Board Thread:Theories and Speculation/@comment-26005711-20150719134117/@comment-734582-20150722144542

Ravenlot 27 wrote: Correction: it's called "Clinical death". But it isn't the same thing as "Biological death". Body is dying, there's no heartbeat/breathing, however, it doesn't mean person will be resurrected if they doesn't actually die. Person can be considered as an resurrected one, if they will come back to life after the biological death. True. Besides, you're not officially dead until the doctor calls it. Death is a pretty vague thing, because people have been declared dead before and awoke later. It's rare, but it happens.

As long as Sakura properly massaged Naruto's heart and properly gave him air, she can technically sustain him nigh-indefinitely. As long as the brain's not too long without oxygen, you can survive unscathed. Naruto got his beasty back which stopped him from dying.