Two nurses moved instantly, wheeling over the defibrillator. The anesthesiologist adjusted the oxygen levels again, his hands trembling slightly.

"Start chest compressions now!"

A doctor leaned over Aiden, pressing hard against his chest in quick, steady thrusts while another checked the IV lines, but was careful not to press on the operated spot.

"Charge the defibrillator!" the lead surgeon ordered.

"But doctor..." the younger nurse hesitated. "His heart was transplanted barely ...