[abstract] USING THE UHMS VALIDATION WORKSHOP GUIDELINES TO SET UP A TRIMIX DIVING PROGRAM FOR ARCHAEOLOGICAL RESEARCH.

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[abstract] USING THE UHMS VALIDATION WORKSHOP GUIDELINES TO SET UP A TRIMIX DIVING PROGRAM FOR ARCHAEOLOGICAL RESEARCH.

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Title: [abstract] USING THE UHMS VALIDATION WORKSHOP GUIDELINES TO SET UP A TRIMIX DIVING PROGRAM FOR ARCHAEOLOGICAL RESEARCH.
Author: Hamilton Jr, RW; Cockrell, WA; Stanton, GR
Abstract: Warm Mineral Springs is a sink hole laden with well preserved artifacts, some 50-55 metres deep in the current work zone. Previous diving has been with USN air tables using in water oxygen, but this limits bottom time and causes too much narcosis. Trimix breathing mixtures of O2, He, and N2 promise to improve this, but no decompression tables are publicly available. Recreational divers have used trimix tables with outstanding success to depths well beyond the present WMS range and afford an experience base for developing trimix tables for WMS. The flow chart in the Workshop on Validation of Decompression Tables (UHMS 74(VAL) 1-1-88) suggests that a developing organization's Decompression Monitoring Board can take interpolative steps without chamber testing. A DMB organized by the Dive Control Board of Florida State University determined that conservative trimix tables could be implemented at the "operational evaluation" stage without chamber testing nor the need for informed consent, and this was approved by the DCB and confirmed by FSU's IRB. Conservative tables were developed by the same algorithm as the data base of about 100 field trimix dives; they use 21% O2 and 40% He, balance N2, with 50% enriched air nitrox from 21 msw to 6 msw, and 100% oxygen from there to the surface. Special precautions for these provisional dives include backup tables for various contingencies, an onsite chamber, a comprehensive medical plan, doppler monitoring, intensive training and supervision, and detailed records keeping. Diving is underway, with great enthusiasm and apparent success.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Joint Annual Scientific Meeting with the International Congress for Hyperbaric Medicine and the European Undersea Biomedical Society held 11-18 August 1990. Okura Hotel, Amsterdam, The Netherlands (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/7107
Date: 1990

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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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