Airway ObstructionLaryngeal EdemaRespiratory SoundsLaryngeal DiseasesIntestinal ObstructionAirway ResistanceTracheal StenosisUreteral ObstructionLarynxLung Diseases, ObstructiveLaryngomalaciaIntubation, IntratrachealLaryngismusLaryngoscopyTracheal NeoplasmsForced Expiratory VolumeBronchoscopyRespiratory Function TestsAsthmaEpiglottisVocal Cord ParalysisBronchial DiseasesSpirometryAirway RemodelingTracheotomyTracheal DiseasesVital CapacityBronchiAirway ExtubationTracheostomyLaryngostenosisTongue 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 CapacityRespiratory MucosaVentricular Outflow ObstructionTracheitisResidual VolumeHeliumLung Volume MeasurementsMucusPeak Expiratory Flow RateForced Expiratory Flow RatesBronchoalveolar Lavage FluidAlbuterolRespiratory Tract DiseasesLaser TherapyMaximal Expiratory Flow RateTomography, X-Ray ComputedRespiratory HypersensitivityAdministration, InhalationPulmonary EmphysemaFunctional Residual CapacityAerosolsLacrimal Duct ObstructionShy-Drager SyndromeRespirationLaryngeal MasksHorse DiseasesInhalationLaryngeal NeoplasmsRespiratory InsufficiencyHigh-Frequency Jet VentilationCoughBronchial SpasmAirway ManagementCystsPharynxInfant, NewbornSleep Apnea, ObstructiveMacroglossiaSleep Apnea SyndromesLaryngoceleAir Pressure