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Subatmospheric Decompression Sickness In Man
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Book Synopsis Subatmospheric Decompression Sickness in Man by : D. I. Fryer
Download or read book Subatmospheric Decompression Sickness in Man written by D. I. Fryer and published by . This book was released on 1969 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ascent to altitude or exposure to artificially reduced atmospheric pressure may lead to the development in man of a wide range of symptoms and signs. Rarely these have been followed by the occurrence of shock, occasionally fatal. The clinical and pathological aspects of the altitude form of decompression sickness are here described and discussed, and an attempt is made to elucidate those factors influencing susceptibility. Possible mechanisms are discussed, the relevant literature reviewed and original experiments are cited. Cases seen by the author are described in detail where they contribute to the tasks of characterization of the illness, the investigation of cases, the differentiation from other conditions and the assessment of possible sequelae. Theoretical and practical aspects of prevention and treatment are described. (Author).
Book Synopsis Subatmospheric Decompression Sickness in Man by : D. I. Fryer
Download or read book Subatmospheric Decompression Sickness in Man written by D. I. Fryer and published by . This book was released on 1969 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Relationship of Scuba Diving to the Development of Aviators' Decompression Sickness by : Donald E. Furry
Download or read book The Relationship of Scuba Diving to the Development of Aviators' Decompression Sickness written by Donald E. Furry and published by . This book was released on 1966 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The additional decrease in ambient pressure which occurs when a compressed air diver flies in an aircraft within a short time after diving may be sufficient to precipitate decompression sickness, even though the dive itself was in accordance with the U.S. Navy decompression tables. The current practice by both military and civilian divers of using air transportation after compressed air diving suggests the need for specific instructions regarding the decompression required before flying after diving. In order to quantitate the importance of this problem, an experiment was designed in which large dogs were exposed to compressed air for 7 hours at their 'no-bends' pressure threshold as determined after the method of Reeves and Beckman. After pressurization, the animals were decompressed within 2-3 minutes to sea level. A sea level decompression interval of 1, 3, 6, or 12 hours was given prior to further decompression to a simulated altitude of 10,000 feet. The incidence of decompression sickness at altitude was 92.9% for the 1 hour surface decompression interval, 30% for the 3 hour interval, 27.8% for the 6 hour interval and 0% for the 12 hour interval. From these large animal studies it may be postulated that a surface decompression interval of at least 12 hours should be allowed before flying after compressed air diving of a depth and duration to require the use of diving tables.
Author :National Research Council (U.S.). Subcommittee on Decompression Sickness Publisher : ISBN 13 : Total Pages :460 pages Book Rating :4.:/5 (37 download)
Book Synopsis Decompression Sickness; Caisson Sickness, Diver's and Flier's Bends and Related Syndromes by : National Research Council (U.S.). Subcommittee on Decompression Sickness
Download or read book Decompression Sickness; Caisson Sickness, Diver's and Flier's Bends and Related Syndromes written by National Research Council (U.S.). Subcommittee on Decompression Sickness and published by . This book was released on 1951 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Academy of Sciences (U.S.). National Research Council. Division of Medical Sciences. Committee on Aviation Medicine. Subcommittee on Decompression Sickness Publisher : ISBN 13 : Total Pages : pages Book Rating :4.:/5 (54 download)
Book Synopsis Decompression Sickness. Caisson Sickness, Diver's and Flier's Bends and Related Syndromes. Compiled Under the Auspices of the Subcommittee on Decompression Sickness, Etc. [Edited by John F. Fulton.]. by : National Academy of Sciences (U.S.). National Research Council. Division of Medical Sciences. Committee on Aviation Medicine. Subcommittee on Decompression Sickness
Download or read book Decompression Sickness. Caisson Sickness, Diver's and Flier's Bends and Related Syndromes. Compiled Under the Auspices of the Subcommittee on Decompression Sickness, Etc. [Edited by John F. Fulton.]. written by National Academy of Sciences (U.S.). National Research Council. Division of Medical Sciences. Committee on Aviation Medicine. Subcommittee on Decompression Sickness and published by . This book was released on 1951 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Decompression-decompression Sickness by : Albert Alois Bühlmann
