Catheter ObstructionVentriculostomyCatheters, IndwellingVentriculoperitoneal ShuntCerebrospinal Fluid ShuntsHydrocephalusEquipment FailureCathetersIntestinal ObstructionAirway ObstructionCatheterizationUreteral ObstructionCatheterization, Central VenousCentral Venous CathetersCardiac CathetersCatheterization, PeripheralUrinary CatheterizationUrinary CathetersDuodenal ObstructionUrethral ObstructionUrinary Bladder Neck ObstructionCatheter-Related InfectionsNasal ObstructionGastric Outlet ObstructionEquipment DesignVentricular Outflow ObstructionForeign-Body MigrationTreatment OutcomeLacrimal Duct ObstructionCardiac CatheterizationCatheterization, Swan-GanzFluoroscopyJugular VeinsSubclavian VeinPulmonary VeinsSilicone ElastomersPeritonitisProspective StudiesTime FactorsAtrial FibrillationPeritoneal DialysisRetrospective StudiesCholestasis