[abstract] ONE YEAR FOLLOW UP OF PULMONARY FUNCTION AFTER TWO SATURATION DIVES TO PRESSURES OF 0.25 AND 3.7 MPa.

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[abstract] ONE YEAR FOLLOW UP OF PULMONARY FUNCTION AFTER TWO SATURATION DIVES TO PRESSURES OF 0.25 AND 3.7 MPa.

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Title: [abstract] ONE YEAR FOLLOW UP OF PULMONARY FUNCTION AFTER TWO SATURATION DIVES TO PRESSURES OF 0.25 AND 3.7 MPa.
Author: Thorsen, E; Gulsvik, A
Abstract: To assess the contribution of hyperoxia to reduced pulmonary function after a deep saturation dive, a shallow saturation dive to a pressure of 0.25 MPa with the same profile of hyperoxic exposure as in a deep saturation dive to 3.7 MPa was conducted. The densities of the atmospheres during isopression were 1.7 and 6.8 kg·m3. Pulmonary function, including static and dynamic lung volumes and flows and carbon monoxide diffusion capacity (TLco), was measured before, immediately after, one month and one year after the dives. As previously reported there was a significant reduction in TLco and in maximal expiratory flow rates whereas static lung volumes were unchanged immediately after the 0.25 MPa dive. Immediately after the 3.7 MPa dive there was a significant reduction in TLco' maximal expiratory flow rates were unchanged while there was a significant increase in the static lung volumes including total lung capacity. One year after the dives there was a normalization of TLco. In the 0.25 MPa dive there was still a reduction in maximal expiratory flow rates while static lung volumes remained unchanged. In the 3.7 MPa dive the increase in static lung volumes was normalized whereas a significant reduction in maximal expiratory flow rates now was evident. The results indicate that an increase in static lung volumes immediately after the deep dive counteracts a decrease in maximal expiratory flow rates, which does not recover. The findings are consistent with studies indicating development of small airways dysfunction in divers.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting held June 22-26, 1994. Westin Hotel, Denver, Colorado (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/5636
Date: 1994

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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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