Intestinal ObstructionAirway ObstructionVentriculoperitoneal ShuntUreteral ObstructionCerebrospinal Fluid ShuntsPortasystemic Shunt, SurgicalPortacaval Shunt, SurgicalPeritoneovenous ShuntDuodenal ObstructionUrinary Bladder Neck ObstructionUrethral ObstructionNasal ObstructionGastric Outlet ObstructionVentricular Outflow ObstructionHydrocephalusLacrimal Duct ObstructionArteriovenous Shunt, SurgicalCholestasisHydronephrosisCholestasis, ExtrahepaticHypertension, PortalBezoarsEsophageal and Gastric VaricesPostoperative ComplicationsPortal VeinLung Diseases, ObstructiveTreatment OutcomeIleal DiseasesSplenic VeinConstriction, PathologicHeart Septal Defects, AtrialAscitesTomography, X-Ray ComputedPortal SystemJejunal DiseasesVena Cava, InferiorForced Expiratory VolumeHepatic EncephalopathyGastrointestinal HemorrhageNasolacrimal DuctSpirometryRetrospective StudiesTissue AdhesionsColonic DiseasesRespiratory Function TestsKidney PelvisHeart Defects, CongenitalPulmonary CirculationStentsVital CapacitySuperior Vena Cava SyndromeForeign-Body MigrationRenal VeinsPulmonary ArteryHeart Septal DefectsBronchial DiseasesFollow-Up StudiesHeart Septal Defects, VentricularEquipment FailureAnastomosis, SurgicalAirway ResistanceEndoscopyPalliative CareUreterHepatic VeinsCardiomyopathy, HypertrophicHeart Bypass, RightCatheterizationInfant, NewbornPhlebographyTime FactorsHydrocephalus, Normal PressureLaryngeal DiseasesTracheal StenosisDrainagePortographyReoperationLiver CirculationForamen Ovale, PatentJaundice, ObstructiveAsthmaLungTracheal DiseasesProspective StudiesPulmonary Disease, Chronic ObstructiveHeart SeptumMesenteric VeinsHypoplastic Left Heart SyndromeIliac VeinVena Cava, SuperiorDiatrizoate MeglumineVentilation-Perfusion RatioIntestine, SmallCommon Bile DuctBlalock-Taussig ProcedureCardiac CatheterizationPulmonary Veno-Occlusive DiseaseHemodynamicsIntussusceptionBronchitis