Blood Demand

Author : Forum on Blood Safety and Blood Availability
Publisher : National Academies Press
ISBN 13 : 0309589622
Total Pages : 132 pages
Book Rating : 4.28/5 ( download)

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Download or read book Blood Donors and the Supply of Blood and Blood Products written by Forum on Blood Safety and Blood Availability and published by National Academies Press. This book was released on 1996-08-09 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses the current state of the nation's blood supply--including studies of blood availability, ways of enhancing blood collection and distribution, frozen red cell technology, logistical concerns in prepositioning frozen blood, extended liquid storage of red cells, and blood substitutes.

Author : World Health Organization
Publisher :
ISBN 13 : 9789241548519
Total Pages : 0 pages
Book Rating : 4.17/5 ( download)

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Download or read book Blood Donor Selection written by World Health Organization and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The WHO guidelines on assessing donor suitability for blood donation have been developed to assist blood transfusion services in countries that are establishing or strengthening national systems for the selection of blood donors. They are designed for use by policy makers in national blood programmes in ministries of health, national advisory bodies such as national blood commissions or councils, and blood transfusion services.

Author : Roland N. Pittman
Publisher : Biota Publishing
ISBN 13 : 1615047212
Total Pages : 117 pages
Book Rating : 4.15/5 ( download)

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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.

Author : Marilyn J. Cipolla
Publisher : Biota Publishing
ISBN 13 : 1615047239
Total Pages : 82 pages
Book Rating : 4.39/5 ( download)

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Download or read book The Cerebral Circulation written by Marilyn J. Cipolla and published by Biota Publishing. This book was released on 2016-07-28 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : World Health Organization
Publisher :
ISBN 13 : 9789241548557
Total Pages : 114 pages
Book Rating : 4.5X/5 ( download)

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Download or read book Blood Donor Counselling written by World Health Organization and published by . This book was released on 2016-06-24 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Individuals who donate their blood provide a unique and precious gift in an act of human solidarity. In order to donate blood, prospective donors should be in good health and free from any infections that can be transmitted through transfusion. Most blood donors perceive themselves to be healthy, but some are unsuitable to donate blood due to the potential risk of compromising or worsening their own health or the risk of transmission of infections to patients. Blood transfusion services (BTS) have a duty of care towards blood donors as well as to the recipients of transfusion. This duty of care extends to prospective donors who are deferred from donation--whether on a temporary or permanent basis--as well as those who donate blood and are subsequently found to have unusual or abnormal test results. BTS have a responsibility to confirm test results and provide information, counseling and support to enable these individuals to understand and respond to unexpected information about their health or risk status. Counseling is part of the spectrum of care that a BTS should be able to provide to blood donors--including referral to medical practitioners or specialist clinical services. Pre-donation counseling was recognized as one element of the strategy to reduce and, if possible, prevent the donation of blood by individuals who might be at risk for HIV and other TTI including hepatitis B and C viruses as well as to inform the donor of the donation process and testing of blood for HIV. Post-donation counseling was acknowledged to be a necessary element of donor management as an adjunct to informing donors of unusual or abnormal test results. Blood donor counseling by trained specialist staff is now considered to be a key component of the blood system in most countries with a well-developed blood transfusion service. It may be required at a number of stages in the blood donation process or following blood screening and should be available at any point at which the BTS has an interface with donors. In many countries, however, blood donor counseling is not yet available in a structured way. Blood Donor Counselling: Implementation Guidelines has therefore been developed to provide guidance to blood transfusion services that have not yet established donor counseling programs.

Author : Michitoshi Inoue
Publisher : Springer Science & Business Media
ISBN 13 : 4431683674
Total Pages : 330 pages
Book Rating : 4.74/5 ( download)

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Download or read book Regulation of Coronary Blood Flow written by Michitoshi Inoue and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Institute of Medicine
Publisher : National Academies Press
ISBN 13 : 0309053293
Total Pages : 349 pages
Book Rating : 4.97/5 ( download)

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Download or read book HIV and the Blood Supply written by Institute of Medicine and published by National Academies Press. This book was released on 1995-10-05 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the early years of the AIDS epidemic, thousands of Americans became infected with HIV through the nation's blood supply. Because little reliable information existed at the time AIDS first began showing up in hemophiliacs and in others who had received transfusions, experts disagreed about whether blood and blood products could transmit the disease. During this period of great uncertainty, decision-making regarding the blood supply became increasingly difficult and fraught with risk. This volume provides a balanced inquiry into the blood safety controversy, which involves private sexual practices, personal tragedy for the victims of HIV/AIDS, and public confidence in America's blood services system. The book focuses on critical decisions as information about the danger to the blood supply emerged. The committee draws conclusions about what was doneâ€"and recommends what should be done to produce better outcomes in the face of future threats to blood safety. The committee frames its analysis around four critical area: Product treatmentâ€"Could effective methods for inactivating HIV in blood have been introduced sooner? Donor screening and referralâ€"including a review of screening to exlude high-risk individuals. Regulations and recall of contaminated bloodâ€"analyzing decisions by federal agencies and the private sector. Risk communicationâ€"examining whether infections could have been averted by better communication of the risks.

Author : Nadia Dean
Publisher :
ISBN 13 : 9780983113317
Total Pages : 440 pages
Book Rating : 4.19/5 ( download)

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Download or read book A Demand of Blood written by Nadia Dean and published by . This book was released on 2012-12-22 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Demand of Blood chronicles the war fought in the shadows of the American Revolution. As southern colonists engaged in rebellion against the Crown, Dragging Canoe, the Cherokee warrior and British ally, waged guerilla warfare throughout the southern colonies. In retaliation, patriot powers sent 6,000 militiamen to destroy Cherokee towns. In 1777, Cherokees sued for peace, ceding land their young warriors had fervently fought to regain.

Author : Kieran Healy
Publisher : University of Chicago Press
ISBN 13 : 0226322386
Total Pages : 200 pages
Book Rating : 4.84/5 ( download)

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Download or read book Last Best Gifts written by Kieran Healy and published by University of Chicago Press. This book was released on 2010-08-15 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than any other altruistic gesture, blood and organ donation exemplifies the true spirit of self-sacrifice. Donors literally give of themselves for no reward so that the life of an individual—often anonymous—may be spared. But as the demand for blood and organs has grown, the value of a system that depends solely on gifts has been called into question, and the possibility has surfaced that donors might be supplemented or replaced by paid suppliers. Last Best Gifts offers a fresh perspective on this ethical dilemma by examining the social organization of blood and organ donation in Europe and the United States. Gifts of blood and organs are not given everywhere in the same way or to the same extent—contrasts that allow Kieran Healy to uncover the pivotal role that institutions play in fashioning the contexts for donations. Procurement organizations, he shows, sustain altruism by providing opportunities to give and by producing public accounts of what giving means. In the end, Healy suggests, successful systems rest on the fairness of the exchange, rather than the purity of a donor’s altruism or the size of a financial incentive.

Author : John C. Petricciani
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.77/5 ( download)

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Download or read book AIDS written by John C. Petricciani and published by John Wiley & Sons. This book was released on 1987 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a meeting held at WHO in Geneva on April 14-16, 1986.