Cardiac CathetersCardiac CatheterizationCatheters, IndwellingCathetersMyocytes, CardiacCatheterizationCatheterization, Central VenousCardiac OutputCardiac Surgical ProceduresHeartArrhythmias, CardiacCentral Venous CathetersCatheterization, PeripheralUrinary CatheterizationDeath, Sudden, CardiacTreatment OutcomeEquipment FailureTime FactorsUrinary CathetersCardiac Pacing, ArtificialEquipment DesignCardiac TamponadeElectrocardiographyHeart DiseasesCatheter-Related InfectionsProspective StudiesCardiomegalyMyocardiumRetrospective StudiesHeart VentriclesMyocardial ContractionFollow-Up StudiesHeart ArrestHeart AtriaHemodynamicsFluoroscopyHeart RateHeart Conduction SystemCatheterization, Swan-GanzForeign-Body MigrationCardiac Imaging TechniquesEchocardiographyHeart FailureAtrial FibrillationCardiomyopathiesDogsMyoblasts, CardiacMyocardial InfarctionBlood PressureCardiac MyosinsVentricular Function, LeftPulmonary VeinsJugular VeinsCardiac VolumeHeart Defects, CongenitalCardiac GlycosidesFeasibility StudiesCardiac Output, LowPostoperative ComplicationsSubclavian VeinRisk FactorsHeart TransplantationRadiography, InterventionalVentricular RemodelingOut-of-Hospital Cardiac ArrestReproducibility of ResultsStroke VolumeTroponin ISilicone ElastomersRats, Sprague-DawleyHeart Function Tests