Hypoxia And The Circulation

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Regulation of Tissue Oxygenation, Second Edition

Author : Roland N. Pittman
Publisher : Biota Publishing
ISBN 13 : 1615047212
Total Pages : 117 pages
Book Rating : 4.6/5 (15 download)

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Book Synopsis Regulation of Tissue Oxygenation, Second Edition by : Roland N. Pittman

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.

Hypoxia and the Circulation

Author : Robert Roach
Publisher : Springer Science & Business Media
ISBN 13 : 0387754342
Total Pages : 348 pages
Book Rating : 4.3/5 (877 download)

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Book Synopsis Hypoxia and the Circulation by : Robert Roach

Download or read book Hypoxia and the Circulation written by Robert Roach and published by Springer Science & Business Media. This book was released on 2008-01-08 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Just one of a series of volumes on differing aspects of hypoxia, this authoritative text focuses on cutting-edge research at the interface of hypoxia and biomedicine. Hypoxia – or lack of oxygen – is a constant threat to the human body and its vital organs, one that can take its toll in a number of situations. There are many situations in which the threat is heightened in health and disease, but mechanisms have evolved to lessen its detrimental effects. The International Hypoxia Symposia was founded to enable scientists, clinicians, physiologists, immunologists, mountaineers and other interested individuals to share their experiences of the situations associated with the lack of oxygen and the adaptations that allow us to survive.

Hypoxia, Metabolic Acidosis, and the Circulation

Author : Allen Ives Arieff
Publisher : Oxford University Press, USA
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Hypoxia, Metabolic Acidosis, and the Circulation by : Allen Ives Arieff

Download or read book Hypoxia, Metabolic Acidosis, and the Circulation written by Allen Ives Arieff and published by Oxford University Press, USA. This book was released on 1992 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been a wealth of new information on the physiological and biochemical consequences of hypoxia, or low blood levels of oxygen. This new volume discusses the implications of these new findings on the pathophysiology, development, and treatment of hypoxic metabolic acidosis. The volume is part of the Clinical Physiology series sponsored by the American Physiological Society, and is based on a FASEB symposium held in May 1988. Hypoxia was once thought to affect organs in a similar manner, but it is now known that each is affected differently. The author shows how hypoxia and metabolic acidosis affect the heart, lungs, blood vessels and other organs at the cellular level, the tissue level, and finally, at the level of the entire organ. The book then proceeds to a description of the situations in which hypoxic metabolic acidosis develops, such as during high altitude exposure, cardiac arrest, and lactic acidosis. The last few chapters give an overview of treatment. Traditional therapy has consisted largely of the intravenous administration of sodium bicarbonate. This method has come under increasing scrutiny however, and the range of problems associated with the use of sodium bicarbonate is examined fully. Newer alternative agents for managing hypoxic acidosis are reviewed as well. This up-to-date review of hypoxia and metabolic acidosis should be of interest to physiologists, internists, cardiologists, chest physicians, anesthesiologists, and intensive care specialists.

Regulation of Coronary Blood Flow

Author : Michitoshi Inoue
Publisher : Springer Science & Business Media
ISBN 13 : 4431683674
Total Pages : 330 pages
Book Rating : 4.4/5 (316 download)

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Book Synopsis Regulation of Coronary Blood Flow by : Michitoshi Inoue

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.

The Cerebral Circulation

Author : Marilyn J. Cipolla
Publisher : Biota Publishing
ISBN 13 : 1615047239
Total Pages : 82 pages
Book Rating : 4.6/5 (15 download)

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Book Synopsis The Cerebral Circulation by : Marilyn J. Cipolla

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.

Hypoxia, Metabolic Acidosis, and the Circulation

Author : Allen I. Arieff
Publisher : Springer
ISBN 13 : 1461475422
Total Pages : 221 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Hypoxia, Metabolic Acidosis, and the Circulation by : Allen I. Arieff

Download or read book Hypoxia, Metabolic Acidosis, and the Circulation written by Allen I. Arieff and published by Springer. This book was released on 2013-05-27 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been a wealth of new information on the physiological and biochemical consequences of hypoxia, or low blood levels of oxygen. This new volume discusses the implications of these new findings on the pathophysiology, development, and treatment of hypoxic metabolic acidosis. The volume is part of the Clinical Physiology series sponsored by the American Physiological Society, and is based on a FASEB symposium held in May 1988. Hypoxia was once thought to affect organs in a similar manner, but it is now known that each is affected differently. The author shows how hypoxia and metabolic acidosis affect the heart, lungs, blood vessels and other organs at the cellular level, the tissue level, and finally, at the level of the entire organ. The book then proceeds to a description of the situations in which hypoxic metabolic acidosis develops, such as during high altitude exposure, cardiac arrest, and lactic acidosis. The last few chapters give an overview of treatment. Traditional therapy has consisted largely of the intravenous administration of sodium bicarbonate. This method has come under increasing scrutiny however, and the range of problems associated with the use of sodium bicarbonate is examined fully. Newer alternative agents for managing hypoxic acidosis are reviewed as well. This up-to-date review of hypoxia and metabolic acidosis should be of interest to physiologists, internists, cardiologists, chest physicians, anesthesiologists, and intensive care specialists.

