Nitrogen elimination in man during decompression

Rubicon Research Repository/Manakin Repository

Nitrogen elimination in man during decompression

Show full item record


Title: Nitrogen elimination in man during decompression
Author: Kindwall, EP; Baz, A; Lightfoot, EN; Lanphier, EH; Seireg, A
Abstract: The effect of ambient pressure on inert gas elimination during decompression was investigated using human subjects breathing air in a dry hyperbaric chamber. This was done by measuring nitrogen recovery during three different decompression schedules following identical simulated dives. Five subjects were used, each with normal pulmonary function. In each case the simulated dives consisted of exposure for 40 min to air at 4 ATA corresponding to a depth of about 100 fsw and 28 degrees C. Following these exposures each subject was decompressed in different experiments to 50 fsw (2.515 ATA) and to 10 fsw (1.303 ATA) while breathing a mixture of 80:20 helium-oxygen. In addition, two of these subjects were denitrogenated isobarically, at 100 fsw, breathing 80:20 helium-oxygen. Significant differences in nitrogen-elimination rate were observed, with nitrogen removed most effectively at 50 fsw and least at 100 fsw. To explained these unexpected results it is tentatively suggested asymptomatic bubble formation occurred at both 10 and 50 fsw. *Decompression *Diving Helium Human *Nitrogen Oxygen *Pressure *Respiration Support, U.S. Gov't, Non-P.H.S.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
URI: PMID: 1226586
http://archive.rubicon-foundation.org/2741
Date: 1975

Files in this item

Files Size Format View
1226586.pdf 1.724Mb PDF View/Open

This item appears in the following Collection(s)

  • Undersea Biomedical Research Journal
    The Undersea Baromedical Research journal was published by the Undersea Medical Society, Inc. (now the Undersea and Hyperbaric Medical Society) quarterly from 1974 to 1992 when the name changed to the Undersea and Hyperbaric Medicine Journal.

Show full item record

Browse

My Account