CPR, known colloquially as "the Kiss of Life," (TV: The Curse of the Black Spot) was a medical technique used on humans. It also worked on Time Lords. With Time Lords, however, given their binary vascular system, CPR had to be performed on both hearts. (TV: Smith and Jones) CPR was seen often in films. (TV: The Curse of the Black Spot)
In 1699, Amy Pond used CPR to revive Rory Williams from near drowning, the effects of which he began to suffer after she released him from the medical care of the Siren. (TV: The Curse of the Black Spot)
When Henry Parker was dying of a heart attack, Owen Harper attempted to perform CPR on him, before realising that he was not capable as he now lacked breath. (TV: A Day in the Death, Dead Man Walking)
Behind the scenes Edit
In the real world, a provider of CPR uses chest compression and rescue breathing to continue blood flow, which provides oxygen to body tissues even if the heart and lungs have stopped. This allows time for advanced medical treatment.
Events in the DWU seem to imply that CPR is restorative. However, in the real world, this is a last chance technique. Further medical attention is required and, even then, it is frequently unsuccessful.