Download or read book Hepatic Circulation written by W. Wayne Lautt and published by Morgan & Claypool Publishers. This book was released on 2009-11-17 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hepatic circulation is unique among vascular beds. The most obvious unique features include the dual vascular supply; the mechanism of intrinsic regulation of the hepatic artery (the hepatic arterial buffer response); the fact that portal blood flow, supplying two thirds of liver blood flow, is not controlled directly by the liver; the fact that 20% of the cardiac output rushes through the most vascularized organ in the body, driven by a pressure gradient of only a few millimeters of mercury; the extremely distensible capacitance and venous resistance sites; the unidirectional acinar blood flow that regulates parenchymal cell metabolic specialization; and the high concentration of macrophagic (Kupffer) cells filtering the blood. The liver is the only organ reported to have regional blood flow monitored by the autonomic nervous system. This mechanism, when dysfunctional, accounts for the hepatorenal syndrome and offers a mechanistic therapeutic target to treat this syndrome. The trigger for liver regeneration is dependent on hepatic hemodynamics so that chronic liver blood flow regulates liver cell mass. In severe liver disease, the whole body circulation is reorganized, by forming portacaval shunts, to accommodate the increased intrahepatic venous resistance. These shunts protect the venous drainage of the splanchnic organs but lead to loss of major regulatory roles of the liver. The development of knowledge of the hepatic vasculature is presented from a historical perspective with modern concepts summarized based on the perspective of the author's four decades of devotion to this most marvelous of organs. Table of Contents: Acknowledgements / Historical Perspectives / Overview / Fluid Exchange / Capacitance / Resistance in the Hepatic Artery / Resistance in the Venous System / Fetal and Neonatal Hepatic Circulation / In Vivo Pharmacodynamic Approaches / Nitric Oxide / Adenosine / Hepatic Nerves / Hepatic Circulation and Toxicology / Hepatorenal Syndrome / Integrative Hepatic Response to Hemorrhage / Blood Flow Regulation of Hepatocyte Proliferation / Multiple Mechanisms Maintaining a Constant Hepatic Blood Flow to Liver Mass Ratio / Pathopharmacology and Repurposing Drugs as a Research Strategy / References

Download or read book The Gastrointestinal Circulation written by Peter R. Kvietys and published by Morgan & Claypool Publishers. This book was released on 2010 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microcirculation of the gastrointestinal tract is under the control of both myogenic and metabolic regulatory systems. The myogenic mechanism contributes to basal vascular tone and the regulation of transmural pressure, while the metabolic mechanism is responsible for maintaining an appropriate balance between O2 demand and O2 delivery. In the postprandial state, hydrolytic products of food digestion elicit a hyperemia, which serves to meet the increased O2 demand of nutrient assimilation. Metabolically linked factors (e.g., tissue pO2, adenosine) are primarily responsible for this functional hyperemia. The fenestrated capillaries of the gastrointestinal mucosa are relatively permeable to small hydrolytic products of food digestion (e.g., glucose), yet restrict the transcapillary movement of larger molecules (e.g., albumin). This allows for the absorption of hydrolytic products of food digestion without compromising the oncotic pressure gradient governing transcapillary fluid movement and edema formation. The gastrointestinal microcirculation is also an important component of the mucosal defense system whose function is to prevent (and rapidly repair) inadvertent epithelial injury by potentially noxious constituents of chyme. Two pathological conditions in which the gastrointestinal circulation plays an important role are ischemia/reperfusion and chronic portal hypertension. Ischemia/reperfusion results in mucosal edema and disruption of the epithelium due, in part, to an inflammatory response (e.g., increase in capillary permeability to macromolecules and neutrophil infiltration). Chronic portal hypertension results in an increase in gastrointestinal blood flow due to an imbalance in vasodilator and vasoconstrictor influences on the microcirculation. Table of Contents: Introduction / Anatomy / Regulation of Vascular Tone and Oxygenation / Extrinsic Vasoregulation: Neural and Humoral / Postprandial Hyperemia / Transcapillary Solute Exchange / Transcapillary Fluid Exchange / Interaction of Capillary and Interstitial Forces / Gastrointestinal Circulation and Mucosal Defense / Gastrointestinal Circulation and Mucosal Pathology I: Ischemia/Reperfusion / Gastrointestinal Circulation and Mucosal Pathology II: Chronic Portal Hypertension / Summary and Conclusions / References / Author Biography

