TracheaTracheal NeoplasmsTracheal DiseasesEmbalmingBronchoscopyVena Cava, SuperiorCatheterization, Central VenousBronchiBronchial NeoplasmsJugular VeinsIntubation, IntratrachealBronchial DiseasesFiber Optic TechnologySubclavian VeinForeign BodiesClavicleMucous MembraneCardiac TamponadeTracheal StenosisPulmonary VeinsGuinea PigsUltrasonography, InterventionalRadiology Information SystemsRadiography, ThoracicMuscle, SmoothHeart AtriaCoronary StenosisMuscle RelaxationLarynxMuscle ContractionLung NeoplasmsTomography, X-Ray ComputedRespiratory SystemMucusStentsTracheotomyCatheter AblationAnthropometryLungHistamineEpitheliumAirway ObstructionPredictive Value of TestsAtrial FibrillationTracheitisTreatment OutcomeRetrospective StudiesSRS-AExocrine GlandsMethacholine CompoundsNeurokinin ATracheostomySubstance PParasympatholyticsParasympathetic Nervous SystemProspective StudiesVagus NerveTracheoesophageal FistulaLaryngeal NervesAtropineLaryngeal CartilagesAcetylcholineTachykininsMucociliary ClearanceElectric StimulationIsoproterenol