Download or read book Decompression-decompression Sickness written by Albert Alois Bühlmann and published by Springer. This book was released on 1984 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Laboratory of Hyperbaric Physiology of the Medical Clinic of the University of Zurich came into existence in 1960 thanks to private initiative and a readiness to undertake risks; the success ful start was made possible with help from the French Navy and the United States Navy. A prerequisite for the development of the laboratory was also the benevolence of the authorities of the University of Zurich toward a research project from which scarcely any practical use could be expected for the land-locked country of Switzerland. The development of the laboratory and the systematic research were supported generously from 1964 by Shell Intemationale Petroleum Maatschappij of The Hague. The basic theme of the research was always the well-being and functional ability of the human being in an atmosphere of abnor mal pressure and or abnormal composition. Many connections became obvious with respiratory physiolo gy, circulatory physiology, and physiology at great heigts, and close contact with other special laboratories of the Medical Clin ic proved very valuable. With a relatively small number of steady collaborators it was possible to master an extensive experimental program. Special thanks are due to Mr. Benno Schenk, who as technical head was responsible for the exact performance of all the hyperbaric experiments.
Download or read book Beating the Bends written by Alex Brylske and published by . This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Decompression Sickness and Nitrogen Elimination in Man by : Ulf Balldin
Download or read book Decompression Sickness and Nitrogen Elimination in Man written by Ulf Balldin and published by . This book was released on 1973 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Exercise During Decompression from Increased Barometric Pressures on the Incidence of Decompression Sickness in Man by :
Download or read book The Effect of Exercise During Decompression from Increased Barometric Pressures on the Incidence of Decompression Sickness in Man written by and published by . This book was released on 1949 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty-seven divers in excellent physical condition were used as subjects for the studies. A total of 201 dives were made, 60 being of the saturation type (depths of 33 to 40 feet for 12 hours exposure) and 141 of them being of the short deep variety. Results: the adverse effect of exercise is similar after saturation dives or the deep dives. For the saturation dives the incidence of pain among 14 subjects who rested was 35.7T as compared to 71.4% when the same subjects exercised. For all deep dives, the incidence of pain was 16.36% among 55 subjects who rested as compared to 49.09% when the same subjects exercised. A summary of all singular dives, although not as significant for true comparison, reveals a similar increase of pain symptoms when exercise was performed. Recommendations: the performance of exercise by divers during their decompression period or immediately after reaching surface pressure is not recommended and its employment in current diving practice should be discontinued
Book Synopsis Evidence-based Approach to the Analysis of Serious Decompression Sickness with Application to EVA Astronauts by : Johnny Conkin
Download or read book Evidence-based Approach to the Analysis of Serious Decompression Sickness with Application to EVA Astronauts written by Johnny Conkin and published by . This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is important to understand the risk of serious hypobaric decompression sickness (DCS) to develop procedures and treatment responses to mitigate the risk. Since it is not ethical to conduct prospective tests about serious DCS with humans, the necessary information was gathered from 73 published reports. We hypothesize that a 4-hr 100% oxygen (O2) prebreathe results in a very low risk of serious DCS, and test this through analysis. We evaluated 258 tests containing information from 79,366 exposures in altitude chambers. Serious DCS was documented in 918 men during the tests. A risk function analysis with maximum likelihood optimization was performed to identify significant explanatory variables, and to create a predictive model for the probability of serious DCS [P(serious DCS)]. Useful variables were Tissue Ratio, the planned time spent at altitude (Talt), and whether or not repetitive exercise was performed at altitude. Tissue Ratio is P1N2/P2, where P1N2 is calculated (N2) pressure in a compartment with a 180-min half-time for N2 pressure just before ascent, and P2 is ambient pressure after ascent. A prebreathe and decompression profile Shuttle astronauts use for extravehicular activity (EVA) includes a 4-hr prebreathe with 100% O2, an ascent to P2=4.3 lb per sq. in. absolute, and a Talt=6 hr. The P(serious DCS) is: 0.0014 (0.00096-0.00196, 95% confidence interval) with exercise and 0.00025 (0.00016-0.00035) without exercise. Given 100 Shuttle EVAs to date and no report of serious DCS, the true risk is less than 0.03 with 95% confidence (Binomial Theorem). It is problematic to estimate the risk of serious DCS since it appears infrequently, even if the estimate is based on thousands of altitude chamber exposures. The true risk to astronauts may lie between the extremes of the confidence intervals since the contribution of other factors, particularly exercise, to the risk of serious DCS during EVA is unknown. A simple model that only accounts for four important variables in retrospective data is still helpful to increase our understanding about the risk of serious DCS.
