This article has some very disturbing elements but it shares some of the most recent research into physical, biological death and technologies that may help extend or restore life.
A Groundbreaking Scientific Discovery Shows That We Can Reverse Death
I find the anecdote with the pigs to be disturbing but it does suggest that some old science fiction/horror stories may have foreshadowed something more than fantasy. So where would this latest research lead writers to take their characters? It's hard to beat classics like "Re-animator" and
Frankenstein (among others).
Maybe new stories would focus more on the ethics of dealing with a population of resurrected dead people. What would their rights be? Would they be welcomed back by society? Would they be recognized as their old selves? They might need new bodies. Victims of serious disasters might have to be resurrected and then asked if they want to return to life.
New patient communication systems may have to be devised to interact with them. We've got experimental technology that reads brain waves and translates them into words on computers.