Taboo Decompression

[Raphus]

Both died of dcs on a deco stop? Where was this?

Germany Berlin. Jeah not on a normal deco stop. More a recompression..
Information was only gathered by the computer profile, but that's what they said after analysis.

Way to fast ascent from depth. A few minutes at the surface and then recompress.

 

[Celt]

Say I was making a 20 minute deco stop at 10 feet and a swell takes me to the surface , I will recompress by descending to a deeper depth and make a much longer decompression obligation . A horror story like the mid west diver who dies in Key West from a fast ascent and his rescue taking over 3 hours from dock to chamber . A west coast dive shop owner who teaches middle east arm forces and advanced mix gas + CCR did mention using in water recompression at Truk Lagoon a few weeks before as we talked .

I wouldn’t worry about the swell part just set your last stop at 20 feet, I solo and do deco dives. A number of times we done IWR and it works. As soon as the diver is brought to depth the symptoms are relieved. But there’s some problems solo. You’re sick getting in the water. If when you get to depth the symptoms don’t subside it’s not DCS and how will you get back out. I’d have to be bad and 100% sure it was DSC before getting back in the water. Obviously if I skipped a heap of decompression I get back in and complete an omitted schedule.

 

[Celt]

Germany Berlin. Jeah not on a normal deco stop. More a recompression..
Information was only gathered by the computer profile, but that's what they said after analysis.

Way to fast ascent from depth. A few minutes at the surface and then recompress.

Unfortunately IWR won’t fix a gas embolism everyone brought to a chamber don’t survive either. But I’d definitely pick the chamber every time.

 

[rjack321]

You seem to be stating that oxygen on the boat is equivalent to oxygen at depth? I find it hard to believe that crushing bubbles at depth and then hanging out there (on oxygen) has zero potential benefit.

A given volume of O2 is going to last 50% longer on the surface than at 20ft - which for a scant few minutes really isn't IWR its redoing deco. So less time on o2, a whole pile of extra risk, and when/if you surface you still have made zero progress towards getting to a higher level of care

 

[Wibble]

Germany Berlin. Jeah not on a normal deco stop. More a recompression..
Information was only gathered by the computer profile, but that's what they said after analysis.

Way to fast ascent from depth. A few minutes at the surface and then recompress.

Berlin? Not known for its vast expanses of water. Was it a diving lake or a "special" location?

Even a small amount more information would help understand the circumstances surrounding the fatalities.

 

[berndo]

Germany Berlin. Jeah not on a normal deco stop. More a recompression..
Information was only gathered by the computer profile, but that's what they said after analysis.

Way to fast ascent from depth. A few minutes at the surface and then recompress.

Are you talking about the 2 instructors in the Webellinsee? I didn't see any analysis, but only people guessing online without much info.
It sounded like they panicked, bolded and went back down, and weren't they on air? I don't know, but that one didn't sound like an accident due to recompression.
Who did the analysis?
If they were in such bad condition that they both died from dcs at 6m, minutes after a dive to 34m, I'm not sure they could have survived sitting and waiting for the chopper.

If I ever felt symptoms, I would go back in as long as conditions allowed for it. I always thought that the faster you can recompress the better, even before I saw that video when it was first posted on youtube.

 

[Raphus]

Are you talking about the 2 instructors in the Webellinsee? I didn't see any analysis, but only people guessing online without much info.
It sounded like they panicked, bolded and went back down, and weren't they on air? I don't know, but that one didn't sound like an accident due to recompression.
Who did the analysis?
If they were in such bad condition that they both died from dcs at 6m, minutes after a dive to 34m, I'm not sure they could have survived sitting and waiting for the chopper.

If I ever felt symptoms, I would go back in as long as conditions allowed for it. I always thought that the faster you can recompress the better, even before I saw that video when it was first posted on youtube.

Yes if I remember correctly it was on air.
It was not an accident caused by recompression.

My intention was, that an dcs hit(or something else) is worse underwater and want to give an example. Maybe it was not the best example.
The fact stands, that recompression is dangerous, just because of the reason, that the victim is underwater. If the medical status gets worse, it helps to be at the surface..

 

[Celt]

If people are serious about IWR, you must be setup for it. Realistically you need to go to 60 feet on 50% O2. And get on 100% as soon as possible, depending on the depth that symptoms subside.

 

[berndo]

My intention was, that an dcs hit(or something else) is worse underwater and want to give an example. Maybe it was not the best example.
The fact stands, that recompression is dangerous, just because of the reason, that the victim is underwater. If the medical status gets worse, it helps to be at the surface..

Do they know if they tried to recompress or did they pass out and sink? IIRC, they bolted from about 23m, stayed on the surface for 5 min and went down to 6m and were found dead at 6m. After they bolted they might have been swimming towards shore for 5 min and sank and drowed there... I don't know, but the case was weird. Was there an actual report?

I think it depends on the situation and on the severity of the symptoms. I'm not sure the recompression (if there even was recompression) play a role in the case.

 

[happy-diver]

The thing about chamber timing is that the heart is not happy trying to pump gaseous blood, froth