[abstract] TEN YEARS OF PROSPECTIVE STUDIES IN RECREATIONAL DIVING

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[abstract] TEN YEARS OF PROSPECTIVE STUDIES IN RECREATIONAL DIVING

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Title: [abstract] TEN YEARS OF PROSPECTIVE STUDIES IN RECREATIONAL DIVING
Author: DeNoble, PJ; Vann, RD; Bennett, PB; Marroni, A
Abstract: INTRODUCTION: DAN America and DAN Europe have independently developed the means for conducting prospective field investigations of recreational diving as it actually occurs. Known as Project Dive Exploration (PDE) and Dive Safety Lab (DSL), these efforts have evolved together and are being combined for simultaneous analysis. METHODS: PDE and DSL enroll volunteers before diving begins, record their depth-time profiles with dive computers, and report their medical outcomes within 48 hours of diving or flying. PDE has investigated divers with diabetes, cold-water wreck divers, live-aboard divers, and dive guides. DSL has used Doppler ultrasound to study the effects of ascent rate and decompression stop depth on the incidence of venous bubbles. RESULTS: In 1995, its first year, PDE collected 800 dives. By 2003, annual data collection was over 22,000 dives. To date, 76,114 dives have been gathered from 7,298 volunteers. Similarly, DSL has collected 25,000 dives from 2,313 divers. Women comprised 27percent of all volunteers. Mean age was 39 years (range 10-76). 38 divers suffered decompression sickness (DCS) for an average incidence of 3.8 DCS cases /10,000 dives. PDE found that the average incidence was not representative of the entire population, and sub-groups had incidences as low as 1 or as high as 28 DCS/10,000 dives (see Vann et al., this meeting). DSL noted that Doppler-detected bubbles could be reduced by decompression stops deeper than conventionally used (see Marroni et al., this meeting). DISCUSSION: Many thousands of dives are needed to investigate the low injury risks of most recreational diving. With over 100,000 dives and 38 DCS incidents, PDE/DSL data can begin to explore how the dive profile relates to DCS probability. When used with DAN's injury and fatality data, safe PDE/DSL dives also can serve as controls in case-control studies of risk factors for injury and death.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
URI: http://archive.rubicon-foundation.org/1483
Date: 2004

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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