Antithyroid AgentsMethimazolePropylthiouracilGraves DiseaseCarbimazoleHyperthyroidismThyrotoxicosisImmunoglobulins, Thyroid-StimulatingThyroxineThyroid GlandThiouracilAgranulocytosisReceptors, ThyrotropinHeartHypothyroidismThyroid Function TestsCardiac OutputThyrotropinTriiodothyronineIodine RadioisotopesThyroidectomyMyocardiumMyocardial ContractionMyocytes, CardiacGoiterHeart RateThyroid HormonesGraves OphthalmopathyGoiter, NodularAutoantibodiesBlood PressureVentricular Function, LeftHemodynamicsHeart FailureThyroid DiseasesCardiotonic AgentsThyroiditis, AutoimmuneCross CirculationTime FactorsHeart VentriclesCoronary CirculationDogsThyroiditisArrhythmias, CardiacPregnancy ComplicationsRats, Sprague-DawleyRecurrenceAmrinoneHeart DiseasesThyroglobulinMyocardial InfarctionRats, WistarElectrocardiographyHashimoto DiseaseMethylthiouracilIodide PeroxidaseMinoxidilIodineVasculitis, Leukocytoclastic, CutaneousSympathetic Nervous SystemBradycardiaVascular ResistanceCardiomegalyDose-Response Relationship, DrugPerchloratesEchocardiographyCardiomyopathiesCardiac Surgical ProceduresCalciumDeath, Sudden, Cardiac