SURFACE INTERVAL OXYGEN REPETITIVE DIVE TABLES: A SUMMARY REPORT

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SURFACE INTERVAL OXYGEN REPETITIVE DIVE TABLES: A SUMMARY REPORT

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Title: SURFACE INTERVAL OXYGEN REPETITIVE DIVE TABLES: A SUMMARY REPORT
Author: Vann, RD; Gerth, WA
Abstract: Divers at elevated pressure absorb excess nitrogen through their lungs. This nitrogen dissolves in the tissues and upon return to atmospheric pressure sometimes forms bubbles that cause decompression sickness (DCS). DCS risk can be reduced if a diver breathes oxygen to eliminate the dissolved nitrogen. Oxygen breathing underwater entails a risk of CNS oxygen toxicity, but oxygen can be breathed on the surface without toxicity. This study investigated the effects on DCS risk of breathing oxygen on the surface after diving. The study objective was to test the ability of oxygen breathing at the surface (SIO2 -- surface interval oxygen) after each of two dives to extend the duration of the second dive beyond the time specified by current U.S. Navy decompression tables. Human trials were conducted to provide data from which a dose-response curve could be estimated to describe the relationship between the bottom time of the second dive and its DCS incidence. A probabilistic decompression model was developed and compared with the experimental data. Supported by NOAA/NURP at UNC-W: NA88AA-D-UR004.
URI: http://archive.rubicon-foundation.org/3620
Date: 1996

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