HyperoxiaTreatment OutcomeOxygenOutcome Assessment (Health Care)Pregnancy OutcomePulmonary AlveoliHyperbaric OxygenationLungTime FactorsRetrospective StudiesAnimals, NewbornAnoxiaFollow-Up StudiesOutcome and Process Assessment (Health Care)Partial PressureProspective StudiesCarotid BodyInfant, NewbornBronchopulmonary DysplasiaPrognosisLung InjuryChemoreceptor CellsRetinal VesselsIon-Selective ElectrodesPregnancyRetinopathy of PrematurityRisk FactorsPneumocytesCarbon DioxideOxygen Inhalation TherapyOxygen ConsumptionMicroscopy, Electrochemical, ScanningBlood Gas AnalysisRats, Sprague-DawleyCohort StudiesSurvival AnalysisHypercapniaRespirationSeverity of Illness IndexSurvival RateRespiratory MechanicsAirOxidative StressPredictive Value of TestsDisease Models, AnimalPostoperative ComplicationsGlasgow Outcome ScalePulmonary Surfactant-Associated Protein C