Author :National Research Council (U.S.). Committee on Aviation Medicine. Subcommittee on Decompression Sickness Publisher : ISBN 13 : Total Pages :437 pages Book Rating :4.:/5 (51 download)
Book Synopsis Decompression Sickness by : National Research Council (U.S.). Committee on Aviation Medicine. Subcommittee on Decompression Sickness
Download or read book Decompression Sickness written by National Research Council (U.S.). Committee on Aviation Medicine. Subcommittee on Decompression Sickness and published by . This book was released on 1951 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Thermal Exposure on Diver Susceptibility to Decompression Sickness by :
Download or read book The Influence of Thermal Exposure on Diver Susceptibility to Decompression Sickness written by and published by . This book was released on 2007 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The incidences of decompression sickness (DCS) were compared in divers who completed air decompression dives while fully immersed in water at temperature controlled independently [either warm (36.1 C, 97 OF) or cold (26.7 C, 80 OF)] during bottom time (BT) and decompression phases. Divers wore only loosely fitting swim trunks, t-shirts, and neoprene boots and dive gloves, performed cycle ergometer exercise while at bottom, rested during decompression, and remained under controlled resting conditions at 78 +/- 5F (25.6 +/-2.8 C) during the immediate 4 hr postdive period when they were monitored for central venous gas emboli (VGE) with 2-D cardiac echo imaging. Four hundred man-dives were completed with 21 diagnosed cases of DCS in seven series of dives to 120 feet of seawater (fsw) with different combinations of thermal conditions and BT from 25 to 70 min, but with the same U.S. Navy Standard Air 120 fsw/70 min (depth/BT) decompression schedule (stops: 30 fsw/9 min, 20 fsw/23 min, 10 fsw/55 min). Observed effects of water temperature on DCS risk during BT (T(sub W, B)), water temperature during decompression (T(sub W.D)), and different BT were isolated with a fitted logistic model. The DCS odds ratio for a 10C increase in T(sub W, B) B was 23.8(95% CI = 3.8-131.5), while the odds ratio for a 10C increase in T(sub W, B) D was 0.01 (95% CI = 0.002-0.114). In another series of 84 man-dives to 150 fsw and BT = 60 min, divers were cold during compression and bottom phases and warm during subsequent decompression on a U.S. Navy Standard Air 150 fsw/60 min schedule (stops: 40 fsw/3 min, 30 fsw/19 min, 20 fsw/26 min, 10 fsw/62 min). With only a single case of DCS, the DCS incidence in this series was significantly lower (P
Book Synopsis A New Beginning in Sight by : Eric J Arnott
Download or read book A New Beginning in Sight written by Eric J Arnott and published by CRC Press. This book was released on 2006-11-20 with total page 889 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consultant eye surgeon, Eric Arnott, was one of the original pioneers of small-incision surgery. He was the first to perform modern Phaco surgery in Europe and designed lens implants that have restored the sight to millions of patients. The word autobiography is simply insufficient to describe this book, which is a remarkable testament to the life, works and marriage of a remarkable man. The book details the original invention of the lens implant by Harold Ridley, who Eric worked with in his early years of medical training. It goes on to follow the development of small-incision Phaco surgery, instigated by Charlie Kelman, and the disinterest and contempt held by the peers of these ophthalmologic pioneers. The author describes every advance in this field of ophthalmology in fascinating detail. The importance to Eric of religion, spirituality, family life and helping others less fortunate than himself is reinforced in this enthralling and at times very amusing read. Arnott draws you into his narrative, rousing thoughts of disbelief as you are compelled to continue reading, each new chapter and event in his life proving as fascinating as the last. Entertaining and illuminating, A New Beginning in Sight provides a detailed history of ophthalmology and is essential reading for ophthalmologists, other specialists and non-specialists alike.
