At the end of the movie, Robert takes unconscious Amy out of the hospital. The cardiac monitor shows absence of cardiac electrical activity, i.e. asystole. Asystole is a type of cardiac arrest classified as "non shockable rhythm" and its initial management exclude the use of defibrillation. They should have started cardiopulmonary resuscitation (CPR) maneuvers instead. Furthermore, when an electrical shock is delivered, a typical waveform should have appeared in the monitor.