AlbuterolBronchodilator AgentsNebulizers and VaporizersReview Literature as TopicAdministration, InhalationIpratropiumAdrenergic beta-2 Receptor AgonistsRandomized Controlled Trials as TopicInhalation SpacersRacepinephrineAdrenergic beta-AgonistsMetered Dose InhalersBronchial SpasmOzone DepletionAsthmaMeta-Analysis as TopicChlorofluorocarbonsTreatment OutcomeAerosol PropellantsDatabases, BibliographicEvidence-Based MedicineBronchoconstrictionRespiratory Therapy Department, HospitalAerosolsBronchiolitisForced Expiratory VolumeAnti-Asthmatic AgentsDrug IncompatibilityForced Expiratory Flow RatesEquipment DesignReceptors, Adrenergic, beta-2BeclomethasoneResearch DesignPublication BiasPulmonary Disease, Chronic ObstructiveDouble-Blind MethodMasksRespiratory TherapyCost-Benefit AnalysisModels, AnatomicControlled Clinical Trials as TopicMyasthenic Syndromes, CongenitalAirway ResistanceEquipment SafetyBronchial Provocation TestsRespiratory Function TestsStereoisomerismManikinsAdrenal Cortex HormonesClinical Trials as TopicRisk FactorsMEDLINEDrug CombinationsIntubation, IntratrachealPropanolaminesBudesonideTime FactorsOutcome Assessment (Health Care)Technology Assessment, BiomedicalPeak Expiratory Flow RateDrug Therapy, CombinationDrug Administration ScheduleRespiration, ArtificialPlacebosHydrocarbons, FluorinatedGlucocorticoidsObservational Study as TopicMissouriAndrostadienesGreat BritainRespiratory SoundsBias (Epidemiology)PublishingPlethysmographyUnited StatesPediatricsSeverity of Illness IndexQuality-Adjusted Life YearsSpirometryEmergency Service, HospitalRisk AssessmentLungPregnancyAnesthesia, InhalationRespiratory MechanicsBronchiTracheaModels, EconomicReproducibility of ResultsAcute DiseaseVital CapacityEvidence-Based PracticeAcupuncture TherapyPractice Guidelines as TopicDatabases, FactualWorld HealthEstrenes