[abstract] INTRAVENOUS GAS EMBOLI IN MAN AFTER SELECTED OPEN OCEAN AIR SCUBA DIVES.

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[abstract] INTRAVENOUS GAS EMBOLI IN MAN AFTER SELECTED OPEN OCEAN AIR SCUBA DIVES.

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Title: [abstract] INTRAVENOUS GAS EMBOLI IN MAN AFTER SELECTED OPEN OCEAN AIR SCUBA DIVES.
Author: Pilmanis, AA
Abstract: A doppler ultrasonic blood flowmeter (Spencer Model A Precordial), an objective non-invasive method of detecting intravascular gas bubbles, was used to characterize the time-course of post-dive intravenous "silent bubble" occurrence. Data from 31 subject-dives involving 12 divers are presented. Three dive profiles were used: (1) 100 ft. for 25 min. with no decompression, (2) 100 ft. for 30 min. with 3 min. @ 10 ft., and (3) 190 ft. for 10 min. with 2 min. @ 20 ft. and 4 min. @ 10 ft. A special "diver ergometer" was fabricated for standardizing underwater work loads. For quantification of the bubble data, an electronic "bubble counter" was developed. No symptoms of decompression sickness were seen. Intravenous "silent bubbles" were detected after all of the dives. The emboli ap-peared within a few minutes after surfacing, peaked within an hour, and declined to control levels by 3 hours post-dive. Significant differences from controls occurred at the 5, 25, 30 and 45 minute post-dive record- ings. Significant differences occurred between the bubble count means of individual subject-dives of each of the 3 dive profiles. It is concluded that: (1) man can clear through the lungs relatively large quantities of post-dive venous bubbles without developing decompression sickness symptoms, (2) these bubbles are present at surfacing and (3) there are great individual differences in the number of bubbles present after a specific dive profile.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting held May 10-11, 1974. Hilton Hotel, Washington, D.C. (http:www.uhms.org)
URI: http://archive.rubicon-foundation.org/39
Date: 1974

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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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