Mailing List Archive Mailing List Archive
To toss out a quick answer off the top of my head - I'd say the anti-inflammatories don't help with the osmotic imbalance, but they would mask the symptoms. That always sounds bad, but the inflammation itself can cause problems, too. Since inflammation can lead to perfusion inefficiency (doing bad things to off-gassing), it needs to be controlled, even if the cause of the inflammation is left unaddressed. That being said, steroidal anti-inflammatories (as opposed to Non-Steroidals like Ibuprofen) do interesting things with your salt balance. Whether that has any impact or not in this case of pressure-induced osmotic imbalance, is a question I will definitely leave to my betters. Rich L ----- Original Message ----- From: <caccioly@ir*.co*.br*> To: <kirvine@sa*.ne*> Cc: techdiver <techdiver@aquanaut.com> Sent: Wednesday, August 25, 1999 11:33 AM Subject: Re: [Fwd: Stiffness at depth] > This is great info! Now *this* is why I log onto these lists. > > One question, though: how can anti inflammatories help > against osmosis drawing synovial fluids out of your joints? > I'd think it can't help. The obvious conclusion would be that > you're still taking quite a beating whenever you dive deep. > > Best, > Carlos > > > > > > > kirvine@sa*.ne* on 08/23/99 22:07:24 > > Please respond to kirvine@sa*.ne* > > > > To: techdiver <techdiver@aquanaut.com> > > cc: (bcc: Carlos Accioly/Ipanema/isa) > > > > Subject: [Fwd: Stiffness at depth] > > > > > > > > Forward from Hans. > > > > Return-Path: <proverud@on*.no*> > Delivered-To: kirvine@sa*.ne* > Received: (qmail 831 invoked from network); 24 Aug 1999 00:20:24 -0000 > Received: from pilt-s.online.no (HELO online.no) (148.122.208.18) by > mail1.safari.net with SMTP; 24 Aug 1999 00:20:24 -0000 > Received: from hp (ti21a24-0099.dialup.online.no [130.67.196.227]) by > online.no (8.9.3/8.9.1) with SMTP id CAA05675 for > <kirvine@sa*.ne*>; Tue, 24 Aug 1999 02:20:34 +0200 (MET DST) > Message-Id: <4.1.19990824013227.00ab1d40@on*.no*> > Message-Id: <4.1.19990824013227.00ab1d40@on*.no*> > X-Sender: proverud@on*.no* > X-Mailer: QUALCOMM Windows Eudora Pro Version 4.1 > Date: Tue, 24 Aug 1999 02:19:57 +0200 > To: kirvine@sa*.ne* > From: Hans Petter Roverud <proverud@on*.no*> > Subject: Stiffness at depth > In-Reply-To: <37C1236E.708F@sa*.ne*> > References: <37BFEB53.2C7@sa*.ne*> > <4.2.0.58.19990822193149.0191be70@ma*.nw*.co*> > Mime-Version: 1.0 > Content-Type: text/plain; charset="us-ascii" > > > > At 06:33 AM 8/23/99 -0400, you wrote: > >Richie is talking about something else with the stiffness. What you are > >talking bout is baratrauma, and the joints get it from working under > >high pressure. > > > >We conserve our motion to reduce this, and use anti inflammatories. > > > >What we are discussing is that feeling like you get from dehydration, > >lack of potassium or hypercapnia. Anyone havae any ideas on that? > > Hi George! > > For some reason the techdiver server has been kind of funky lately. I've > tried to post several times, only to receive some error message. Still, I > get all the messages. > > Stiffness: Osmotic imbalance during rapid descents causing synovial fluid > to be drawn out of the joints. > > Reason: As ongassing occurs in fast tissues first, their osmolarity > increases. A gas load makes tissues draw water from tissues with a lesser > gas load. This is just like salt(er) water drawing water from fresh(er) > water. > > Result: Joints are temporarily going dry (drier). This leads to lack of > "lubrication" and pain. > > Eventually, as the entire body reaches / approaches saturation this osmotic > imbalance levels off. Sat divers get slight joint pain at 330' upon a fast > descent. However, after half an hour's stay at this depth they're fine > (equilibrated) and may proceed to greater depths. > > Other quips: > > On the cold water -- helium thing: > It's all about heat capacity versus heat conductance. Helium has a lower > heat capacity than air and a much higher heat conductance. Since the gas > you inhale will be heated to body core temperature anyway, a higher > conductance makes no difference. The real issue is the caloric price of > heating it (heat capacity) which is somewhat LOWER for helium than for air > / nitrox. Conductance, on the other hand, is the main issue when you use a > gas as an insulator. That's why helium is bad in a dry suit -- it doesn't > cost much to heat the helium, yet it's constantly drawing (conducting) heat > from your body to the water. > Bottom line: it's NOT colder to breathe helium than nitrox, but NEVER use > it for suit inflation! > > On counter-diffusion: > The problem is to breathe air or argox while in a helium atmosphere. Since > we do it the other way around -- breathing helium mixes in an argon (suit) > atmosphere there's no problem. > > On mitral valve defects: > The only defect that will increase the susceptibility to DCS is the one > causing blood to bypass the lung filter. The congenital left-over from > fetal circulation -- patent foramen ovale -- is the only defect that will > cause this. > > regards, > Hans > > > > > > > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]