AlbuterolBronchodilator AgentsNebulizers and VaporizersAdministration, InhalationIpratropiumAdrenergic beta-2 Receptor AgonistsInhalation SpacersRacepinephrineMetered Dose InhalersAdrenergic beta-AgonistsBronchial SpasmOzone DepletionAsthmaChlorofluorocarbonsAerosol PropellantsBronchoconstrictionTime FactorsAerosolsRespiratory Therapy Department, HospitalDouble-Blind MethodTreatment OutcomeForced Expiratory VolumeBronchiolitisEquipment DesignAnti-Asthmatic AgentsDrug IncompatibilityForced Expiratory Flow RatesReceptors, Adrenergic, beta-2Drug Administration ScheduleBeclomethasoneMasksModels, AnatomicPulmonary Disease, Chronic ObstructiveAirway ResistanceRespiratory TherapyBronchial Provocation TestsStereoisomerismEquipment SafetyMyasthenic Syndromes, CongenitalDrug CombinationsRespiratory Function TestsManikinsDrug Therapy, CombinationBudesonidePropanolaminesIntubation, IntratrachealGlucocorticoidsPeak Expiratory Flow RateHydrocarbons, FluorinatedRespiration, ArtificialAdrenal Cortex HormonesAndrostadienesLungMissouriAdministration, OralRadiation DosageSeverity of Illness IndexPlacebosLethal Dose 50Respiratory SoundsPlethysmographyDose-Response Relationship, DrugSpirometryRespiratory MechanicsAnesthesia, InhalationTracheaBronchiVital CapacityDrug Delivery SystemsProspective StudiesPyrrolidinonesDisease Models, AnimalAcute DiseaseRetrospective StudiesEstrenesReceptors, Adrenergic, betaStatistics, NonparametricModels, BiologicalPediatricsRadiometryEmergency Service, HospitalFollow-Up StudiesPilot Projects