Author: J. Gordon Betts
Publisher:
ISBN: 9781947172807
Category :
Languages : en
Pages : 0

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Author: J. A. Barrowman
Publisher: CUP Archive
ISBN: 9780521217101
Category : Medical
Languages : en
Pages : 370

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Author: Peter R. Kvietys
Publisher: Morgan & Claypool Publishers
ISBN: 1615041176
Category : Medical
Languages : en
Pages : 127

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Book Description
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

Author: Lindsay Biga
Publisher:
ISBN: 9781955101158
Category :
Languages : en
Pages :

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A version of the OpenStax text

Author: C. S. Pitchumoni
Publisher: Springer Science & Business Media
ISBN: 1441916237
Category : Medical
Languages : en
Pages : 660

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Book Description
As aging trends in the United States and Europe in particular are strongly suggestive of increasingly older society, it would be prudent for health care providers to better prepare for such changes. By including physiology, disease, nutrition, pharmacology, pathology, radiology and other relevant associated topics, Geriatric Gastroenterology fills the void in the literature for a volume devoted specifically to gastrointestinal illness in the elderly. This unique volume includes provision of training for current and future generations of physicians to deal with the health problems of older adults. It will also serve as a comprehensive guide to practicing physicians for ease of reference. Relevant to the geriatric age group, the volume covers epidemiology, physiology of aging, gastrointestinal physiology, pharmacology, radiology, pathology, motility disorders, luminal disorders, hepato-biliary disease, systemic manifestations, neoplastic disorders, gastrointestinal bleeding, cancer and medication related interactions and adverse events, all extremely common in older adults; these are often hard to evaluate and judge, especially considering the complex aging physiology. All have become important components of modern medicine. Special emphasis is be given to nutrition and related disorders. Capsule endoscopy and its utility in the geriatric population is also covered. Presented in simple, easy to read style, the volume includes numerous tables, figures and key points enabling ease of understanding. Chapters on imaging and pathology are profusely illustrated. All chapters are written by specialists and include up to date scientific information. Geriatric Gastroenterology is of great utility to residents in internal medicine, fellows in gastroenterology and geriatric medicine as well as gastroenterologists, geriatricians and practicing physicians including primary care physicians caring for older adults.

Author: Vincenza Cifarelli
Publisher: Frontiers Media SA
ISBN: 2889666913
Category : Science
Languages : en
Pages : 180

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Book Description

Author: Colin Pinnock
Publisher: Cambridge University Press
ISBN: 9780521690799
Category : Medical
Languages : en
Pages : 990

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Book Description
The second edition of Fundamentals of Anaesthesia builds upon the success of the first edition, and encapsulates the modern practice of anaesthesia in a single volume. Written and edited by a team of expert contributors, it provides a comprehensive but easily readable account of all of the information required by the FRCA Primary examination candidate and has been expanded to include more detail on all topics and to include new topics now covered in the examination. As with the previous edition, presentation of information is clear and concise, with the use of lists, tables, summary boxes and line illustrations where necessary to highlight important information and aid the understanding of complex topics. Great care has been taken to ensure an unrivalled consistency of style and presentation throughout.

Author: Christine Norton
Publisher: Oxford University Press, USA
ISBN: 0199298653
Category : Medical
Languages : en
Pages : 762

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Book Description
"This practical guide to all aspects of gastrointestinal nursing covers the treatment of a wide range of patients - from those suffering from minor and acute disorders, through chronic conditions, to those requiring major surgery and treatment for malignant disease. It summarizes the current state of knowledge in gastrointestinal nursing and provides concise, user-friendly guidelines on the management and treatment of patients with gastrointestinal disorders." "Written by practising nurses and subject experts, and incorporating their years of experience, the Oxford Handbook of Gastrointestinal Nursing is a unique and invaluable companion for practising nurses, and for all health care professionals who are involved in the care of patients with gastrointestinal disorders."--BOOK JACKET.

Author: Cris S. Constantinescu
Publisher: Springer
ISBN: 3319286099
Category : Medical
Languages : en
Pages : 345

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Book Description
This book addresses important issues regarding the interaction between the nervous system, the immune system, and the digestive system. Gut flora has a profound influence on the shaping of the immune response, not only in the gastrointestinal system but also in the nervous system. Fascinatingly, manipulation of intestinal immune responses can be used to modulate neurological disease. Conversely, the nervous system and the psyche have significant effects on the functioning of the gut and liver. After introductory chapters on the neurology, the immunology and microbiology of the gut, the effects of the gut immune system and gut flora and its manipulation on neurological disease are discussed, followed by molecular mimicry and immune tolerance in neuroimmune diseases. Additionally, several chapters deal with gastrointestinal manifestations of neurological diseases. Neuro-Immuno-Gastroenterology is aimed at neurologists, gastroenterologists, and immunologists.

Author: Andreas Sturm
Publisher: Springer
ISBN: 3319750224
Category : Medical
Languages : en
Pages : 481

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Book Description
This comprehensive manual discusses the many aspects of inflammatory bowel disease (IBD), providing relevant information along with practical guidance. The reader is also directed to additional resources for extra and current information. This book comes at a time when the number of people suffering from the two major forms of IBD, ulcerative colitis (UC) and Crohn’s disease (CD), is rising around the globe. Despite their huge impact on daily life and health economics, these diseases are not fully understood, and diagnosis and treatment remains a significant challenge. IBD nurses are increasingly recognised as key clinicians within the multidisciplinary team caring for people with IBD. Through experience and specialist knowledge IBD nurses provide timely support, advice, and treatment for people living with this unpredictable condition. IBD nurses are also well placed to liaise with the wider team, developing patient centred services which best fit their local health framework. The combined international expertise and accessible guidance here will equip nurses, or any clinician wanting to increase their competence in IBD management. Thereby this manual aims to contribute to the optimisation of IBD care throughout the world.