Effects of a H2-He-O2 mixture on the HPNS up to 450 msw

Rubicon Research Repository/Manakin Repository

Effects of a H2-He-O2 mixture on the HPNS up to 450 msw

Show full item record


Title: Effects of a H2-He-O2 mixture on the HPNS up to 450 msw
Author: Rostain, JC; Gardette-Chauffour, MC; Lemaire, C; Naquet, R
Abstract: A H2-He-O2 mixture with 54 to 56% hydrogen was studied with 6 subjects (professional divers) during 2 dives to 450 m. The 38-h compression was the same as that used with other types of breathing mixtures (He-O2 and He-N2-O2). The results obtained during compression and during the stay at 450 m in H2-He-O2 show that the EEG changes (increase of theta activities in the anterior regions of the skull, decrease of alpha activities) are similar to those found with other respiratory mixtures. On the other hand, the other symptoms of high pressure neurologic syndrome (HPNS) were clearly improved for the same depths. Thus, neurologic symptoms (tremor, dysmetria, myoclonia, drowsiness) are nonexistent, and the performances during psychometric tests remain similar to those of the surface. Hydrogen, with its narcotic potency, suppresses some symptoms of HPNS and seems to open new perspectives for deep diving.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
URI: PMID: 3212843
http://archive.rubicon-foundation.org/2487
Date: 1988

Files in this item

Files Size Format View
3212843.pdf 2.081Mb 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