In-Water Recompression, Revisited

[cerich]

Doing some catch-up reading here:



You sir are a master of understatement.

---

Are there any that have a pressure vessel certification that anyone cares about like:

• ASME/PVHO
• DNV
• Lloyds
• ABS
• etc?

No offense to my ancestors but there aren't very many vessels of opportunity under the Italian flag. The only one I can think of is FlexiDec, which is certified by RINA (Registro Italiano Navale) only. We had some RINA-only certified chambers onboard and the vessel's captain (via the owners and insurers) wouldn't let anyone pressurize them. Maybe the different certification agencies and marine insurers are playing nicer these days?

---

(discussion and perspective, not argument) The world's navies are the only place I can think of were a hyperbaric doc is onboard during diving operations. The problem is most (not all) get the diver many hours or days after symptoms appear. I can only assume that the much more favorable outcomes that are common in the offshore commercial diving industry are significantly influenced by very short "time to treatment". This is my main motivation behind supporting IWR. As mentioned before, everyone walked out of treatments joking. We had some pretty terrible experimental tables in the early days so one would think that more diver's careers would have ended.

IMHO, even the most conservative and simple IWR, like 20' on an O2 stage bottle, should be done at the first suspicion. You have to over-treat often and early to avoid the much rarer frustration of a hyperbaric doc left to deal with damage that has already been done.

Going below deck and lying down after a dive rather than voicing concerns appears to be a recurring thread in incidence reports.

kind of.

http://www.sosgroup.co/admin/downloads/SOSG Technical Specification Iss01 220914.docm.pdf

was just going to post the hyperlite

 

[Akimbo]

kind of.

http://www.sosgroup.co/admin/downloads/SOSG Technical Specification Iss01 220914.docm.pdf

Expensive? Leasable?

 

[cerich]

Expensive? Leasable?

no idea if anybody is leasing, expensive? depends on the pockets. low 6 figures

 

[Wookie]

For a hyperlite? Brand new $75k. Used with a new liner about $45k. Used (needs a new liner every 5 years) about $30k.

I know lots of folks who have them. If you want to lease one, it isn't a problem. Rutkowski hates them, because the patient can't be accessed when in the hyperlite.

 

[Akimbo]

edit:

For a hyperlite? Brand new $18k. Used with a new liner about $12k. Used (needs a new liner every 5 years) about $8k.

Low 5 figures not 6... a lot more doable.

 

[cerich]

A DLC and LP compressor can be had for a lot less than that; and has better resale value.

let me know how it transports..actually i know.

That said..I was way off, see Franks reply above

 

[Wookie]

A DLC and LP compressor can be had for a lot less than that; and has better resale value.

The hyperlite breaks down into 4 pelican cases. A DLC does not....

 

[Wookie]

The new multi-place chamber the Navy is putting everywhere is the bomb. There aren't any in the DRMO system yet, but they are coming....

 

[Akimbo]

For a hyperlite? Brand new $75k. Used with a new liner about $45k. Used (needs a new liner every 5 years) about $30k...

OK, that pricing sounds more like what I would expect. I would be conflicted though. Is the thought of being in one worse than turning it over to airline baggage handlers? Seriously, $45K every five years is the real show-stopper.

...I know lots of folks who have them. If you want to lease one, it isn't a problem. Rutkowski hates them, because the patient can't be accessed when in the hyperlite.

That's a common opinion of the torpedo (monoplace) chambers -- fabric, metal, or clear plastic. I was in one of these Galeazzi once for about an hour once.

I fell asleep but a lot of people got really freaked. You really have to trust the folks outside.

There were some around but they didn't sell many in the US. I did notice one on the Calypso in 1969 but it didn't look like it got much use given its position in the hold. There is also a rusted derelict in Chuuk. For all I know it is the same one.

My biggest reservation with torpedos is what do you do if a team gets hit? Draw straws?

 

[Duke Dive Medicine]

Doing some catch-up reading here:



You sir are a master of understatement.

---

Are there any that have a pressure vessel certification that anyone cares about like:

• ASME/PVHO
• DNV
• Lloyds
• ABS
• etc?

No offense to my ancestors but there aren't very many vessels of opportunity under the Italian flag. The only one I can think of is FlexiDec, which is certified by RINA (Registro Italiano Navale) only. We had some RINA-only certified chambers onboard and the vessel's captain (via the owners and insurers) wouldn't let anyone pressurize them. Maybe the different certification agencies and marine insurers are playing nicer these days?

---

(discussion and perspective, not argument) The world's navies are the only place I can think of were a hyperbaric doc is onboard during diving operations. The problem is most (not all) get the diver many hours or days after symptoms appear. I can only assume that the much more favorable outcomes that are common in the offshore commercial diving industry are significantly influenced by very short "time to treatment". This is my main motivation behind supporting IWR. As mentioned before, everyone walked out of treatments joking. We had some pretty terrible experimental tables in the early days so one would think that more diver's careers would have ended.

IMHO, even the most conservative and simple IWR, like 20' on an O2 stage bottle, should be done at the first suspicion. You have to over-treat often and early to avoid the much rarer frustration of a hyperbaric doc left to deal with damage that has already been done.

Going below deck and lying down after a dive rather than voicing concerns appears to be a recurring thread in incidence reports.

FlexiDec is the only one I've ever had my hands on and I won't pretend to know anything about their construction. I looked on their website but there's not much info there. Definitely concur with your comment about time to treatment influencing outcome, that is borne out in the literature. That is one of the advantages of IWR in the proper hands.

Best regards,
DDM