"We are suspending life, but we don't like to call it suspended animation because it sounds like science fiction," Doctor Samuel Tisherman, the surgeon who will lead the trial, told New Scientist. "So we call it emergency preservation and resuscitation.
Doctors Are About to Start Human Trials for Suspended Animation http://gizmodo.com/surgeons-are-about-to-start-human-trials-for-suspended-1552062924 To do so, doctors replace all of the patients' blood with a cold saline solution. In this state, the patient has no signs of life—no pulse, no brain activity, nothing. He's clinically dead, until the doctors resuscitate his by pumping blood back into his body and bringing the body temperature back up.