I think there might be a couple of things going on here.
A cat can be born with a dormant virus, such as Feline Leukemia or Feline Aids. I'm a little surprised that your vet didn't tell you what it was and explain it to you.
As for the anesthesia, Telezol is a standard anesthesia used on cats, but the results Tucker had were completely abnormal. Telezol should keep a cat unconscious for 30-60 minutes. If Atropine is not given beforehand, there could be a prolonged recovery and pulmanary edema.
My guess now, and I don't feel like I know all the facts, is that the vet who gave Tucker the anesthesia wasn't aware of the dormant virus, and also didn't monitor Tucker properly. He never should have let him leave in that condition.
I think Tucker's dormant virus was activated by the anesthesia. He either didn't tolerate it well or the amount they gave him was a little too high, but that certainly coincides with when he started having problems.
I don't think your vet has done a very good job explaining this to you, and the least you deserve is an explanation of what he thinks happened to your cat specifically, not in just vague terms. If he can't do that, if you can find out the name of the virus and the dosage of Telazol and any other drugs he was given, I'll try to give you a better idea of what happened.
I hope this helps.