Skeletal Muscle Circulation

Author : Ronald J. Korthuis
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1615041834
Total Pages : 147 pages
Book Rating : 4.6/5 (15 download)

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Book Synopsis Skeletal Muscle Circulation by : Ronald J. Korthuis

Download or read book Skeletal Muscle Circulation written by Ronald J. Korthuis and published by Morgan & Claypool Publishers. This book was released on 2011 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this treatise is to summarize the current understanding of the mechanisms for blood flow control to skeletal muscle under resting conditions, how perfusion is elevated (exercise hyperemia) to meet the increased demand for oxygen and other substrates during exercise, mechanisms underlying the beneficial effects of regular physical activity on cardiovascular health, the regulation of transcapillary fluid filtration and protein flux across the microvascular exchange vessels, and the role of changes in the skeletal muscle circulation in pathologic states. Skeletal muscle is unique among organs in that its blood flow can change over a remarkably large range. Compared to blood flow at rest, muscle blood flow can increase by more than 20-fold on average during intense exercise, while perfusion of certain individual white muscles or portions of those muscles can increase by as much as 80-fold. This is compared to maximal increases of 4- to 6-fold in the coronary circulation during exercise. These increases in muscle perfusion are required to meet the enormous demands for oxygen and nutrients by the active muscles. Because of its large mass and the fact that skeletal muscles receive 25% of the cardiac output at rest, sympathetically mediated vasoconstriction in vessels supplying this tissue allows central hemodynamic variables (e.g., blood pressure) to be spared during stresses such as hypovolemic shock. Sympathetic vasoconstriction in skeletal muscle in such pathologic conditions also effectively shunts blood flow away from muscles to tissues that are more sensitive to reductions in their blood supply that might otherwise occur. Again, because of its large mass and percentage of cardiac output directed to skeletal muscle, alterations in blood vessel structure and function with chronic disease (e.g., hypertension) contribute significantly to the pathology of such disorders. Alterations in skeletal muscle vascular resistance and/or in the exchange properties of this vascular bed also modify transcapillary fluid filtration and solute movement across the microvascular barrier to influence muscle function and contribute to disease pathology. Finally, it is clear that exercise training induces an adaptive transformation to a protected phenotype in the vasculature supplying skeletal muscle and other tissues to promote overall cardiovascular health. Table of Contents: Introduction / Anatomy of Skeletal Muscle and Its Vascular Supply / Regulation of Vascular Tone in Skeletal Muscle / Exercise Hyperemia and Regulation of Tissue Oxygenation During Muscular Activity / Microvascular Fluid and Solute Exchange in Skeletal Muscle / Skeletal Muscle Circulation in Aging and Disease States: Protective Effects of Exercise / References

Hypoxia and the Circulation

Author : Robert Roach
Publisher : Springer
ISBN 13 : 9780387521329
Total Pages : 0 pages
Book Rating : 4.5/5 (213 download)

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Book Synopsis Hypoxia and the Circulation by : Robert Roach

Download or read book Hypoxia and the Circulation written by Robert Roach and published by Springer. This book was released on 2008-11-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Just one of a series of volumes on differing aspects of hypoxia, this authoritative text focuses on cutting-edge research at the interface of hypoxia and biomedicine. Hypoxia – or lack of oxygen – is a constant threat to the human body and its vital organs, one that can take its toll in a number of situations. There are many situations in which the threat is heightened in health and disease, but mechanisms have evolved to lessen its detrimental effects. The International Hypoxia Symposia was founded to enable scientists, clinicians, physiologists, immunologists, mountaineers and other interested individuals to share their experiences of the situations associated with the lack of oxygen and the adaptations that allow us to survive.

