[HSF] Indications for maze with mitral surgery

[Prasanna Simha M]

Crista refers to Crista Terminalis.
The 3 cm was derived from the work of Allesae and Moe which Cox
expaneded upon. 3 Cm is the value derived form atrial conduction
velocity and EP studies. It is in Cox's review of the maze procedure
in the Advances in Cardiac surgery (I think 7th Edition) .One of the
reasons for early Afib post cardiac surgery is due to alteration  of
the velocity of conduction due to CPB.
A wave velocity above 40 cms/ sec represents a fully functional LA
(Normal). Less than 10 cms is an ineffective contraction. You would
have to look through Feigenbaum's Echo text book for the normal values
etc.
Prasanna



On Mon, Mar 3, 2008 at 11:05 PM, erdinç naseri <enaseri at hotmail.com.tr> wrote:
>
>  Prasanna,
>  1.What is cristae Svc( c.terminalis?)
>  2.What is the origin of 3 cm in LA fibrilation loop? Does it have something with the speed of propagation of the wave in atrial tissue?
>  3.how do you interpret a wave velocity into success of fibrilation surgery ?What is the lower limit of  "a "wave  velocity in order for atria to be  considered as nonejecting pump.(i.e Electrical success and mechanical failure)
>  4.Can I have the source litterature?
>  erdinc
>
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-- 
Prasanna Simha M