I am so terribly sorry to hear that this is the outcome.
Unfortunately, Pyometra is a very very serious illness, and of course there are many dogs who don't make it through. I am sure your vet did their best. But toxins can overwhelm the system entirely, and if the kidneys fail -there is a poor prognosis.
I am sorry, and feel for you.
Thanks for replying and sharing about ur pet. Our pet is no more, she passed away last evening.
Why has the vet held back with her surgery? Does he feel she is not strong enough yet for it?
Surgery is definitely the best solution as pyometra can be a great strain on the whole system, as toxins from the infected womb enter the bloodstream, and put great strain on the kidneys. If your vet is waiting to see how she does with her general condition first before surgery, that could explain the delay. No doubt he has run bloodwork to assess her kidney function, and the condition of her other organs?
A dog on IV fluids probably wouldn't feel the desire to drink much. Mine didn't. The lack of appetite, likewise is understandable, as she must feel rotten.
If in your vet's opinion she is stable enough for surgery, then do not waste any more time, and get the surgery scheduled as soon as possible. Yes, there are always risks, but she is in a worse position like this.
All I can tell you to give you some hope is that my dog was just fine after her surgery. And my dog is going on 13. I heard also, of two other cases (people I know) whose girls had pyometra surgery at age 14 and 12....and they went through just fine too.
So good luck. Please post back, if you get time, and let us know how she's doing.