Thank you, Pinot's Mom and Ellie. It's been a hard day for me. And a harder one for poor Gatsby, of course.
The two vets talked, and the ER vet says they're pretty much on the same page. Haven't talked with my regular vet yet. Gatsby is on an antispasmodic med in addition to antibiotics and will stay hospitalized over the weekend. They hope to have the results of a urine culture Monday to see whether staph is still a problem.
I'll wait to find out what my regular vet has to say before I decide whether to set up an appointment at the university. If my vet thinks there's some chance that it could work, I'm inclined to go ahead with the surgery without a third opinion. We're pretty much out of other options.