Intestinal ObstructionAirway ObstructionUreteral ObstructionDuodenal ObstructionUrinary Bladder Neck ObstructionUrethral ObstructionNasal ObstructionGastric Outlet ObstructionVentricular Outflow ObstructionLacrimal Duct ObstructionCholestasisHydronephrosisCholestasis, ExtrahepaticBezoarsLung Diseases, ObstructiveIleal DiseasesJejunal DiseasesForced Expiratory VolumeConstriction, PathologicNasolacrimal DuctSpirometryColonic DiseasesKidney PelvisVital CapacityTissue AdhesionsRespiratory Function TestsBronchial DiseasesAirway ResistanceTreatment OutcomeUreterSuperior Vena Cava SyndromeStentsCardiomyopathy, HypertrophicTomography, X-Ray ComputedLaryngeal DiseasesTracheal StenosisJaundice, ObstructiveEndoscopyAsthmaTracheal DiseasesPalliative CarePulmonary Disease, Chronic ObstructivePostoperative ComplicationsDiatrizoate MeglumineCommon Bile DuctRetrospective StudiesIntussusceptionBronchitisRetroperitoneal FibrosisIntestine, SmallIleusRadioisotope RenographyDacryocystorhinostomyHerniaBudd-Chiari SyndromeTechnetium Tc 99m MertiatideDuodenal DiseasesPhlebographyIntestinal AtresiaLaparotomyCholangiopancreatography, Endoscopic RetrogradePulmonary Veno-Occlusive DiseaseFollow-Up StudiesDrainageImino AcidsVena Cava, InferiorCatheterizationBronchoscopyDigestive System Surgical ProceduresBiliary Tract DiseasesTime FactorsLungIliac VeinFibrosisPulmonary VentilationIntubation, GastrointestinalUrinary BladderHeart SeptumUrographyCommon Bile Duct DiseasesIntestinal Pseudo-ObstructionAuscultationIntubationDyspneaAcute DiseaseCholangitisRhinometry, AcousticUrodynamicsTransposition of Great VesselsEsophageal StenosisBronchodilator AgentsProspective StudiesMeckel DiverticulumGallstonesKidneyInfant, NewbornAortic Stenosis, SubvalvularPulmonary EmphysemaTotal Lung CapacityAortic Arch Syndromes