Airway ObstructionLaryngeal EdemaRespiratory SoundsLaryngeal DiseasesIntestinal ObstructionAirway ResistanceTracheal StenosisUreteral ObstructionLarynxLung Diseases, ObstructiveLaryngomalaciaLaryngismusLaryngoscopyIntubation, IntratrachealTracheal NeoplasmsForced Expiratory VolumeBronchoscopyRespiratory Function TestsAsthmaEpiglottisVocal Cord ParalysisBronchial DiseasesSpirometryAirway RemodelingTracheotomyTracheal DiseasesVital CapacityAirway ExtubationTracheostomyLaryngostenosisBronchiTongue DiseasesLaryngitisNasal ObstructionVocal CordsTracheobronchomalaciaLungCroupRespiratory SystemBronchitisGlottisPierre Robin SyndromeDuodenal ObstructionBronchial HyperreactivityPrecipitating FactorsPlethysmography, Whole BodyMaximal Expiratory Flow-Volume CurvesDyspneaPulmonary VentilationBronchoconstrictionFiber Optic TechnologyUrinary Bladder Neck ObstructionUrethral ObstructionBronchial Provocation TestsBronchodilator AgentsPulmonary Disease, Chronic ObstructiveGastric Outlet ObstructionRespiratory MechanicsRetropharyngeal AbscessTotal Lung CapacityVentricular Outflow ObstructionResidual VolumeTracheitisRespiratory MucosaHeliumLung Volume MeasurementsPeak Expiratory Flow RateForced Expiratory Flow RatesAlbuterolRespiratory Tract DiseasesLaser TherapyMaximal Expiratory Flow RateBronchoalveolar Lavage FluidTomography, X-Ray ComputedRespiratory HypersensitivityAdministration, InhalationPulmonary EmphysemaFunctional Residual CapacityLacrimal Duct ObstructionShy-Drager SyndromeAerosolsRespirationLaryngeal MasksLaryngeal NeoplasmsInhalationHorse DiseasesMucusRespiratory InsufficiencyHigh-Frequency Jet VentilationCoughBronchial SpasmAirway ManagementCystsPharynxSleep Apnea, ObstructiveMacroglossiaSleep Apnea SyndromesLaryngoceleInfant, NewbornAir Pressure