Book Synopsis Bennett and Elliott's Physiology and Medicine of Diving by : Alf O. Brubakk
Download or read book Bennett and Elliott's Physiology and Medicine of Diving written by Alf O. Brubakk and published by Saunders Limited.. This book was released on 2003 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thoroughly updated edition, considered the 'bible' in this field since 1969, offers in-depth coverage of the physiological basis of safe diving and the pathogenesis of diving illnesses; the clinical diagnosis and management of diving disorders; and current equipment design and its practical clinical applications. Also covered is a current understanding of central nervous system pathology, contemporary decompression theories, and state-of-the-art treatment protocols for decompression, drowning and hypothermia.
Book Synopsis The Physician’s Guide to Diving Medicine by : C.W. Shilling
Download or read book The Physician’s Guide to Diving Medicine written by C.W. Shilling and published by Springer. This book was released on 1984-11-30 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is designed to be a physician's guide for those interested in diving and hyperbaric environments. It is not a detailed document for the erudite researcher; rather, it is a source of information for the scuba-diving physician who is searching for answers put to him by his fellow nonmedical divers. Following the publication of The Underwater Handbook: A Guide to Physiology and Performance for the Engineer there were frequent requests for a companion volume for the physician. This book is designed to fill the void. Production of the book has been supported by the Office of Naval Research and by the Bureau of Medicine and Surgery, Research and Development Command, under Navy Contract No. NOOOOI4-78-C-0604. Our heartfelt thanks go to the many authors without whose contributions the book could not have been produced. These articles are signed by the responsible authors, and the names a~e also listed alphabetically in these preliminary pages. Every chapter was officially reviewed by at least one expert in the field covered and these reviewers are also listed on these pages. Our thanks go to them for their valuable assistance. We are grateful to Marthe Beckett Kent for editing Chapter III. Our thanks also go to Mrs. Carolyn Paddon for typing and retyping the manuscripts, and to Mrs. Catherine Coppola, who so expertly handled the many fiscal affairs.
Book Synopsis Principles of Clinical Medicine for Space Flight by : Michael R. Barratt
Download or read book Principles of Clinical Medicine for Space Flight written by Michael R. Barratt and published by Springer Nature. This book was released on 2020-01-02 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt: In its first edition, Principles of Clinical Medicine for Space Flight established itself as the authoritative reference on the contemporary knowledge base of space medicine and standards of care for space flyers. It received excellent notices and is used in the curricula of civilian and military training programs and used as a source of questions for the Aerospace Medicine Certifying Examination under the American Board of Preventive Medicine. In the intervening few years, the continuous manning of the International Space Station has both strengthened existing knowledge and uncovered new and significant phenomena related to the human in space. The Second Edition incorporates this information. Gaps in the first edition will be addressed with the addition new and revised chapters. This edition is extensively peer reviewed and represents the most up to date knowledge.
Book Synopsis Decompression Sickness and Nitrogen Elimanation in Man: Influence of Immersion, Body Position and Ambient Temperature with Special Reference to Hemodynamics by : Ulf Balldin
Download or read book Decompression Sickness and Nitrogen Elimanation in Man: Influence of Immersion, Body Position and Ambient Temperature with Special Reference to Hemodynamics written by Ulf Balldin and published by . This book was released on 1973 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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