Hi Alley,
I hope Henry doesn't have a liver shunt. I posted this link after your other question on the other thread, but I'll post it here, too. There is lots of info available at different links on the bottom:
http://tsfannymaelivershuntfund.home...m/Gazette.html
Also, you can do a search of this site using the "search" button on the blue bar above the threads. Just type in "liver shunt" and you will find a lot. You can also google "liver shunt" for lots of info.