HypercapniaHyperoxiaCarbon DioxideOxygenAnoxiaChemoreceptor CellsRespirationPartial PressureHypocapniaPulmonary VentilationAcidosis, RespiratoryRespiratory MechanicsCarotid BodyBlood Gas AnalysisCerebrovascular CirculationApneaAnimals, NewbornTidal VolumePulmonary AlveoliLungAcidosisHyperventilationHyperbaric OxygenationAsphyxiaOxygen ConsumptionAcid-Base EquilibriumRats, Sprague-DawleyIon-Selective ElectrodesLung InjuryPhrenic NervePia MaterPlethysmography, Whole BodyHydrogen-Ion ConcentrationOxygen Inhalation TherapySodium CyanideRespiration, ArtificialAirRetinal VesselsBlood Flow VelocityRespiratory Physiological PhenomenaHypoventilationBlood PressureOximetryRespiratory CenterRespiratory MusclesHeart RateDiaphragmAcetazolamideBronchopulmonary DysplasiaCarbonic Anhydrase InhibitorsLaser-Doppler FlowmetryPulmonary Gas ExchangeTime FactorsRegional Blood FlowCerebral ArteriesRespiratory InsufficiencyIntercostal MusclesRetinopathy of PrematurityMedulla OblongataRespiratory Function TestsPneumocytesInhalationReflexCatsInsufflationRespiratory Distress Syndrome, AdultBicarbonatesMicroscopy, Electrochemical, ScanningPulmonary CirculationBrainDoxapramBrain StemPulmonary EdemaDisease Models, AnimalVasodilationObesity Hypoventilation SyndromeAcute Lung InjuryArteriolesPulmonary Stretch ReceptorsHemodynamicsMiddle Cerebral ArteryVasoconstrictionWakefulnessVascular ResistanceGasesVagotomyDogs