[HSF] Tricuspid tissue valve dysfunction

[Tea Acuff]

the sutblety of the real world is in marked contradistinction to the gross categories we seek to assign it in our minds. this might even be true for coronary artery bypass...
thanks for your insights,
tea



----- Original Message ----
From: "Rwmfglycar at aol.com" <Rwmfglycar at aol.com>
To: OpenHeart-L at lists.hsforum.com
Sent: Friday, May 23, 2008 12:21:11 PM
Subject: Re: [HSF] Tricuspid tissue valve dysfunction

Tea,
When pericardial valves are run in an accelerated wear tester the  pe
ricardium does change. For instance after a few months a central leak  will disappear.
You are right that changes in ventricular performance, if there has been  
imperfect protection, can also influence echo results.
With stentless valves edema of the operative site clearly influenced early  
performance which improved after a while.
In the atrioventricular position one cannot invoke tissue edema as a  
mechanism for a difference in early and later results.
In truth this subject has been very poorly studied. In the early days we  had 
excellent pressure and flow data early but relatively scanty data  late.
In the Echo era there is more early and late comparative data but minimal  
validation of the data with the classical measuurement techniques.
As I said before the intrinsic variabilty of data demands caution in  
interpretation from a single observation.
Bob



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