liver shunt is not a death sentence your baby will be ok - was the ALT high on blood work done is that why they are running bats?
Let us know the bat results if over 100 most likely a shunt - how far are you from university of tennessee as dr tobias is best surgeon for this and dr centers is best internal medicine for this and she is at cornell university but does phone consults - here is some info on liver shunt for you to read up on
join these two groups
Liver_Shunt_And_MVD_Support : Liver Shunt & MVD/HMD Support DogLiverDisease : Dog Liver Disease
this is some info to read
Portosystemic Shunt (Hepatic Shunt) in Dogs Hepatic Encephalopathy in Dogs Structure and Function of the Liver in Dogs