
Agree with Jeangenie. I once had a vet that wanted to give oxytocin BEFORE a bitch was fully dilated. This can cause rupture to the uterus. I refused. :-(
Even if a pup has not been born, oxytocin is fine if fully dilated. I think the reason that people are told it is after a pup is born, is because the average person would not know if a bitch had reached that stage.
I have to say though, I never go back home after oxytocin. I prefer to be near an operating theatre! I have had oxytocin work, and they have let me have a room to deliver my pups in.
But I have also had a bitch that, after two injections, didn't start labour. I asked for an ultra sound, saw a heartbeat, and asked them to go in right away. My girl had been hanging around long enough. Although, I have to admit that I never let a bitch have 2 sections. If they need one, they are spayed afterwards, as I don't want the risk again.