This report describes compressed air trials carried out at the National Hyperbaric Centre in autumn 2000. The purpose of the trials was to evaluate the effect, on decompression bubble formation, of using oxygen as the breathing gas for the final part of decompression following a standard Blackpool Table decompression. The trials covered: selection of hyperbaric profile; theoretical predictions; design of trials; procedures; lost data; pressure gauge calibrations and subject approval and briefing. Concludes that oxygen used on a standard Blackpool Table decompression reduces the formation of gas bubbles.
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