Document Detail


Decompression profile and bubble formation after dives with surface decompression: experimental support for a dual phase model of decompression.
MedLine Citation:
PMID:  14620098     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study was initiated in order to determine the effect of decompression profiles on bubble formation following surface decompression using oxygen. Following an air dive to 496 kPa (130 fsw) for 90 minutes, three different profiles were tested in the pig; a USN staged decompression profile, a profile using linear continuous decompression with the same total decompression time as the USN profile (ABI) and a linear profile with half the total decompression time compared to the the first two (ABII). The subsequent surface decompression at 220 kPa lasted 68 minutes for all three schedules. The study demonstrated that, following final decompression, the two linear profiles produced the lowest amount of vascular gas, with the fastest profile producing significantly less bubbles in the Pulmonary artery than the other two. Similar results were obtained in the jugular vein. The results are in qualitative agreement with model simulation using the Reduced Gradient Bubble Model (RGBM), demonstrating that the controlling tissues are reduced from those with a half time of 40 minutes using the USN procedure to 5 minutes using the fastest linear profile.
Authors:
A O Brubakk; A J Arntzen; B R Wienke; S Koteng
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc     Volume:  30     ISSN:  1066-2936     ISO Abbreviation:  Undersea Hyperb Med     Publication Date:  2003  
Date Detail:
Created Date:  2003-11-17     Completed Date:  2003-12-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9312954     Medline TA:  Undersea Hyperb Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  181-93     Citation Subset:  IM; S    
Affiliation:
Department of Physiology and Biomedical Engineering, NTNU, N-7006 Trondheim, Norway.
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MeSH Terms
Descriptor/Qualifier:
Animals
Decompression / methods*,  standards
Decompression Sickness / etiology*
Diving / adverse effects,  physiology*
Female
Jugular Veins*
Male
Models, Animal
Oxygen / administration & dosage*
Pulmonary Artery*
Swine
Water
Chemical
Reg. No./Substance:
7732-18-5/Water; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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