SympathectomyDenervationSympathetic Nervous SystemGanglionectomyMuscle Denervation3-IodobenzylguanidineAutonomic DenervationAutonomic Nervous System DiseasesSympathectomy, ChemicalStellate GanglionEphedrineIodobenzenesShy-Drager SyndromeHeartSympatholyticsAtrial RemodelingAdrenergic FibersNorepinephrineHyperhidrosisCatecholaminesRenal ArteryBlood PressureTyramineCatheter AblationKidneyOxidopamineRadiopharmaceuticalsHypertensionIodine RadioisotopesParasympatholyticsTachycardia, VentricularHeart RateCerebral ArteriesLong QT SyndromeAutonomic Nervous SystemParkinson DiseaseRegional Blood FlowDogsThallium RadioisotopesRats, Inbred StrainsCarbon RadioisotopesTime FactorsHemodynamicsRats, Sprague-DawleyParasympathectomyMyocardiumTreatment OutcomeMuscular AtrophyMusclesPressoreceptorsNeuromuscular JunctionMuscle, Skeletal