Health and efficiency in trimix versus air breathing in compressed air workers.

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Health and efficiency in trimix versus air breathing in compressed air workers.

Show simple item record Van Rees Vellinga, TP Verhoeven, AC Van Dijk, FJ Sterk, W 2007-12-05T03:02:17Z 2007-12-05T03:02:17Z 2006
dc.identifier.citation Undersea Hyperb Med. 2006 Nov-Dec;33(6):419-27. en
dc.identifier.other 17274311
dc.description Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc. en
dc.description.abstract The Western Scheldt Tunneling Project in the Netherlands provided a unique opportunity to evaluate the effects of trimix usage on the health of compressed air workers and the efficiency of the project. Data analysis addressed 318 exposures to compressed air at 3.9-4.4 bar gauge and 52 exposures to trimix (25% oxygen, 25% helium, and 50% nitrogen) at 4.6-4.8 bar gauge. Results revealed three incidents of decompression sickness all of which involved the use of compressed air. During exposure to compressed air, the effects of nitrogen narcosis were manifested in operational errors and increased fatigue among the workers. When using trimix, less effort was required for breathing, and mandatory decompression times for stays of a specific duration and maximum depth were considerably shorter. We conclude that it might be rational--for both medical and operational reasons--to use breathing gases with lower nitrogen fractions (e.g., trimix) for deep-caisson work at pressures exceeding 3 bar gauge, although definitive studies are needed. en
dc.format.extent 259342 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Undersea and Hyperbaric Medical Society, Inc. en
dc.subject DIVERS en
dc.subject TRIMIX en
dc.subject AIR en
dc.subject Tunnel en
dc.subject work en
dc.subject commercial en
dc.subject decompression sickness en
dc.subject nitrogen narcosis en
dc.subject BREATHING GASES en
dc.subject.mesh Evaluation Studies Adult Air* Decompression Decompression Sickness/etiology Decompression Sickness/physiopathology Decompression Sickness/prevention & control* Efficiency/physiology* Exertion/physiology Health Status* Helium/administration & dosage* Humans Male Netherlands Nitrogen/administration & dosage* Occupational Diseases/etiology Occupational Diseases/physiopathology Occupational Diseases/prevention & control* Oxygen/administration & dosage* Time Factors Helium Nitrogen Oxygen trimix en
dc.title Health and efficiency in trimix versus air breathing in compressed air workers. en
dc.type Article en

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