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[IP] Scar Tissue Research ???? (was : Scar Tissue from 3+ Sites)?



Hi Everyone,

I'm wondering if there is any research documentation about these issues :
Scar tissue more prevalent after 2 days ?
Metal vs teflon cannulas ?
thanks,

Janette
----- Original Message -----
From: "Shawna" <email @ redacted>
To: "Insulin Pumpers" <email @ redacted>
Sent: Thursday, March 27, 2003 12:51 AM
Subject: [IP] Re: Scar Tissue from 3+ Sites?


> I have no idea or knowledge about metal vs. plastic material causing scar
> tissue in your body. What does make sense to me is the second point which
> states, "2) Insertion of an infusion set means a lesion to the body. A
cascade
> of biochemical processes is started to finally heal this injury. At day
3-5,
> formation of internal scar tissue starts, if something is left in the
body, or
> -as for infusion sets- in the skin."
>
>  To me, the timeline is what's critical here, regardless of the material
(day
> 3-5). His last point is that the plastic cannulas tempt us to leave them
in
> longer because of their comfort. Some people have written that they leave
them
> in for 4 days to a week or more. As far as recommendations for site
changes go,
> MiniMed actually recommends they be changed every 2 days, not 3, but
people tend
> to ignore this as 3 days seems to be an acceptable amount of time. Someone
once
> posted they thought this was a recommendation so MM could sell more
infusion
> sets, but maybe there's actually a good reason behind it.
>
>  I currently change my sites every 3 days and thought I would experiment
and see
> if every 2 days made a difference, since day 3 seems to be the magic
number
> where scar tissue begins to form. Since everyone is different, I won't
know
> until I try it out for myself.
>
> Shawna
>
>
>
> --------------------------------------------------------------------------
---------------------------------------------------
>
> <This didn't make sense to me the first time it was posted, and still
doesn't
> make sense to me now.  I may well be wrong about this, and if I am, I hope
> someone will explain how.
>
> The reason why I don't understand why this would be true is that as long
as
> I've pumped, I've been told you should change your site more frequently if
> you use metal.  I believe it is recommended that the site be changed every
> two days with metal needles, as opposed to every three with plastic
> cannulas.
>
> If the above is correct, then why aren't we given guidelines that are the
> reverse of what they are?  Please enlighten me.  Until I am enlightened,
> however, I am content to continue changing out every three days or so.  I
> haven't seen any sign of scar tissue yet in twelve and a half years of
> pumping.  And for much of that time, I changed out every four days instead
> of every three!
>
> Kristen>
>
>
> --------------------------------------------------------------------------
---------------------------------------------------
>
> <Red spots or scar tissue formation are mainly dependent on two factors:
>
> 1) kind of material which is brought into the body
> 2) duration of the presence of this material
>
>  1) Plastic materials (soft cannulas) do promote scar tissue formation
more than
> do steel cannulas. This is due to the surface constitution of this
material.
> This is one reason why in surgery for long-term implants usually metal or
> ceramic ones are being used. (High-tech plastics are also applied!) With
breast
> implants, encapsulation is sometimes a problem, because the body builds up
a
> barrier versus the plastic material. To a smaller extend, this is also
true for
> soft cannulas.
>
>  2) Insertion of an infusion set means a lesion to the body. A cascade of
> biochemical processes is started to finally heal this injury. At day 3-5,
> formation of internal scar tissue starts, if something is left in the
body, or
> -as for infusion sets- in the skin.
>
>  As soft sets tempt us to use them quite long and because of their
material,
> they promote scar tissue formation and red spots versus steel needles.
That's
> why I resist the temptation to use soft sets and stay very happy with
> my rapid d!>
> ----------------------------------------------------------
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> HELP@insulin-pumpers.org
----------------------------------------------------------
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