AlbuterolTabletsBronchodilator AgentsTablets, Enteric-CoatedNebulizers and VaporizersIpratropiumAdrenergic beta-2 Receptor AgonistsAdministration, InhalationInhalation SpacersRacepinephrineMetered Dose InhalersAdrenergic beta-AgonistsChemistry, PharmaceuticalExcipientsBronchial SpasmDrug CompoundingOzone DepletionAsthmaDelayed-Action PreparationsChlorofluorocarbonsAerosol PropellantsTechnology, PharmaceuticalMethylcelluloseBronchoconstrictionRespiratory Therapy Department, HospitalPowdersDrug IncompatibilityAerosolsBronchiolitisDouble-Blind MethodForced Expiratory VolumeSolubilityAnti-Asthmatic AgentsForced Expiratory Flow RatesEquipment DesignReceptors, Adrenergic, beta-2HardnessDrug CombinationsBeclomethasoneMasksAdministration, OralModels, AnatomicLubricantsDosage FormsTherapeutic EquivalencyCapsulesMyasthenic Syndromes, CongenitalPulmonary Disease, Chronic ObstructiveAirway ResistanceRespiratory TherapyEquipment SafetyStereoisomerismCross-Over StudiesBronchial Provocation TestsCellulosePovidoneManikinsDrug StabilityBiological AvailabilityTreatment OutcomeHardness TestsAdministration, BuccalRespiratory Function TestsPropanolaminesDrug Administration ScheduleDrug Delivery SystemsParticle SizeBudesonideIntubation, IntratrachealHydrocarbons, FluorinatedCompressive StrengthMissouriPeak Expiratory Flow RateCarboxymethylcellulose SodiumSuspensionsAndrostadienesDrug Therapy, CombinationPlacebosGlucocorticoidsPolymethacrylic AcidsRespiration, ArtificialPlethysmographyPharmaceutic AidsRespiratory SoundsAdministration, SublingualSpirometryMaterials TestingTime FactorsAnesthesia, InhalationRespiratory MechanicsAdrenal Cortex HormonesBronchiTracheaAcetaminophenPorosityVital CapacityDrug StorageLungDrug PackagingEstrenes