That sounds like omitted deco, rather than IWR. Was the victim diagnosed with DCS prior to re-entry into the water?
All the evidence I have seen on her death indicates that although she was attempting to deal with an omitted decompression issue, her death was due to a combination of being OOA and technical problems and had nothing to do with DCS. She had no air in her own tank and redescended holding (not wearing) another BCD and tank, with that other BCD being her only means of achieving buoyancy. She apparently lost her grip on that, and a technical problem prevented her from ditching her own weight.
This COD is not to be rehashed here some seventeen years later as per the Accidents & Incidents Forum, and is obviously off-topic to this thread . . . Is that clear Andy & John?
Already implied enough in passing & context from
Post#13, and no need to insensitively interrogate or "correct"
@drbill 's recollection and remembrance (the decedent's husband was a dive buddy of mine, and it is still hard to reconcile with the tragedy for me as well).
(Mods, edit the above as necessary)
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Back on topic:
I had three separate type I DCS incidents experienced on Truk Lagoon Trips in Oct-Nov 2014 -all were upper Right arm/Shoulder classical acute "pulsing" symptoms with increasing pain within 90min time post-dive, and occurring within three to four days of starting Open Circuit Deep Air bottom mix dives with 50% & O2 deco (two tech deco dives per day with a 3 hour SIT). Possible contributing factors were dehydration, insufficient "acclimatization" to the tropical environment, and no prior "work-up" practice deco dives to sensitize the body's immune/inflammatory response system to high FN2 saturation & resultant residual bubbles in slow tissues & venous blood vessels (first early AM deep dive with deco of that trip was SF Maru at 51msw ave depth, 45min BT and over two-and-a-half hours runtime, after long trans-pacific flight from Los Angeles arriving late in the night before).
All DCS type I Pain Symptoms at that time in Oct-Nov 2014 were resolved with Oxygen In-Water-Recompression (O2 IWR) sessions which were performed off the end of Truk Stop Hotel Pier. Lying prone & relaxed at 9m depth breathing standard open-circuit non-face mask regs, on a sandy bottom in 28°C water temp, the modified Australian Method IWR as taught by UTD was used -with either 30, 60 or 90min of elective prescribed O2 breathing therapy at 9msw depth (10min O2:with 5min Air Break); and then slow 0.1m/min ascent to surface (same breathing 10minO2:with 5min Air Break). Went with 60 minutes O2 time at 9msw. . .
So choosing 60 minutes of O2 time at 9msw in my case example, you alternate breathing 10min on Oxygen, and then take a 5min break on Air for a total bottom time of 90 minutes (that's 60min O2 time plus 30min Air Breaks for 90min total bottom time at 9msw), and on the slow 0.1meter-per-min O2 breathing ascent you have to hold at every 1 meter of ascent for the 5min Air Break: a time-to-surface of 135 minutes from 9msw. So the total treatment time would be 90min bottom plus 135min ascent equals 225 minutes. Can be done with an AL80/11L cylinder of Oxygen and another of Air on Open Circuit. .
