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.

A unified, up-to-date account of circular data-handling techniques, useful throughout science.

Highly Commended - 2010 BMA Medical Book Awards An essential, practical manual for all those working in transfusion medicine Concise and user-friendly guide to transfusion medicine Focuses on clinical aspects but also covers background science and organizational issues Complications encountered in transfusion are addressed throughout Highlights controversial issues and provides advice for everyday clinical questions in transfusion medicine This comprehensive guide to transfusion medicine takes a practical and didactic approach. The third edition of this text includes many new contributions and has expanded to seven sections. The first of these takes the reader systematically through the principles of transfusion medicine. The second deals with the complications which can arise in transfusion and is followed by a section on the practice of transfusion in blood centres and hospitals. The fourth section covers clinical transfusion practice and the fifth looks at alternatives to transfusion. Section six addresses cellular and tissue therapy and organ transplantation and the final section of the book examines the development of the evidence base for transfusion. As with previous editions; the final section includes a visionary chapter on future advances in the field. This new edition of Practical Transfusion Medicine benefits from even more international authorship than the previous two editions and is an invaluable resource for trainee doctors, scientists, technicians and other staff in haematology and transfusion and as a reference book for clinical staff in haematology and other disciplines faced with specific problems.