Residual VolumeTotal Lung CapacityLung Volume MeasurementsFunctional Residual CapacityPlethysmographyVital CapacityPulmonary EmphysemaRespiratory Function TestsForced Expiratory VolumeLungPlethysmography, Whole BodyRespiratory AspirationGallbladder EmptyingSpirometryRespiratory MechanicsBlood VolumePulmonary Diffusing CapacityUrodynamicsEnteral NutritionUrinationGastric EmptyingIntubation, GastrointestinalLung ComplianceNeoplasm, ResidualUrinary RetentionPneumonectomyExpiratory Reserve VolumeInhalationBronchoconstrictor AgentsGastrointestinal ContentsUrinary BladderEmphysemaVenous InsufficiencyDiaphragmUrinary Bladder DiseasesPressureMaximal Expiratory Flow RateRespiratory MusclesDyspneaPulmonary Disease, Chronic ObstructiveHeliumUrination DisordersLung Diseases, ObstructivePulmonary VentilationTime FactorsRespiratory Physiological PhenomenaForced Expiratory Flow RatesAirway ResistanceMethacholine ChlorideTreatment OutcomeUrinary Bladder Neck ObstructionProspective StudiesAirway ObstructionProstatic HyperplasiaRespirationTomography, X-Ray ComputedPlasma VolumeUrethraCritical IllnessBronchodilator AgentsStroke VolumeNebulizers and VaporizersBronchoscopyFollow-Up StudiesReproducibility of ResultsAerosolsStatistics, NonparametricRespiration, ArtificialReference ValuesSeverity of Illness IndexAsthmaErythrocyte VolumeLung DiseasesAdministration, InhalationAnalysis of VarianceRetrospective StudiesBlood Volume DeterminationMagnetic Resonance ImagingCross-Over StudiesOxygenDouble-Blind MethodExercise TestChronic DiseaseImaging, Three-DimensionalSmokingOrgan Size