Cardiac CathetersCardiac CatheterizationCatheters, IndwellingCardiologyCathetersMyocytes, CardiacCatheterizationCatheterization, Central VenousCardiac OutputCardiac Surgical ProceduresArrhythmias, CardiacHeartHeart DiseasesCentral Venous CathetersDeath, Sudden, CardiacElectrocardiographyCatheterization, PeripheralCardiology Service, HospitalUrinary CatheterizationHeart MurmursRadiology, InterventionalHeart FailureCardiac Pacing, ArtificialTreatment OutcomeHeart Defects, CongenitalTime FactorsEquipment FailureEquipment DesignUrinary CathetersThoracic SurgeryPhysiciansPhysician's Practice PatternsEchocardiographyCardiac Imaging TechniquesMyocardial InfarctionCardiac TamponadeProspective StudiesAtrial FibrillationHeart AuscultationHeart VentriclesCatheter-Related InfectionsRetrospective StudiesCardiomyopathiesCardiomegalyMyocardiumFluoroscopyMyocardial ContractionCardiac Care FacilitiesHeart AtriaHemodynamicsHeart ArrestFollow-Up StudiesRadiography, InterventionalCoronary AngiographyRisk FactorsGuideline AdherenceInternal MedicineCatheterization, Swan-GanzClinical CompetenceVentricular Function, LeftHeart Conduction SystemHeart RateReferral and ConsultationDiagnostic Techniques, CardiovascularFetal HeartPractice Guidelines as TopicAngioplasty, Balloon, CoronaryMyocardial IschemiaForeign-Body MigrationMyoblasts, CardiacVentricular Dysfunction, LeftMedicineBlood PressureRisk AssessmentStroke VolumeDogsPredictive Value of TestsCoronary DiseaseCardiac MyosinsSpecializationCoronary Care UnitsFeasibility StudiesCardiac VolumeCardiac GlycosidesTroponin TSocieties, MedicalSpecialties, NursingJugular VeinsCoronary Artery DiseaseCardiac Output, LowRadiation ProtectionCoronary Artery BypassElectric CountershockAdrenergic beta-AntagonistsOut-of-Hospital Cardiac ArrestUnited StatesSubclavian VeinHeart TransplantationVentricular RemodelingAnti-Arrhythmia Agents