Bronchitis, ChronicBronchitisPivampicillinAnti-Infective AgentsPulmonary Disease, Chronic ObstructiveBronchodilator AgentsForced Expiratory VolumeAsthmaSputumAdrenal Cortex HormonesSpirometryScopolamine DerivativesLung Diseases, ObstructiveRespiratory Function TestsAdministration, InhalationDyspneaSeverity of Illness IndexVital CapacityAcute DiseaseDisease ProgressionAlbuterolCholinergic AntagonistsExpectorantsPicornaviridae InfectionsAnti-Asthmatic AgentsRhinovirusLungPulmonary MedicineTreatment OutcomeHospitalizationCystic FibrosisPeak Expiratory Flow RateBronchiectasisBudesonideNebulizers and VaporizersAdrenergic beta-2 Receptor AgonistsRespiratory Tract InfectionsQuality of LifeSmokingRespiratory System AgentsDouble-Blind MethodProspective StudiesOxygen Inhalation TherapyEthanolaminesExercise ToleranceMetered Dose InhalersPulmonary EmphysemaStatus AsthmaticusAndrostadienes