Bring Dead People back Alive again

Do you think we'd have the technology to bring people who have been clinically dead for at most a week back alive again?  I doubt we'd see this technology in our lifetimes so we won't be able to benefit from it but say in 100,000 years at the current rate medical research is progressing?

didn't someone do that with dogs or something a while back?

I think they had to drain the blood first and then put it back in later though