Barbara, I sure hope that the meds will help Tigris so you won't even have to think about surgery. Yes, everyone I spoke with informed me about the risks of both Cirrus and Storm developing UTI infections after their operations. This is another reason why I'm keeping them on their special diet. So far so good. Cirrus had his operation last Feb. so it's almost been a year and he's doing very well.
In Storm's case he had to have surgery because of scar tissue and he became blocked twice. The scar tissue prevented him from being able to be catheterized. His surgeon told me that she's seen many cats that have been catheterized so many times that they develop very bad scar tissue. Then when they finally have the surgery, the scar tissue grows back and they become blocked again. In Storm's case this shouldn't happen because we caught it early.

Tigris,please be a good kitty and take all of your meds and get well soon.