[abstract] EFFECTS ON BODY TEMPERATURE OF CONTINUOUS HYPEROXIA AT 1.5, 2.0, 2.5 and 3.0 ATA IN MAN (IN PREDICTIVE STUDIES V).

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[abstract] EFFECTS ON BODY TEMPERATURE OF CONTINUOUS HYPEROXIA AT 1.5, 2.0, 2.5 and 3.0 ATA IN MAN (IN PREDICTIVE STUDIES V).

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Title: [abstract] EFFECTS ON BODY TEMPERATURE OF CONTINUOUS HYPEROXIA AT 1.5, 2.0, 2.5 and 3.0 ATA IN MAN (IN PREDICTIVE STUDIES V).
Author: Gelfand, R; Clark, JM; Lambertsen, CJ
Abstract: Body temperatures of rats decrease markedly and progressively during hyperoxia at 02 pressures of 1. 0 to 5.8 ATA, with rate of decrease proportional to 02 pressure (1). Comprehensive investigation of limits of 02 tolerance in man (PS V) provided an opportunity to investigate effects of hyperoxia on body temperature during extended human exposures (17.7, 9.7, 5.7 and 3.5 hrs. at 1.5, 2.0, 2.5, and 3.0 ATA respectively). Small decrements in body temperature were observed during the course of the 02 exposures at 2.0, 2.5, and 3.0 ATA, but not at 1.5 ATA 02 or during 20 hr. exposures to air at 1.0 ATA, Calculations based on work of Hanson (2) indicate much of the increase in the rate of heat loss required to account for the small observed decrements in body temperature was via increased respiratory heat loss due to increased gas density. It is not clear from these observations whether or not thermal regulatory mechanisms were affected by hyperoxia. However, even for the extended 02 exposure durations of these investigations, the observed small decrements in body temperature are not physiologically important, and they are of no significance to use of hyperoxia in therapy or in decompression for increased rate of inert gas elimination. Supported in part by NMRDC Contract N00014-0l-C0826, NASA Contract NAS 9-17238, and the State of Pennsylvania through the Benjamin Franklin Partnership. (1), Puglia, et.al. J. Appl. Physiol. 36(2), 1974. (2). Hanson, R. de G., J. Appl. Physiol. 37(1), 1974.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting held May 26-30, 1987. The Hyatt Regency Hotel, Baltimore, Maryland (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/5574
Date: 1987

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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