Oxygen Transfer from Atmosphere to Tissues

Author : Noberto C. Gonzalez
Publisher : Springer
ISBN 13 : 9781468454833
Total Pages : 374 pages
Book Rating : 4.4/5 (548 download)

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Book Synopsis Oxygen Transfer from Atmosphere to Tissues by : Noberto C. Gonzalez

Download or read book Oxygen Transfer from Atmosphere to Tissues written by Noberto C. Gonzalez and published by Springer. This book was released on 2012-03-22 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cardiac Output and Regional Blood Flow in Conscious Rats Exposed to Acute Hypoxia

Author : N. S. Nejad
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Cardiac Output and Regional Blood Flow in Conscious Rats Exposed to Acute Hypoxia by : N. S. Nejad

Download or read book Cardiac Output and Regional Blood Flow in Conscious Rats Exposed to Acute Hypoxia written by N. S. Nejad and published by . This book was released on 1967 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of hypoxia on cardiac output and fractional distribution of regional blood flow were measured in unrestrained and unanesthetized Sprague-Dawley rats. Cardiac output was determined by thermodilution techniques, while blood distribution was determined by Rb86Cl and iodoantipyrine131 tracers. The animals were exposed 18-24 hours after cannulation to atmospheres of air and 7 and 10% oxygen in nitrogen. Cardiac output was higher in the hypoxic environments. Fractional distribution to brain, heart, and adrenal was increased, while that to the kidney and spleen was decreased in reduced O2 environments. (Author).

Hypoxia

Author : Robert C. Roach
Publisher : Springer Science & Business Media
ISBN 13 : 1441989978
Total Pages : 367 pages
Book Rating : 4.4/5 (419 download)

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Book Synopsis Hypoxia by : Robert C. Roach

Download or read book Hypoxia written by Robert C. Roach and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Hypoxia Symposium convenes biannually to bring together international experts from many fields to explore the state of the art in normal and pathophysiological responses to hypoxia. Representatives from five continents and 32 countries joined together in February 2003 for four days in the dramatic mountains of Banff, Alberta. As editors of the Proceedings of the International Hypoxia Symposia, we strive to maintain a 26 six year tradition of presenting a stimulating blend of clinical and basic science papers focused on hypoxia. Topics covered in 2003 include hibernation and hypoxia, hypoxia and fetal development and new advances in high altitude pathophysiology, oxidative stress and membrane damage, hypoxic regulation of blood flow, heat shock proteins in hypoxia, and future directions in hypoxia research. In 2003 we also had the privilege ofhonoring John W. Severinghaus as a friend, colleague, mentor and inspiration to many in the field. Tom Hornbein's personal tribute to John Severinghaus is the first chapter in this volume, followed by an entertaining update of the history of the discovery of oxygen written by John Severinghaus.

Hypoxia

Author : Robert C. Roach
Publisher : Springer Science & Business Media
ISBN 13 : 9780306466960
Total Pages : 466 pages
Book Rating : 4.4/5 (669 download)

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Book Synopsis Hypoxia by : Robert C. Roach

Download or read book Hypoxia written by Robert C. Roach and published by Springer Science & Business Media. This book was released on 2002-01-31 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypoxia remains a constant threat throughout life. It is for this reason that the International Hypoxia Society strives to maintain a near quarter century tradition of presenting a stimulating blend of clinical and basic science discussions. International experts from many fields have focused on the state-of-the-art discoveries in normal and pathophysiological responses to hypoxia. Topics in this volume include gene-environment interactions, a theme developed in both a clinical context regarding exercise and hypoxia, as well as in native populations living in high altitudes. Furthermore, experts in the field have combined topics such as skeletal muscle angiogenesis and hypoxia, high altitude pulmonary edema, new insights into the biology of the erythropoietin receptor, and the latest advances in cardiorespiratory control in hypoxia. This volume explores the fields of anatomy, cardiology, biological transport, and biomedical engineering among many others.

Hypoxic Respiratory Failure in the Newborn

Author : Shyamala Dakshinamurti
Publisher : CRC Press
ISBN 13 : 1000442322
Total Pages : 268 pages
Book Rating : 4.0/5 (4 download)

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Book Synopsis Hypoxic Respiratory Failure in the Newborn by : Shyamala Dakshinamurti

