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Douglas Buckley wrote: > > At 11:56 PM 2/5/97 +1100, you wrote: > >>Has anyone had any experience with the use of Doppler Meters for the > >detection of "Silent Bubbles"? > > > >Do they work and are they of any value? Yes, some Doppler units can be used to detect bubbles in divers following dives. The main difficulty is in the training of a person to listen for the bubbles. You have to be able to pick bubbles out from an array of cardiac signals (subclavians signals are easier) and make a determination of their their magnitude. Their value is in evaluating "decompression stress." There is still some discussion of their value, but DCIEM has shown a general correlation between bubble grades and decompression sicknes. A diver with no detected bubbles is less likely to have decompression sickness and a diver with decompression sickness in likely to have bubbles detected. However this DOES NOT mean that you can't have a diver with decompression sickness and no detected bubbles, or a diver with a high level of bubbles detected and no symptoms of decompression sickness... -- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* Karl E. Huggins huggins@mi*.us*.ed* USC Catalina Hyperbaric Chamber (310) 510-4020 Office P.O. Box 5069 (310) 510-4023 Chamber 1 Big Fisherman's Cove (310) 510-1364 FAX Avalon, CA 90704 USA "Knowledge is Good." -Faber -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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