Hypothermia, InducedHypothermiaRewarmingBody TemperatureHeart ArrestHypoxia-Ischemia, BrainMyocytes, CardiacBody Temperature RegulationCardiac OutputCirculatory Arrest, Deep Hypothermia InducedCardiopulmonary ResuscitationHeartAsphyxia NeonatorumCardiac Surgical ProceduresArrhythmias, CardiacShiveringTime FactorsOut-of-Hospital Cardiac ArrestComaDeath, Sudden, CardiacCold TemperatureHeart Arrest, InducedCardiopulmonary BypassTreatment OutcomeResuscitationBrain InjuriesRats, Sprague-DawleyDisease Models, AnimalExtracorporeal CirculationBrain IschemiaMyocardiumHypoxia, BrainHeatingBrainAsphyxiaHeart DiseasesMyocardial ContractionHeart RateCardiomegalyCardiac TamponadeCardiac Pacing, ArtificialRats, WistarHemodynamicsVentricular FibrillationIntraoperative ComplicationsCardiac CatheterizationHeart VentriclesInfant, NewbornElectrocardiographySkin TemperatureBlood PressureDogsIntracranial PressureAnesthesiaElectroencephalographyIntraoperative CareProspective StudiesTemperatureHyperthermia, InducedMyocardial InfarctionBuspironeMyoblasts, CardiacGastric HypothermiaHeart FailurePentobarbitalCerebrovascular CirculationCardiomyopathiesNeuroprotective AgentsAnimals, NewbornEmergency Medical ServicesCardiac MyosinsCardiac Imaging TechniquesDose-Response Relationship, DrugPargylineVentricular Function, LeftNear DrowningMeperidineSwineCardiac GlycosidesOxygen ConsumptionPerfusionFeverVentricular RemodelingEchocardiographyIsofluraneRetrospective StudiesMyxedemaHeart Defects, CongenitalCardiac Output, LowReperfusionMice, Inbred C57BLYawningAnesthesia, GeneralInjections, IntraventricularPostoperative ComplicationsMonitoring, PhysiologicTelemetryThiopental