Hypothermia, InducedHypothermiaHeart ArrestHypoxia-Ischemia, BrainOut-of-Hospital Cardiac ArrestCardiopulmonary ResuscitationRewarmingAsphyxia NeonatorumBody TemperatureComaResuscitationBrain InjuriesShiveringTreatment OutcomeEmergency Medical ServicesBody Temperature RegulationInfant, NewbornVentricular FibrillationDrowningElectroencephalographyIntensive Care Units, PediatricCritical CareIntensive CareIntracranial PressureNervous System DiseasesBrain DiseasesTime FactorsHospitals, PediatricNeurologic ExaminationCA1 Region, HippocampalRetrospective StudiesClinical ProtocolsSeizuresMonitoring, PhysiologicFeasibility StudiesBrainBrain IschemiaPennsylvaniaDisease Models, AnimalProspective StudiesPrognosisIntensive Care UnitsGermanySurvivorsCirculatory Arrest, Deep Hypothermia InducedSurvival AnalysisCohort StudiesRandomized Controlled Trials as TopicElectrocardiographySeverity of Illness Index