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| Author | : Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure |
| Publisher | : |
| Total Pages | : 20 |
| Release | : |
| Genre | : Hypertension |
| ISBN | : |
| 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.
| 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 | : Michitoshi Inoue |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 330 |
| Release | : 2013-11-09 |
| Genre | : Medical |
| ISBN | : 4431683674 |
Research centering on blood flow in the heart continues to hold an important position, especially since a better understanding of the subject may help reduce the incidence of coronary arterial disease and heart attacks. This book summarizes recent advances in the field; it is the product of fruitful cooperation among international scientists who met in Japan in May, 1990 to discuss the regulation of coronary blood flow.
| Author | : J. Gordon Betts |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2013-04-25 |
| Genre | : |
| ISBN | : 9781947172807 |
| Author | : D. Gareth Beevers |
| Publisher | : John Wiley & Sons |
| Total Pages | : 89 |
| Release | : 2010-07-15 |
| Genre | : Medical |
| ISBN | : 1405171359 |
Hypertension is a condition which affects millions of peopleworldwide and its treatment greatly reduces the risk of strokes andheart attacks. This fully revised and updated edition of the ABCof Hypertension is an established guide providing all thenon-specialist needs to know about the measurement of bloodpressure and the investigation and management of hypertensivepatients. This new edition provides comprehensively updated andrevised information on how and whom to treat. The ABC of Hypertension will prove invaluable to generalpractitioners who may be screening large numbers of patients forhypertension, as well as nurse practitioners, midwives and otherhealthcare professionals.
| Author | : Janet Bond Brill, PhD, RD, LDN |
| Publisher | : Harmony |
| Total Pages | : 354 |
| Release | : 2013-05-07 |
| Genre | : Health & Fitness |
| ISBN | : 0307986365 |
For the nearly 78 million Americans with hypertension, a safe, effective lifestyle plan—incorporating the DASH diet principles and much more—for lowering blood pressure naturally If you have high blood pressure, you're not alone: nearly a third of adult Americans have been diagnosed with hypertension, and another quarter are well on their way. Yet a whopping 56 percent of diagnosed patients do not have it under control. The good news? Hypertension is easily treatable (and preventable), and you can take action today to bring your blood pressure down in just four weeks—without the potential dangers and side effects of prescription medications. In Blood Pressure Down, Janet Bond Brill distills what she's learned over decades of helping her patients lower their blood pressure into a ten-step lifestyle plan that's manageable for anyone. You'll: • harness the power of blood pressure power foods like bananas, spinach, and yogurt • start a simple regimen of exercise and stress reduction • stay on track with checklists, meal plans, and more than fifty simple recipes Easy, effective, safe—and delicious—Blood Pressure Down is the encouraging resource that empowers you, or your loved ones, to lower your blood pressure and live a longer, heart-healthy life.
| Author | : Rob Krams |
| Publisher | : Oxford University Press |
| Total Pages | : 347 |
| Release | : 2017 |
| Genre | : Medical |
| ISBN | : 0198755775 |
The ESC Textbook of Vascular Biology is a rich and clearly laid-out guide by leading European scientists providing comprehensive information on vascular physiology, disease, and research.
| 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.
| Author | : U. S. Department Human Services |
| Publisher | : Createspace Independent Publishing Platform |
| Total Pages | : 62 |
| Release | : 2012-07-09 |
| Genre | : |
| ISBN | : 9781478215295 |
This book by the National Institutes of Health (Publication 06-4082) and the National Heart, Lung, and Blood Institute provides information and effective ways to work with your diet because what you choose to eat affects your chances of developing high blood pressure, or hypertension (the medical term). Recent studies show that blood pressure can be lowered by following the Dietary Approaches to Stop Hypertension (DASH) eating plan-and by eating less salt, also called sodium. While each step alone lowers blood pressure, the combination of the eating plan and a reduced sodium intake gives the biggest benefit and may help prevent the development of high blood pressure. This book, based on the DASH research findings, tells how to follow the DASH eating plan and reduce the amount of sodium you consume. It offers tips on how to start and stay on the eating plan, as well as a week of menus and some recipes. The menus and recipes are given for two levels of daily sodium consumption-2,300 and 1,500 milligrams per day. Twenty-three hundred milligrams is the highest level considered acceptable by the National High Blood Pressure Education Program. It is also the highest amount recommended for healthy Americans by the 2005 "U.S. Dietary Guidelines for Americans." The 1,500 milligram level can lower blood pressure further and more recently is the amount recommended by the Institute of Medicine as an adequate intake level and one that most people should try to achieve. The lower your salt intake is, the lower your blood pressure. Studies have found that the DASH menus containing 2,300 milligrams of sodium can lower blood pressure and that an even lower level of sodium, 1,500 milligrams, can further reduce blood pressure. All the menus are lower in sodium than what adults in the United States currently eat-about 4,200 milligrams per day in men and 3,300 milligrams per day in women. Those with high blood pressure and prehypertension may benefit especially from following the DASH eating plan and reducing their sodium intake.
