Editing Decompression sickness (section)

== Explanatory notes ==
{{Notelist
| notes=
{{efn
| name = ICD
| [[Isobaric counterdiffusion|Inner ear counter diffusion]] is a rare form of DCS sometimes experienced by divers engaged in [[Deep diving#Ultra-deep diving|extreme deep diving]], caused by switching from a helium-rich gas to a nitrogen-rich gas at the start of a decompression stop. Although nitrogen diffuses more slowly than helium, nitrogen is much more soluble than helium and the total inert gas load in some tissues can temporarily exceed the critical supersaturation limit, resulting in bubble formation. The inner ear is particularly susceptible to this effect. Two of the best-recorded instances of it both occurred at [[Boesmansgat]], South Africa&nbsp;– once to [[Nuno Gomes (diver)|Nuno Gomes]] in an early world record attempt, and later to [[Don Shirley (diver)|Don Shirley]] when he tried to rescue [[David Shaw (diver)|David Shaw]] on his fateful dive trying to recover the body of [[Deon Dreyer]], who had been one of Gomes's support divers.
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{{efn
| name = stops
| Tables based on US Navy tables, such as the [[NAUI]] tables have a safety stop at {{convert|15|ft|m|0}};{{harv|Lippmann & Mitchell|p=219}} [[British Sub-Aqua Club|BSAC]] tables have a safety stop at {{convert|6|m|ft}}; Bühlmann tables have a safety stop at {{convert|3|m|ft|0}}.
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:1. {{note|a|a}} autochthonous: formed or originating in the place where found.