AlbuterolBronchodilator AgentsNebulizers and VaporizersIpratropiumAdrenergic beta-2 Receptor AgonistsAdministration, InhalationInhalation SpacersRacepinephrineMetered Dose InhalersAdrenergic beta-AgonistsBronchial SpasmOzone DepletionAsthmaChlorofluorocarbonsAerosol PropellantsBronchoconstrictionRespiratory Therapy Department, HospitalAerosolsBronchiolitisForced Expiratory VolumeDrug IncompatibilityForced Expiratory Flow RatesAnti-Asthmatic AgentsReceptors, Adrenergic, beta-2Equipment DesignBeclomethasoneDouble-Blind MethodMasksModels, AnatomicPulmonary Disease, Chronic ObstructiveMyasthenic Syndromes, CongenitalAirway ResistanceRespiratory TherapyEquipment SafetyBronchial Provocation TestsStereoisomerismManikinsRespiratory Function TestsTreatment OutcomePropanolaminesBudesonideIntubation, IntratrachealDrug CombinationsTime FactorsHydrocarbons, FluorinatedPeak Expiratory Flow RateMissouriRespiration, ArtificialAndrostadienesDrug Administration ScheduleGlucocorticoidsPlethysmographyRespiratory SoundsSpirometryLungAdrenal Cortex HormonesAnesthesia, InhalationRespiratory MechanicsTracheaBronchiVital CapacityDrug Therapy, CombinationEmergency Service, HospitalEstrenes