Download or read book Regulation of Tissue Oxygenation Second Edition written by Roland N. Pittman and published by Biota Publishing. This book was released on 2016-08-18 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Liver Anesthesiology and Critical Care Medicine written by Gebhard Wagener and published by Springer. This book was released on 2018-04-11 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing anesthesiology for liver surgery and especially liver transplantation is highly complex and requires profound expertise in the physiology and pathophysiology of liver disease. This new edition incorporates the latest information in the field and remains the only available book on the topic. It focuses on the practical aspect of liver anesthesiology and critical care, while providing a comprehensive and in depth summary of the knowledge in this field. Most liver transplant centers now have dedicated teams providing anesthesia care during liver transplantations. In the last years there has been a substantial increase in knowledge and improvement in techniques in anesthesiology and critical care of patients undergoing liver surgery and transplant patients. Liver Anesthesiology and Critical Care Medicine, 2nd Edition includes new chapters on chronic liver failure and hepatic cirrhosis, preoperative risk assessment, evidence in liver anesthesiology, the splanchnic and systemic circulation in liver disease and a special focus on analgesia for liver resection including regional techniques. Written for anesthesiologists and critical care physicians caring for patients undergoing liver surgery and transplantation, this book proves to be an essential companion and review book as the number of liver surgeries with higher complexity continue to increase.

Download or read book Liver Pathophysiology written by Pablo Muriel and published by Academic Press. This book was released on 2017-03-02 with total page 917 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liver Pathophysiology: Therapies and Antioxidants is a complete volume on morphology, physiology, biochemistry, molecular biology and treatment of liver diseases. It uses an integral approach towards the role of free radicals in the pathogenesis of hepatic injury, and how their deleterious effects may be abrogated by the use of antioxidants. Written by the most prominent authors in the field, this book will be of use to basic and clinical scientists and clinicians working in the biological sciences, especially those dedicated to the study and treatment of liver pathologies. Presents the most recent advances in hepatology, with a special focus on the role of oxidative stress in liver injury. Provides in vivo and in vitro models to study human liver pathology. Explains the beneficial effects of antioxidants on liver diseases. Contains the most recent and modern treatments of hepatic pathologies, including, but not limited to, stem cells repopulation, gene therapy and liver transplantation.

Download or read book The Genetic Landscape of Diabetes written by Laura Dean and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Basic Physiology for Anaesthetists written by David Chambers and published by Cambridge University Press. This book was released on 2019-07-25 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Easily understood, up-to-date and clinically relevant, this book provides junior anaesthetists with an essential physiology resource.

Download or read book Vascular Disorders of the Liver written by Dominique Valla and published by Springer Nature. This book was released on 2021-12-03 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive account on individually rare, but collectively frequent diseases of the liver. In the first part, conditions such as hepatic vascular malformations, ischemic cholangiopathy, hepatic artery occlusion, sinusoidal conditions and Budd-Chiari syndrome are discussed among others. The second part examines the causes of vascular liver disease namely, coagulation disorders, neoplasm disorders, non-malignant blood disorders, systemic diseases and toxins, among others. The unique expertise of the authors, who are all members of the Vascular Liver Disease Disorders Group, an independent network of researchers with a common interest in Vascular Liver Diseases, are merged for an optimal pragmatic and individualized approach. This book is of interest to a broad range of experts, such as hepatologists, internists, radiologists and angiologists.

Download or read book The Hepatic Circulation and Portal Hypertension written by and published by . This book was released on 1970 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Anesthesiology Core Review written by Brian Freeman and published by McGraw Hill Professional. This book was released on 2014-07-06 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Body MDCT in Small Animals written by Giovanna Bertolini and published by Springer. This book was released on 2017-09-05 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date, technically detailed yet easy-to-read reference book on current clinical applications of MDCT in small animals. It has been designed to serve as the reference book for all MDCT-users, such as veterinary radiologists, imaging technicians, oncologists, surgeons, and non-radiologist clinicians. Individual chapters on novel clinically important topics include applications in endocrinology, oncology, trauma, and cardiovascular CT, as well as sections on organ-specific pathologies and their CT characteristics. The book will also cover main domains of CT, such as thorax and the trauma imaging. Anatomy, clinical aspects, pathology, and CT signs are integrated to provide the reader with the basis for interpretation of MDCT findings. Many excellent 2D multiplanar and 3D figures illustrating typical CT findings of various conditions will serve as a clinical reference for the reader.

