Hypothermia, InducedHypothermiaRewarmingBody TemperatureHypoxia-Ischemia, BrainHeart ArrestBody Temperature RegulationCirculatory Arrest, Deep Hypothermia InducedAsphyxia NeonatorumShiveringCardiopulmonary ResuscitationComaCold TemperatureHeart Arrest, InducedBrain InjuriesTime FactorsBrain IschemiaOut-of-Hospital Cardiac ArrestHeatingCardiopulmonary BypassHypoxia, BrainExtracorporeal CirculationResuscitationBrainAsphyxiaSkin TemperatureTreatment OutcomeRats, Sprague-DawleyDisease Models, AnimalIntracranial PressureIntraoperative ComplicationsInfant, NewbornBuspironeElectroencephalographyHyperthermia, InducedGastric HypothermiaTemperatureNeuroprotective AgentsPentobarbitalPargylineCerebrovascular CirculationMeperidineIntraoperative CareVentricular FibrillationNear DrowningRats, WistarAnesthesiaFeverMyxedemaYawning