on ftow-related changes. Early chapters review involvement of shear-stress-dependent events in the circulation as a whole. They cover the biophysical principles of ftuid transport, the cellular signal transduction path ways, and the molecular biology and biochemistry of ftow-induced changes in endothelial cells. Later chapters provide an in-depth summary of the regula tion of vascular muscle tone by ftow. They include historical perspectives, evi dence that ftow-induced vasodilation is primarily endothelium-dependent and that it can induce constriction, and details on ftow-dependent regulation in regional vascular beds. Several chapters emphasize the endothelial activation by shear stress and its importance in the control offtow in the microcirculation.

Author : Filippo Crea,Gaetano A. Lanza,Paolo G. Camici
Publisher : Springer Science & Business Media
Page : 257 pages
File Size : 49,5 Mb
Release : 2013-08-15
Category : Medical
ISBN : 9788847053670

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Coronary Microvascular Dysfunction by Filippo Crea,Gaetano A. Lanza,Paolo G. Camici Pdf

In the past two decades a number of studies have shown that abnormalities in the function and structure of coronary microcirculation can be detected in several cardiovascular diseases. On the basis of the clinical setting in which it occurs, coronary microvascular dysfunction (CMD) can be classified into four types: CMD in the absence of any other cardiac disease; CMD in myocardial diseases; CMD in obstructive epicardial coronary artery disease; and iatrogenic CMD. In some instances CMD represents an epiphenomenon, whereas in others it represents an important marker of risk or may contribute to the pathogenesis of myocardial ischemia, thus becoming a possible therapeutic target. This book provides an update on coronary physiology and a systematic assessment of microvascular abnormalities in cardiovascular diseases, in the hope that it will assist clinicians in prevention, detection and management of CMD in their everyday activity.