If you believe in such a thing (which I do not,) well... The answer is in the name.
The "immortal soul." Suspended animation is much like sleeping. You're not dead, so your soul will not leave your body. Your body could live a million years, but that's less than a blink, in Heavenly terms. Your soul, being "immortal" has no concept of time. Whether you die at birth, or live to be as old as our Universe, your soul will never wither, never die - It's immortal - It's perfect - It will always be ready, when your body lets go, to enter Heaven.
... That's my take on it, anyway, as a non-believer in fairy tales about magicians, invisible men, ghosts, zombies 'n' the like.
