| A Log Logistic Survival Model Applied to Hypobaric Decompression Sickness Contributor(s): Conkin, Johnny (Author), Nasa Technical Reports Server (Ntrs) (Created by) |
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ISBN: 1289147124 ISBN-13: 9781289147129 Publisher: Bibliogov OUR PRICE: $14.96 Product Type: Paperback Published: June 2013 |
| Additional Information |
| BISAC Categories: - Political Science |
| Physical Information: 0.06" H x 7.44" W x 9.69" (0.15 lbs) 28 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: Decompression sickness (DCS) is a complex, multivariable problem. A mathematical description or model of the likelihood of DCS requires a large amount of quality research data, ideas on how to define a decompression dose using physical and physiological variables, and an appropriate analytical approach. It also requires a high-performance computer with specialized software. I have used published DCS data to develop my decompression doses, which are variants of equilibrium expressions for evolved gas plus other explanatory variables. My analytical approach is survival analysis, where the time of DCS occurrence is modeled. My conclusions can be applied to simple hypobaric decompressions - ascents lasting from 5 to 30 minutes - and, after minutes to hours, to denitrogenation (prebreathing). They are also applicable to long or short exposures, and can be used whether the sufferer of DCS is at rest or exercising at altitude. Ultimately I would like my models to be applied to astronauts to reduce the risk of DCS during spacewalks, as well as to future spaceflight crews on the Moon and Mars. |