Lung Water and Solute Exchange
Author | : Norman C. Staub |
Publisher | : |
Total Pages | : 584 |
Release | : 1978-01-01 |
Genre | : |
ISBN | : 9780608002040 |
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Author | : Norman C. Staub |
Publisher | : |
Total Pages | : 584 |
Release | : 1978-01-01 |
Genre | : |
ISBN | : 9780608002040 |
Author | : Joshua Scallan |
Publisher | : Morgan & Claypool Publishers |
Total Pages | : 86 |
Release | : 2010 |
Genre | : Science |
ISBN | : 1615040668 |
The partition of fluid between the vascular and interstitial compartments is regulated by forces (hydrostatic and oncotic) operating across the microvascular walls and the surface areas of permeable structures comprising the endothelial barrier to fluid and solute exchange, as well as within the extracellular matrix and lymphatics. In addition to its role in the regulation of vascular volume, transcapillary fluid filtration also allows for continuous turnover of water bathing tissue cells, providing the medium for diffusional flux of oxygen and nutrients required for cellular metabolism and removal of metabolic byproducts. Transendothelial volume flow has also been shown to influence vascular smooth muscle tone in arterioles, hydraulic conductivity in capillaries, and neutrophil transmigration across postcapillary venules, while the flow of this filtrate through the interstitial spaces functions to modify the activities of parenchymal, resident tissue, and metastasizing tumor cells. Likewise, the flow of lymph, which is driven by capillary filtration, is important for the transport of immune and tumor cells, antigen delivery to lymph nodes, and for return of filtered fluid and extravasated proteins to the blood. Given this background, the aims of this treatise are to summarize our current understanding of the factors involved in the regulation of transcapillary fluid movement, how fluid movements across the endothelial barrier and through the interstitium and lymphatic vessels influence cell function and behavior, and the pathophysiology of edema formation. Table of Contents: Fluid Movement Across the Endothelial Barrier / The Interstitium / The Lymphatic Vasculature / Pathophysiology of Edema Formation
Author | : Norman C. Staub |
Publisher | : |
Total Pages | : 584 |
Release | : 1978 |
Genre | : |
ISBN | : 9780608002040 |
Author | : Norman C. Staub |
Publisher | : |
Total Pages | : 592 |
Release | : 1978 |
Genre | : Medical |
ISBN | : 9780824763794 |
Author | : H.K. Chang |
Publisher | : CRC Press |
Total Pages | : 568 |
Release | : 1993-09-21 |
Genre | : Medical |
ISBN | : 9780824788490 |
This work presents cellular and clinical studies of solute and water transport across the membranes that cover the distal surfaces of the lungs, detailing both selective and non-selective solute diffusion. It investigates evidence of active movement in preparations ranging from intact animals and whole lungs to cells grown upon various substrates, isolated cells and cell membranes.
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.
Author | : J. Gordon Betts |
Publisher | : |
Total Pages | : 0 |
Release | : 2013-04-25 |
Genre | : |
ISBN | : 9781947172807 |
Author | : Thomas Woodcock |
Publisher | : Cambridge Scholars Publishing |
Total Pages | : 282 |
Release | : 2019-10-23 |
Genre | : Medical |
ISBN | : 1527542025 |
This book is essential reading for medical or veterinary practitioners who need to understand the new fluid physiology and to apply it to the safe care of patients. The Starling principle is one of medicine’s most important concepts and originates from Ernest Starling’s laboratory research 120 years ago. However, inappropriate fluid therapy is now recognised as harming and even killing thousands of patients every year. In 2004, a landmark study was published which confirmed the hypotheses put forward by Sheldon Weinbaum and Charles Michel, among other physiologists, that, in most tissues and in most situations, capillaries filter fluid to the interstitium, but do not reabsorb it. This book draws together for the first time the evolving science of the steady-state Starling principle and the clinical evidence that reveals its applicability to safer patient care. It is a thorough re-appraisal of the basics of fluid therapy. The mantra of colloid boluses for plasma volume resuscitation and colloid-free isotonic salt solution for extracellular fluid volume does not explain observations from blinded clinical trials, and the expectation of benefit for resuscitation with colloids, particularly in respect of oedema, has not materialised. Now that there is consensus that colloid volume therapy should not be used in critically-ill patients, there is a pressing need for a new paradigm for fluid therapy. This book proposes an improved paradigm that takes into consideration the Starling principle, which has been neglected by clinicians and revised by physiologists in recent years. It retires the view of colloids as preferred plasma substitutes, and focuses instead on the central volume of distribution of an infused fluid, its rate of distribution to a peripheral volume, and its rate of excretion. In short, it emphasises volume kinetics.
Author | : Alexandre Mebazaa |
Publisher | : Springer Science & Business Media |
Total Pages | : 922 |
Release | : 2009-12-24 |
Genre | : Medical |
ISBN | : 1846287820 |
For many years, there has been a great deal of work done on chronic congestive heart failure while acute heart failure has been considered a difficult to handle and hopeless syndrome. However, in recent years acute heart failure has become a growing area of study and this is the first book to cover extensively the diagnosis and management of this complex condition. The book reflects the considerable amounts of new data reported and many new concepts which have been proposed in the last 3-4 years looking at the epidemiology, diagnostic and treatment of acute heart failure.
Author | : Lindsay Biga |
Publisher | : |
Total Pages | : |
Release | : 2019-09-26 |
Genre | : |
ISBN | : 9781955101158 |
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