Catheter AblationElectrophysiologic Techniques, CardiacCatheters, IndwellingCathetersCardiac ElectrophysiologyElectrophysiologyLaboratoriesCatheterizationCatheterization, Central VenousElectrophysiological PhenomenaElectrophysiological ProcessesCentral Venous CathetersLaboratories, HospitalCardiac CathetersCatheterization, PeripheralClinical Laboratory TechniquesUrinary CatheterizationAnimals, LaboratoryEquipment DesignUrinary CathetersAction PotentialsHeart Conduction SystemEquipment FailureArrhythmias, CardiacHeart AtriaMedical Laboratory PersonnelCatheter-Related InfectionsPatch-Clamp TechniquesAtrial FibrillationBody Surface Potential MappingAtrioventricular NodeTime FactorsElectrocardiographyMagnetic Resonance Imaging, InterventionalModels, CardiovascularMembrane PotentialsCardiac CatheterizationFluoroscopyPulmonary VeinsCardiac Pacing, ArtificialVoltage-Sensitive Dye ImagingClinical Laboratory Information SystemsDogsTreatment OutcomeAtrial FlutterNeuronsForeign-Body MigrationAccessory Atrioventricular BundleCatheterization, Swan-GanzHeartAtrial FunctionTachycardia, Atrioventricular Nodal ReentryBundle of HisProspective StudiesRetrospective StudiesTachycardia, VentricularJugular VeinsTachycardia, SupraventricularRats, Sprague-DawleyWolff-Parkinson-White SyndromeSubclavian VeinNeurophysiologyTachycardia, Ectopic AtrialRadiography, InterventionalReproducibility of ResultsElectrodesFeasibility StudiesIon ChannelsLaboratory PersonnelElectroretinography