SympathectomyCatheter AblationAtrial RemodelingDenervationRenal ArteryHypertensionKidneyBlood PressureCathetersPulmonary VeinsCatheters, IndwellingSympathetic Nervous SystemGanglionectomyMuscle Denervation3-IodobenzylguanidineCardiac CathetersAutonomic DenervationElectrophysiologic Techniques, CardiacAutonomic Nervous System DiseasesSympathectomy, ChemicalAtrial FibrillationStellate GanglionFluoroscopyEphedrineHypertension, PulmonaryBody Surface Potential MappingPulmonary Veno-Occlusive DiseaseIodobenzenesEquipment DesignShy-Drager SyndromeHeartTherapeutic IrrigationTreatment OutcomeTachycardia, VentricularHeart AtriaSympatholyticsTachycardia, SupraventricularElectrodesSurgery, Computer-AssistedAtrial FlutterHeart Conduction SystemNorepinephrineAdrenergic FibersCatecholaminesTricuspid ValveAblation TechniquesHyperhidrosisElectrocardiographyTime FactorsFeasibility StudiesHypertension, RenalTyramineHeart RateHypertension, PortalCatheterizationFollow-Up StudiesOxidopamineRadiopharmaceuticalsIodine RadioisotopesCardiac Pacing, ArtificialCatheterization, Central VenousAntihypertensive AgentsDogsHypertension, RenovascularParasympathetic Nervous System