Seadragon VI: a 7-day dry saturation dive at 31 ATA. I. Objectives, design, and scope

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Seadragon VI: a 7-day dry saturation dive at 31 ATA. I. Objectives, design, and scope

Show simple item record Nakayama, H en_US Murai, T en_US Hong, SK en_US 2006-08-24T02:54:49Z 2006-08-24T02:54:49Z 1987 en_US
dc.identifier.citation Undersea Biomed Res. 1987 Sep;14(5):377-85. en_US
dc.identifier.other Undersea Biomed Res en_US
dc.identifier.uri PMID: 3672650 en_US
dc.description Undersea and Hyperbaric Medical Society, Inc. ( ) en_US
dc.description.abstract Seadragon VI dive was designed to determine the effects on humans of a prolonged exposure to a 31 ATA, dry helium-oxygen environment. The specific objectives were to study a) circadian changes in renal-endocrine function, including a comprehensive characterization of nocturia; b) cardiovascular-endocrine responses to a 90 degree tilt; c) erythrocyte functions, including intracellular organic phosphates and the Donnan ratio for chloride; and d) blood enzyme profiles. The experiment was conducted over a period of 30 d in September and October 1984 at the Japan Marine Science and Technology Center, Yokosuka. Following a 5-d predive control period at 1 ATA in air, 4 male divers spent 7 d at 31 ATA in a helium-oxygen environment, and then returned to 1 ATA air after 12 d of decompression. They stayed an additional 3 d inside the chamber for postdive control measurements. The chamber temperature was maintained at 27-28 degrees C during pre- and postdive periods, 31-32 degrees C at 31 ATA, and 28-31 degrees C during decompression. At 31 ATA, PO2 and PCO2 of the chamber gas were maintained at approximately 225 and 2 mmHg, respectively. In this introductory paper, physical and physiologic characteristics of individual subjects, the major daily activity schedule, daily caloric intake, and the scope of investigation are presented. en_US
dc.format.extent 1389606 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights Undersea and Hyperbaric Medical Society, Inc. ( ) en_US
dc.source.uri null en_US
dc.subject helium en_US
dc.subject heliox en_US
dc.subject dry en_US
dc.subject saturation en_US
dc.subject test plan en_US
dc.subject Circadian Rhythm en_US
dc.subject Erythrocytes en_US
dc.subject Enzymes en_US
dc.subject.mesh Adult Atmospheric Pressure* Circadian Rhythm Decompression Diving* Endocrine Glands/physiology Enzymes/blood Erythrocytes/physiology Humans Kidney/physiology Male Research Design* Time Factors Substances: Enzymes en_US
dc.title Seadragon VI: a 7-day dry saturation dive at 31 ATA. I. Objectives, design, and scope en_US

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  • 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.

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