AlbuterolBronchodilator AgentsNebulizers and VaporizersAdministration, InhalationIpratropiumAdrenergic beta-2 Receptor AgonistsInhalation SpacersRacepinephrineMetered Dose InhalersAdrenergic beta-AgonistsBronchial SpasmOzone DepletionAsthmaChlorofluorocarbonsAerosol PropellantsBronchoconstrictionRespiratory Therapy Department, HospitalAerosolsForced Expiratory VolumeBronchiolitisDouble-Blind MethodAnti-Asthmatic AgentsDrug IncompatibilityEquipment DesignForced Expiratory Flow RatesReceptors, Adrenergic, beta-2BeclomethasoneTreatment OutcomeMasksDrug Administration ScheduleModels, AnatomicPulmonary Disease, Chronic ObstructiveAirway ResistanceRespiratory TherapyMyasthenic Syndromes, CongenitalBronchial Provocation TestsStereoisomerismEquipment SafetyManikinsDrug CombinationsRespiratory Function TestsPropanolaminesTime FactorsBudesonideDrug Therapy, CombinationIntubation, IntratrachealHydrocarbons, FluorinatedGlucocorticoidsPeak Expiratory Flow RateAndrostadienesMissouriAdrenal Cortex HormonesLungRespiration, ArtificialLethal Dose 50Radiation DosageRespiratory SoundsPlethysmographySpirometryBronchiAnesthesia, InhalationPlacebosTracheaRespiratory MechanicsAdministration, OralDrug Delivery SystemsVital CapacityPyrrolidinonesEstrenesReceptors, Adrenergic, beta