Nebulizers and VaporizersAlbuterolAerosolsBronchodilator AgentsAdministration, InhalationIpratropiumMetered Dose InhalersInhalation SpacersAsthmaEquipment DesignAdrenergic beta-AgonistsAdrenergic beta-2 Receptor AgonistsChlorofluorocarbonsRacepinephrineRespiratory TherapyMasksAerosol PropellantsBronchial SpasmModels, AnatomicOzone DepletionParticle SizeForced Expiratory VolumeBronchial Provocation TestsDrug IncompatibilityBronchoconstrictionDrug Delivery SystemsAnti-Asthmatic AgentsManikinsBudesonideRespiratory Therapy Department, HospitalDisposable EquipmentCystic FibrosisCromolyn SodiumTerbutalineEquipment ReuseDouble-Blind MethodBronchiolitisTechnetium Tc 99m PentetatePulmonary Disease, Chronic ObstructiveRespiratory Function TestsRespiration, ArtificialEquipment and Supplies, HospitalLungSaline Solution, HypertonicForced Expiratory Flow RatesAtropine DerivativesTobramycinPeak Expiratory Flow RateReceptors, Adrenergic, beta-2PentamidineAirway ResistanceNasal SpraysUltrasonicsColistinBeclomethasoneIntubation, IntratrachealProcaterolCross-Over StudiesRespiratory MechanicsLung Diseases, ObstructiveRespiratory System AgentsDisinfectionSpirometrySodium FluorideDrug Administration SchedulePediatricsMyasthenic Syndromes, CongenitalTreatment OutcomeEquipment SafetyDry Powder InhalersStereoisomerismGlucocorticoidsMaterials TestingVital CapacityChlorobutanolExpectorantsBronchiBenzalkonium CompoundsPowdersHumidityEmergency Service, HospitalTechnetiumPropanolaminesPreservatives, PharmaceuticalFlame IonizationHydrocarbons, FluorinatedDrug CombinationsMissouriStatistics, NonparametricPilot ProjectsMethacholine ChlorideDecontaminationAndrostadienesDose-Response Relationship, DrugBlood Gas Monitoring, TranscutaneousDrug MonitoringVentilators, MechanicalAcute DiseasePlethysmographyFacial Dermatoses