Download or read book Dysbaric Osteonecrosis in Divers written by and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Naval Submarine Medical Research Laboratory is conducting a radiological survey to determine the prevalence of dysbaric osteonecrosis in U.S. Navy Divers and to develop epidemiological data related to those aspects of the hyperbaric environment that contribute to the ultimate occurrence of the lesions. Twelve juxta-articular lesions and nine head, neck or shaft lesions have been identified in the extremities of fifteen divers who are radiologically positive cases of dysbaric osteonecrosis among 611 non-randomly selected divers surveyed. While the number of positive cases is too small to draw statistically reliable conclusions, certain trends are evident. Lesions were most common in the shoulders and in older divers. Saturation divers and all other helium divers had almost the same percentage of positive cases but air divers had a slightly lower percentage than either group. Data derived from an enlarging survey population should provide additional insight into the epidemiology of the condition

Download or read book Dysbarism related Osteonecrosis written by and published by . This book was released on 1975 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Decompression Sickness and Dysbaric Osteonecrosis written by Christopher Roy WEATHERLEY and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book DECOMPRESSION SICKNESS DYSBA written by Tai-Hing Lam and published by Open Dissertation Press. This book was released on 2017-01-27 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Decompression Sickness and Dysbaric Osteonecrosis in a Compressed Air Tunnelling Project in Hong Kong" by Tai-hing, Lam, 林大慶, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled "Decompression sickness and dysbaric osteonecrosis in a compressed air tunnelling project in Hong Kong" Submitted by Dr. Tai Hing LAM for the degree of Doctor of Medicine at the University of Hong Kong in July 1988. This thesis is concerned with the application of epidemiology to the study of health and morbidity experience of compressed air workers. The study was both descriptive and analytical and the results should have practical implications for the provision of occupational health services and prevention of morbidity for this group of workers. In the largest compressed air tunnelling project of the Island Line of the Mass Transit Railway System in Hong Kong, 1916 men had an initial medical examination for fitness to work in compressed air. There were 367 men who were declared unfit for employment resulting in an unfit rate of 19.2%. The major disqualifying conditions were lung and cardiovascular diseases. Compressed air work started in October 1982 and ended in May 1984. The maximum working pressure (m.w.p.) used was 3.3 kg/cm2. The Blackpool Tables were used for decompressions. There were 142,140 man-decompressions of 1 kg/cm2 or above and 792 cases of Type I and one case of Type II decompression sickness. The bends rate was 0.56%. The bends rate wasfound to increase with m.w.p. and duration of exposure showing that the Blackpool Tables although satisfactory overall, became less physiologic as pressure and duration of exposure increased. The manifestations of the 793 cases of decompression sickness were generally similar to those reported elsewhere. Oxygen treatment was given to 9 'cases and all were successfully treated. Minimum Effective Pressure Treatment was given to the rest with 9.6% requiring two or more recompressions. Stepwise multiple regression showed that there were four predictors for the pressure of relief and the highest pressure used in recompression respectively, viz. m.w.p., interval before treatment, bends sequence and duration of exposure. The relative risk of new starters in having decompression sickness was 3.69. The individual risk factors for decompression sickness (presence or absence), as shown by logistic regression were m.w.p., number of exposures, past number of bends, job (being a miner) and Quetelet Index. Stepwise multiple regression revealed five predictor variables for the number of bends experienced, viz. ethnicity, m.w.p., Quetelet Index, number of exposures and past number of bends. A total of 912 men had radiological examination of the major joints and 12 definite and 30 suspected cases of dysbaric osteonecrosis were detected. The overall prevalence of definite cases was 1.3% and the prevalence of definite and suspected cases together was4.6%. The distribution of the lesions was symmetrical and 43.1% of the lesions were juxta-articular. All the men with the lesions were asymptomatic at the time of diagnosis. The risk factors for osteonecrosis were studied by including definite and suspected cases. Logistic regression analysis showed that the number of bends ever experienced, the number of hours of work in compressed air in the present contract and age were the three most important risk factors. The finding that those men with more bends had a higher risk of osteonecrosis suggested that measures to reduce bends would also have the effect of reducing osteonecrosis. The incidence of decompression

Download or read book Dysbaric Osteonecrosis written by Charles Wesley Shilling and published by . This book was released on 1983 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dysbaric ostenonecresis in divers written by Charles Arthur Harvey and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Mechanism and Prevention of Decompression Sickness written by Chryssanthos Chryssanthou and published by . This book was released on 1982 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The studies focused on three main areas: Decompression Sickness, Dysbaric Osteonecrosis and Dysbaric Alteration of the Blood-Brain Barrier. On decompression sickness, attempts were made to elucidate pathogenetic mechanisms. Several hypotheses were advanced and novel pathogenetic concepts were proposed. On the basis of new theoretical considerations we were able to develop means for the prevention or amelioration of the disease. Regarding dysbaric osteonecrosis, we developed an animal model which permitted studies on the etiology predisposition and pathogenesis of the disorder. The most recrnt investigations covered by this report involve dysbaric modification of blood-tissue barriers, an observation which was made in our Laboratories few years ago. The report includes an overview (summary) of the investigations conducted in these areas with references to pertinent publications. In lieu of detailed description of the work done, reprints to pertinent publications. In lieu of detailed description of the work done, reprints of representative articles have been attached. We hope that this material might be of help to those interested in the fields of dysbaric disroders.

Download or read book Decompression Sickness written by Brian Andrew Hills and published by John Wiley & Sons. This book was released on 1977 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dysbarium related Osteonecrosis a Symposium 1974 written by National Institute for Occupational Safety and Health and published by . This book was released on 1975 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Early Diagnosis Prompt Recompression Treatment and Histopathology of Experimentally Induced Dysbaic Osteonecrosis in Sheep written by Teng-Fu Lin and published by . This book was released on 1995 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Key Documents of the Biomedical Aspects of Deep sea Diving written by and published by . This book was released on 1983 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full texts of journal articles, reports, or book chapters that "helped to advance the field." Tables of contents in each volume cover all volumes. Last volume contains author and subject indexes.

Download or read book Diving and Subaquatic Medicine written by Carl Edmonds and published by . This book was released on 1992 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rehabilitation of the Paralyzed Diver written by Undersea Medical Society. Workshop and published by . This book was released on 1985 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dysbarism related osteonecrosis written by and published by . This book was released on 1974 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book What is Bends written by Undersea and Hyperbaric Medical Society. Workshop and published by . This book was released on 1991 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Empirical Diving Techniques of Commercial Sea Harvesters written by Undersea and Hyperbaric Medical Society. Workshop and published by . This book was released on 2001 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Underwater Medicine and Related Sciences written by Charles W. Shilling and published by . This book was released on 1973 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: