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Date: Tue, 26 Sep 1995 19:34:53 -0600
To: techdiver@terra.net
From: chris@ab*.co* (Christopher M. Parrett)
Subject: Re: DCS and injury sites
>> So the pairing of theoretical compartment times with actual tissues is
>> bad science?  I can understand it, but it would seem to violate
>> the entire notion of 'scar tissue' having a longer half time.  How do I
>> reconcile this?
>
>Do what I do -- just assume you're more likely to get hit, so be more 
>conservative about decompression stops (this applies to everyone - 
>whether or not you have any scar tissue).  And don't forget to add those 
>deep safety stops! Liability concerns will probably restrict the ability 
>for people to put models out there to be followed for deep-stop profiles, 
>so for the time being, just wing it: 1-2 minutes at half the distance 
>between your bottom and your first "required" deco stop -- on no-deco 
>dives, this would be half the depth -- and 1-2 minutes at half the 
>distance between that depth an the first deco stop.  On really deep 
>bounce dives (where the distance between bottom and first deco stop is on 
>the order of 150-200 feet), change it to 2/3 instead of 1/2, and add a 
>third one.  Also, keep the ascent rate slow between stops no matter how 
>deep you are. If you get bent, don't sue me because it's your own damn 
>fault for diving in the first place.  If you don't get bent, send me 
>monetary gifts for your appreciation.
>
>Aloha,
>Rich
>--

Interesting point Rich.
This same comment was made to me by George a couple of weeks ago.
After giving it a far amount of thought I have decided to add a "Deep Stop"
option to the decompression defaults that will instruct Abyss to create a
series of 1-2 minute stops prior to the first model mandated deco stop.



Christopher M. Parrett, President, Abysmal Diving Inc.
Makers of ABYSS, Advanced Dive Planning Software.
6595 Odell Place, Suite G. Boulder CO, 80301
Ph, 303-530-7248, Fx, 303-530-2808
ftp://abysmal.com/users/abysmal http://www.emi.net/boynton/abyss/abyss.html

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