Download or read book Hypoxic Respiratory Failure in the Newborn written by Shyamala Dakshinamurti and published by CRC Press. This book was released on 2021-10-29 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have all been hypoxic. Fetal tolerance for intrauterine hypoxia arises from evolutionarily conserved physiological mechanisms, the antecedents of which can be learned from diving mammals or species at high altitudes. Understanding fetal hypoxia leads to understanding the huge physiological shifts of neonatal transition and the dangers of perinatal hypoxia. This comprehensive volume of topical review articles by expert authors addresses the origins of hypoxia tolerance, the impact of oxygen on circulatory transition at birth, and the biochemistry of hypoxia in the pulmonary circuit, as well as the classification, diagnosis, and clinical management of hypoxic respiratory failure and persistent pulmonary hypertension in the term neonate. The goal of Hypoxic Respiratory Failure in the Newborn is to connect our understanding of hypoxia from animals in extreme environments, with how the human fetus handles its hypoxic environment; and why the human newborn suddenly cannot. The book will educate health care professionals on how to care for newborns with hypoxic respiratory failure, including the use of up-to-date diagnostic tools and therapies. It also highlights areas of controversy and ongoing research in hypoxic respiratory failure and pulmonary hypertension of the newborn, including challenging case studies. Key Features Explores evolutionary context and comparative physiology of hypoxia tolerance in the fetus and neonate, from basic research to clinical scenarios Provides guidance to trainees, physicians, and allied health professionals engaged in NICU care; pediatricians, cardiologists, pulmonologists, anesthesiologists, neonatologists, and physiologists to effectively manage infants in hypoxic respiratory failure Includes case scenarios emphasizing current diagnostic and therapeutic controversies and algorithmic approaches to decipher difficult clinical cases

Clinical Aspects of O2 Transport and Tissue Oxygenation

Author : K. Reinhart
Publisher : Springer
ISBN 13 :
Total Pages : 532 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Clinical Aspects of O2 Transport and Tissue Oxygenation by : K. Reinhart

Download or read book Clinical Aspects of O2 Transport and Tissue Oxygenation written by K. Reinhart and published by Springer. This book was released on 1989-10-27 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: All aspects of oxygen transport and tissue oxygenation that are relevant in clinical medicine are covered in this monograph. Experts from basic science as well as clinical research provide information that improves understanding of how to treat O2-transport disturbances in daily practice. Special interest is focussed on the question of supply dependency of O2-uptake and its role in multi-organ failure in the critically ill. Other topics are the clinical monitoring of O2-transport and O2-utilisation, oxygen toxicity, and the role of O2-radicals and the reperfusion syndrome in organ transplantation and cardiopulmonary resuscitation.

Physiologic and Pathologic Angiogenesis

Author : Dan Simionescu
Publisher : BoD – Books on Demand
ISBN 13 : 9535130234
Total Pages : 466 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Physiologic and Pathologic Angiogenesis by : Dan Simionescu

Download or read book Physiologic and Pathologic Angiogenesis written by Dan Simionescu and published by BoD – Books on Demand. This book was released on 2017-04-05 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to highlight novel advances in the field and to incentivize scientists from a variety of fields to pursue angiogenesis as a research avenue. Blood vessel formation and maturation to capillaries, arteries, or veins is a fascinating area which can appeal to multiple scientists, students, and professors alike. Angiogenesis is relevant to medicine, engineering, pharmacology, and pathology and to the many patients suffering from blood vessel diseases and cancer, among others. We are hoping that this book will become a source of inspiration and novel ideas for all.

Hypoxia and Human Diseases

Author : Jing Zheng
Publisher : BoD – Books on Demand
ISBN 13 : 9535128957
Total Pages : 456 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Hypoxia and Human Diseases by : Jing Zheng

Download or read book Hypoxia and Human Diseases written by Jing Zheng and published by BoD – Books on Demand. This book was released on 2017-02-01 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a total of 21 chapters, each of which was written by experts in the corresponding field. The objective of this book is to provide a comprehensive and updated overview of cellular and molecular mechanisms underlying hypoxia's impacts on human health, as well as current advances and future directions in the detection, recognition, and management of hypoxia-related disorders. This collection of articles provides a clear update in the area of hypoxia research for biomedical researchers, medical students, nurse practitioners, and practicing clinicians in the fields of high altitude biology, cardiovascular biology and medicine, tumor oncology, obstetrics, pediatrics, and orthodontics and for others who may be interested in hypoxia.

Hypoxia

Author : Robert C. Roach
Publisher : Springer Science & Business Media
ISBN 13 : 1461547113
Total Pages : 455 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Hypoxia by : Robert C. Roach

Download or read book Hypoxia written by Robert C. Roach and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypoxia is a constant threat throughout life. International experts from many different fields, including clinicians, clinical researchers, and basic scientists, have contributed to this volume, presenting state-of-the-art information regarding normal and abnormal (pathophysiological) responses to hypoxia. The topics covered include visitors to high altitude, the latest developments on high-altitude cerebral and pulmonary edema, the brain in hypoxia, high-altitude headache, and similarities between ischemic and hypoxic injury to the brain. In addition topics are covered such as blood-brain barrier in hypoxia, hypoxia interactions with vascular growth, and how humans adjust to extreme hypoxia.