The Risk of Decompression Sickness (DCS) is Influenced by Dive Conditions.

Rubicon Research Repository/Manakin Repository

The Risk of Decompression Sickness (DCS) is Influenced by Dive Conditions.

Show full item record


Title: The Risk of Decompression Sickness (DCS) is Influenced by Dive Conditions.
Author: Vann, RD; Denoble, PJ; Uguccioni, DM; Pollock, NW; Freiberger, JJ; Pieper, CF; Gerth, WA; Forbes, R
Abstract: DAN’s Project Dive Exploration (PDE) gathers data on dive profiles, conditions, and outcomes to assess DCS risk and risk factors. This report investigated the DCS risk in three dive groups: 51,497 PDE warm-water dives; 6,527 PDE cold-water dives; and 2,252 Navy chamber dives. First, DCS risk was predicted for all dives by a probabilistic decompression model that had been calibrated to Navy data. Next, predicted risk and observed incidence were compared for the groups. Finally, predicted risks were recalibrated to all dives combined. Mean observed DCS incidences were 2, 28, and 311 cases per 10,000 dives for warm-water, cold-water, and Navy dives, respectively. Original predictions overestimated observed incidences for warm and cold-water dives but not for Navy dives. With recalibration, mean predicted risk and mean observed incidence were the same. Navy dives had higher predicted risks than warm or cold-water dives, but even for a given dive profile, the groups differed significantly in both recalibrated risk and observed incidence. We conclude: (a) probabilistic models are useful for estimating risk; (b) models may not extrapolate accurately beyond their calibration data; and (c) dive conditions, in addition to dive profiles, may significantly affect risk.
Description: American Academy of Underwater Sciences (http://www.aaus.org/)
URI: http://archive.rubicon-foundation.org/9020
Date: 2005

Files in this item

Files Size Format View
AAUS_2005_14.pdf 492.4Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Browse

My Account