Respiratory InsufficiencyNeuromuscular DiseasesLung Diseases, ObstructiveDoxapramBulbar Palsy, ProgressiveHypercapniaAdrenal InsufficiencyTracheostomyRespiration, ArtificialIntermittent Positive-Pressure VentilationPhrenic NerveFatal OutcomePartial PressureBlood Gas AnalysisRenal InsufficiencyVenous InsufficiencyOxygen Inhalation TherapyChronic DiseasePositive-Pressure RespirationQuadriplegiaExocrine Pancreatic InsufficiencyDiaphragmLung DiseasesPlacental InsufficiencyOxygenRespirationRespiratory Function TestsInfant, NewbornAnoxiaCarbon DioxideLungTreatment OutcomePostoperative ComplicationsTime FactorsRetrospective StudiesFollow-Up StudiesPrimary Ovarian InsufficiencyHepatic InsufficiencyAddison DiseaseAortic Valve InsufficiencyVelopharyngeal InsufficiencyVitamin D DeficiencyVaricose UlcerMitral Valve InsufficiencyOrthopticsRenal Insufficiency, ChronicEncyclopedias as TopicPulmonary Gas ExchangeLaryngeal MasksIntubation, IntratrachealBrain InjuriesMedlinePlusVentilation-Perfusion Ratio