Download or read book Cardio Hepatology written by Tatsunori Taniguchi and published by Academic Press. This book was released on 2022-09-20 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardio-Hepatology: Connections Between Hepatic and Cardiovascular Disease provides a direct relationship between the cardiac and hepatic pathologies providing the link between the heart and liver and showing how liver diseases predispose to impairment in heart functioning and vice versa. Considering the growing number of patients living (and living longer) with heart failure and/or congenital heart disease, it is important to know when and how to test for liver disease in this population, how to interpret abnormal test results, and what management is appropriate. Coverage includes what should be done for patients to limit, avoid, or postpone the impairment in the liver functioning induced by heart diseases and the impairment in the heart functioning induced by liver diseases, on the basis of scientific-exposed evidence and pathophysiology knowledge. This comprehensive, extended review of the medical literature is perfect for researchers interested in the connection between cardiology and hepatology as well as clinicians making therapeutic decisions for patients suffering from heart or liver chronic diseases. Reviews and discusses all current knowledge about the interactions between heart and liver pathologies Provides guidance on current topics surrounding the assessment of the liver in heart failure Presents important clinical cardiovascular assessments in cirrhotic patients

Download or read book WSAVA Standards for Clinical and Histological Diagnosis of Canine and Feline Liver Disease written by World Small Animal Veterinary Association. Liver Standardization Group and published by Elsevier Health Sciences. This book was released on 2006 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes guidelines for diagnosis of liver diseases in dogs and cats, using both histological and clinical criteria. All diseases and their variations are illustrated by images of the macroscopic and histopathological features, alongside theessential criteria which are required for diagnosis.

Download or read book The Liver written by Irwin M. Arias and published by John Wiley & Sons. This book was released on 2020-03-09 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between basic scientific advances and the understanding of liver disease — the extensively revised new edition of the premier text in the field. The latest edition of The Liver: Biology and Pathobiology remains a definitive volume in the field of hepatology, relating advances in biomedical sciences and engineering to understanding of liver structure, function, and disease pathology and treatment. Contributions from leading researchers examine the cell biology of the liver, the pathobiology of liver disease, the liver’s growth, regeneration, metabolic functions, and more. Now in its sixth edition, this classic text has been exhaustively revised to reflect new discoveries in biology and their influence on diagnosing, managing, and preventing liver disease. Seventy new chapters — including substantial original sections on liver cancer and groundbreaking advances that will have significant impact on hepatology — provide comprehensive, fully up-to-date coverage of both the current state and future direction of hepatology. Topics include liver RNA structure and function, gene editing, single-cell and single-molecule genomic analyses, the molecular biology of hepatitis, drug interactions and engineered drug design, and liver disease mechanisms and therapies. Edited by globally-recognized experts in the field, this authoritative volume: Relates molecular physiology to understanding disease pathology and treatment Links the science and pathology of the liver to practical clinical applications Features 16 new “Horizons” chapters that explore new and emerging science and technology Includes plentiful full-color illustrations and figures The Liver: Biology and Pathobiology, Sixth Edition is an indispensable resource for practicing and trainee hepatologists, gastroenterologists, hepatobiliary and liver transplant surgeons, and researchers and scientists in areas including hepatology, cell and molecular biology, virology, and drug metabolism.

Download or read book The Hepatic Circulation and Portal Hypertension written by Charles Gardner Child and published by . This book was released on 1954 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Anatomy and Physiology written by J. Gordon Betts and published by . This book was released on 2013-04-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cognitive Pearls in General Surgery written by Vijay K. Maker and published by Springer. This book was released on 2014-12-02 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is organized by organ system and the illustrations highlight surgical pearls borne of experience and polished by the study of pertinent references. Hand-drawn and illustrated figures show exact anatomical relationships as we see them in-vivo. A question/answer format augments the images to allow the reader to actively reflect on the topic and to appraise his/her knowledge in that area. The discussion sections strive to explain not only what the correct answer is, but also why the distractors are wrong, in order to motivate discussion and self-reflection. Cognitive Pearls in General Surgery details the explicit thought processes and associations that underlie the understanding of the topics at hand, with the intent of enhancing the fun and enjoyment that only an informed and well-grounded practice of surgery can provide.