Statistically Based Decompression Tables IX: Probabilistic Models of the Role of Oxygen in Human Decompression Sickness.

Rubicon Research Repository/Manakin Repository

Statistically Based Decompression Tables IX: Probabilistic Models of the Role of Oxygen in Human Decompression Sickness.

Show full item record


Title: Statistically Based Decompression Tables IX: Probabilistic Models of the Role of Oxygen in Human Decompression Sickness.
Author: Parker, EC; Survanshi, SS; Thalmann, ED; Weathersby, PK
Abstract: While probabilistic models of human decompression sickness (DCS) have been successful in describing both the level and timing of DCS risk in a wide variety of N2-O2 data, they have failed to account for the observed DCS risk in the currently available collection of dives with significant periods of 100 percent oxygen breathing. The best model to date, calibrated with over 2300 air and N2-O2 dives, under-predicts the DCS risk of these O2 dives by 60 percent, whether O2 is breathed during in-water decompression or during surface decompression procedures. This overestimation of the benefit of 0 is due to an exaggerated acceleration of N2 wash-out during 02 breathing. Seven-hundred and twenty-nine 02 decompression and surface decompression dives were added to the calibration data set. Fitting the existing base model to the new combined data set resulted in some improvement in OCS prediction n 02 data, but DCS predictions remained about 30 percent below the observed level. Three classes of 02-specific modifications to the base model were proposed: (1) modification of inert gas kinetics as a function of 02 pressure, (2) direct contribution of DCS risk as a function of either O pressure or fraction.
Description: Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: Unclassified; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Department of Defense and the Defense Technical Information Center (http://www.dtic.mil/) is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested.
URI: http://archive.rubicon-foundation.org/3410
Date: 1996

Files in this item

Files Size Format View
NMRI_1996_05_stat9.pdf 108.7Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Browse

My Account