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J Appl Physiol (February 22, 2002). doi:10.1152/japplphysiol.01059.2001
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Articles in PresS, published online ahead of print February 22, 2002
J Appl Physiol, 10.1152/jap.01059.2001
Submitted on October 22, 2001
Accepted on January 7, 2002

Pretreatment With Hyperbaric Oxygen Reduces Gas Bubbles in Decompressed Prawns: Elimination of Gas Nuclei is Suggested

Yehuda Arieli1, Ran Arieli1*, and Amit Marx1

1 Department of Research, Israel Naval Medical Institute, Haifa, Israel

* To whom correspondence should be addressed. E-mail: yehuda_a{at}maoz.org.il.

It is accepted that gas bubbles grow from pre-existing gas nuclei in tissue. The possibility of eliminating gas nuclei may be of benefit in preventing decompression illness. In the present study, we examined the hypothesis that hyperbaric O2 may replace the resident gas in the nuclei with oxygen, and due to its metabolic role eliminate the nuclei themselves. After pretreatment with oxygen prawns were 98% saturated with nitrogen before an explosive decompression at 30 m/min. Ten transparent prawns were exposed in a crossover design to four experimental profiles: a) Ten min compression to 203 kPa with air; b) Ten min compression with oxygen; c) Ten min compression with oxygen to 203 kPa, followed by 12 min air at 203 kPa, and d) Ten min. in normobaric oxygen followed by compression to 203 kPa with air. Bubbles were measured after explosive decompression. We found that pretreatment with hyperbaric oxygen (profile "C") significantly reduces the number of bubbles and bubble volume. We suggest that hyperbaric oxygen eliminate bubble nuclei in the prawn.




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O. Ertracht, R. Arieli, Y. Arieli, R. Ron, Z. Erlichman, and Y. Adir
Optimal oxygen pressure and time for reduced bubble formation in theN2-saturated decompressed prawn
J Appl Physiol, April 1, 2005; 98(4): 1309 - 1313.
[Abstract] [Full Text] [PDF]


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