New model Tracy is at home, lying on the floor, motionless. Rescuers enter without understanding what could have happened. They start examining her body with the stethoscope, she's not breathing and can't hear her pulse. They immediately begin CPR, with AMBU pouches and compressions. After several cycles the stethoscope is placed on the girl's chest, but nothing is heard. So they decide to use the AED. They uncover the girl's chest and place her plates. The first few shocks are useless and CPR must be resumed. After several more cycles it seems that Tracy begins to recover, she moves, tries to breathe, but fails. So the resuscitation maneuvers continue unceasing. Again several rounds of CPR and AMBU bagging are administered, her chest is compressed over and over again, her chest rises with each bagging, and her body is shaken by the many shocks. Eventually a soft pulse is heard by the rescuers and after a few moments the girl starts breathing and moving again, then she recovers. CPR, AED, AMBU, Defibrillator, chest compressions. Various camera angles. Topless only