Mechanisms of Vascular Disease

Mechanisms of Vascular Disease
Author: Robert Fitridge
Publisher: University of Adelaide Press
Total Pages: 589
Release: 2011
Genre: Medical
ISBN: 1922064009

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.

The Endothelium

The Endothelium
Author: Michel Félétou
Publisher: Morgan & Claypool Publishers
Total Pages: 309
Release: 2011
Genre: Science
ISBN: 1615041230

The endothelium, a monolayer of endothelial cells, constitutes the inner cellular lining of the blood vessels (arteries, veins and capillaries) and the lymphatic system, and therefore is in direct contact with the blood/lymph and the circulating cells. The endothelium is a major player in the control of blood fluidity, platelet aggregation and vascular tone, a major actor in the regulation of immunology, inflammation and angiogenesis, and an important metabolizing and an endocrine organ. Endothelial cells controls vascular tone, and thereby blood flow, by synthesizing and releasing relaxing and contracting factors such as nitric oxide, metabolites of arachidonic acid via the cyclooxygenases, lipoxygenases and cytochrome P450 pathways, various peptides (endothelin, urotensin, CNP, adrenomedullin, etc.), adenosine, purines, reactive oxygen species and so on. Additionally, endothelial ectoenzymes are required steps in the generation of vasoactive hormones such as angiotensin II. An endothelial dysfunction linked to an imbalance in the synthesis and/or the release of these various endothelial factors may explain the initiation of cardiovascular pathologies (from hypertension to atherosclerosis) or their development and perpetuation. Table of Contents: Introduction / Multiple Functions of the Endothelial Cells / Calcium Signaling in Vascular Cells and Cell-to-Cell Communications / Endothelium-Dependent Regulation of Vascular Tone / Conclusion / References

Anatomy & Physiology

Anatomy & Physiology
Author: Lindsay Biga
Publisher:
Total Pages:
Release: 2019-09-26
Genre:
ISBN: 9781955101158

A version of the OpenStax text

Vascular Control of Hemostasis

Vascular Control of Hemostasis
Author: Victor vanHinsbergh
Publisher: CRC Press
Total Pages: 336
Release: 1996-05-28
Genre: Medical
ISBN: 9783718657964

Hemostasis represents a group of balanced activities that keep the blood flowing It is a complete response system which has developed to guarantee blood fluidity and to limit blood loss after wounding, and adapts after exposure to infectious micro-organisms The failure of this control system causes ischemia, severe damage to the distal tissues and, ultimately, death This book provides an up-to-date and comprehensive account of the control of hemostasis by vascular cells It is an indispensable guide for researchers in hemostasis and vascular biology, from the post-graduate level onwards It will also be of great interest to clinicians in vascular medicine and cardiology Topics covered include: hemostatic properties of the vessel wall; anticoagulant properties of the vessel wall; other aspects of coagulation; and changes in vascular hemostatic properties

The Cerebral Circulation

The Cerebral Circulation
Author: Marilyn J. Cipolla
Publisher: Biota Publishing
Total Pages: 82
Release: 2016-07-28
Genre: Medical
ISBN: 1615047239

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.

Regulation of Tissue Oxygenation, Second Edition

Regulation of Tissue Oxygenation, Second Edition
Author: Roland N. Pittman
Publisher: Biota Publishing
Total Pages: 117
Release: 2016-08-18
Genre: Medical
ISBN: 1615047212

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.

Cardiac Catheterization for Congenital Heart Disease

Cardiac Catheterization for Congenital Heart Disease
Author: Gianfranco Butera
Publisher: Springer Nature
Total Pages: 1102
Release: 2021-07-22
Genre: Medical
ISBN: 3030698564

The second edition of this handbook is an up-to-date guide to the application of catheter-based interventions across the entire age range of congenital heart disease patients, from fetal life through to adulthood. It considers the changes and improvements that have occurred during the last few years in terms of new procedures, new tools and devices (in particular in the field of valves), new imaging and pre-procedural strategies, such as 3D-printing, 3D- rotational angiography and fusion imaging. It provides readers with clear instructions on techniques for vascular access, valve dilatation, angioplasty, stent implantation, defect closure, defect creation, pulmonary valve implantation and on the hybrid approach, as well as on various other procedures. As in the first edition, topics are approached using a step-by-step format, ensuring that readers can immediately access the information relevant to their daily practice. Numerous explanatory figures and drawings are included in each chapter in order to further clarify how to plan, perform and evaluate diagnostic and interventional procedures in the field of congenital heart disease. It also highlights important tips and tricks that will assist health operators in achieving optimal outcomes, and includes an appendix with additional general equations and BSA, and oxygen consumption charts. This practical guide will be a valuable resource for surgeons and cardiologists in their daily clinical practice.

Haemostasis in Surgery

Haemostasis in Surgery
Author: Nadey S. Hakim
Publisher: Imperial College Press
Total Pages: 326
Release: 2007
Genre: Medical
ISBN: 1860946917

This unique volume presents the cutting edge of haemostasis in surgery and includes the advances in the science pertaining to related important medical and surgical problems. It is the only book that includes all the surgical subspecialties focusing specifically on the problems of haemostasis in each field. State-of-the-art laboratory and clinical reviews are included and modern devices used in the different specialties are also covered. The contributors are well-known authorities in their special fields and haematological area. Each is covered comprehensively with special emphasis on unanswered questions. The book is addressed to all surgeons and physicians with an interest in this exciting field.