From some research I did which I can't seem to find...

They had high success rates with prostaglsmdins combined with muscle relaxers and abx. Maybe talk to your vet about that. The study suggested an 80% survival rate with that and a 37% rate of getting pups on future breedings.

Those who have used prostaglandins like Lutalyse before know how dangerous giving them to a closed case of pyo can be. Talking ruptured uterus. Bad way to die.