Tammy go and join
http://pets.groups.yahoo.com/group/L...d_MVD_Support/
I feel like Im preaching about this group I post it so often for dogs who have LS and who suspect LS. They can point you in the right direction. University or Tenn is the best place to take your yorkie for surgery to fix the shunt.
Join that group and any question you have they can help you. Alot of LS knowledge on that group