Cardiopulmonary ResuscitationPediatric Nurse PractitionersHeart ArrestResuscitationHeart MassageCardiopulmonary BypassResuscitation OrdersDefibrillatorsOut-of-Hospital Cardiac ArrestEmergency Medical ServicesManikinsVentricular FibrillationMedical FutilityElectric CountershockAdvanced Cardiac Life SupportFirst AidLife Support CareEmergency Medical TechniciansVisitors to PatientsHypothermia, InducedShock, HemorrhagicAsphyxiaCompact DisksExtracorporeal Membrane OxygenationAdvance DirectivesTime FactorsBlood CirculationWithholding TreatmentAmerican Heart AssociationTreatment OutcomeSwineFluid TherapyProspective StudiesEmergency TreatmentDramaRib FracturesEmergency Medical Service Communication SystemsEpinephrineJudaismDelivery RoomsSurvival Rate