Theoretical tissue compartment inert gas pressures during a deep dive with and without deep decompression stops: a case analysis.
File(s)
Published version
Author(s)
Buzzacott, P
Papadopoulou, V
Baddeley, A
Petri, NM
Lind, F
Type
Journal Article
Abstract
BACKGROUND: Deep decompression stops are increasingly common in recreational technical diving. Concerns exist that they shift decompression stress back into slower tissues. A diver recorded an exceptional exposure dive, with deeps stops, on a commercially available dive computer. MATERIAL AND METHODS: Using the R package SCUBA tissue inert gas pressures in 17 Bühlmann (ZH-L16A) compartments were estimated from the dive computer recorded profile. The RGBM dive plan generated by the diver's software was similarly interrogated, as was a third profile with reduced deep stops generated using the VPM-B/E model. RESULTS: In this dive the combination of 5 gas switches appeared to ameliorate the effect of deep stops from 76 m depth. CONCLUSIONS: A higher-than-anticipated inert gas content in a decompression mixture, coupled with climbing 200 stairs post-decompression, appear possible risk factors for decompression sickness. Nonetheless, the physiological effect of deep decompression stops during exceptional exposure, even when diving with gas switches, remains urgently to be determined to improve safe decompression following exceptional exposures. Until algorithms utilising deep decompression stops are validated with human data, dive profiles incorporating deep decompression stops should be considered experimental.
Date Issued
2015-03-19
Date Acceptance
2015-03-19
Citation
International Maritime Health, 2015, 66 (1), pp.36-42
ISSN
2081-3252
Publisher
Via Medica
Start Page
36
End Page
42
Journal / Book Title
International Maritime Health
Volume
66
Issue
1
Copyright Statement
© 2015 Via Medica. This is an open access article published under the Creative Common Attribution-Non Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0)
Identifier
http://www.ncbi.nlm.nih.gov/pubmed/25792166
PII: VM/OJS/J/41505
Subjects
Adult
Decompression
Decompression Sickness
Diving
Humans
Male
Noble Gases
Publication Status
Published
Coverage Spatial
Poland