Re: TTS and sepstostomy

From: rbraun@indyunix.iupui.edu
Thu Oct 31 05:50:18 1996


If the increased pressure in the poly sac has an effect, then why is the poly twin usually the one with the highest HCT.? In the case of my granddaughters the poly twin had a HCT of 92%

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ R. Daniel Braun, MD FACOG "Money will buy you a fine dog Clinical Professor OB/GYN but only love will make it Indiana University School of Medicine wag its tail" Indianapolis, IN Richard "Kinky" OBGYN.net, International Rep. U.S. Friedman Kinky Friedman for President @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

On Thu, 31 Oct 1996, Kenneth J. Moise wrote:

>
> Dan Braun asked how this septostomy thing workds for TTS.
>
> The answer is : we don't know.
>
> What we believe is that something starts the cascade of inappropriate
> sharing of the placenta vasculature (perhaps a viral infection in one of
> the twins). This leads to the poly/oligo sequence which may worsen the
> shunt through the increased amniotic fluid pressure in the poly sac. We
> have conjectured that the increased pressure is somehow transmitted to
> the placental vasculature. George Saade has pointed out that
> monoamniotic twins (with one amniotic cavity and many "shared placental
> vessels" ) don't get TTS.
>
> The answers are yet forthcoming on what is the pathophysiology of this
> syndrome.
>
> Ken Moise
> Baylor College of Medicine
>





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