AlbuterolNebulizers and VaporizersBronchodilator AgentsAdministration, InhalationAerosolsIpratropiumInhalation SpacersMetered Dose InhalersAdrenergic beta-2 Receptor AgonistsAdrenergic beta-AgonistsRacepinephrineAsthmaChlorofluorocarbonsBronchial SpasmAerosol PropellantsEquipment DesignOzone DepletionRespiratory TherapyMasksBronchoconstrictionForced Expiratory VolumeDrug IncompatibilityModels, AnatomicAnti-Asthmatic AgentsRespiratory Therapy Department, HospitalBronchial Provocation TestsBronchiolitisForced Expiratory Flow RatesParticle SizeManikinsReceptors, Adrenergic, beta-2Double-Blind MethodBudesonideDrug Delivery SystemsPulmonary Disease, Chronic ObstructiveBeclomethasoneRespiratory Function TestsAirway ResistanceRespiration, ArtificialPeak Expiratory Flow RateMyasthenic Syndromes, CongenitalLungIntubation, IntratrachealEquipment SafetyStereoisomerismRespiratory MechanicsDisposable EquipmentSpirometryTreatment OutcomeCystic FibrosisCromolyn SodiumDrug Administration ScheduleTerbutalineEquipment ReuseCross-Over StudiesPropanolaminesGlucocorticoidsTechnetium Tc 99m PentetatePediatricsEquipment and Supplies, HospitalSaline Solution, HypertonicHydrocarbons, FluorinatedAtropine DerivativesVital CapacityTobramycinDrug CombinationsMissouriBronchiMaterials TestingPentamidineNasal SpraysAndrostadienesUltrasonicsColistinEmergency Service, HospitalPlethysmographyProcaterolRespiratory SoundsLung Diseases, ObstructiveRespiratory System AgentsAnesthesia, InhalationAdrenal Cortex HormonesDisinfectionTracheaSodium Fluoride