Amiodarone/toxicity; Anesthesia, Local; Anti-Arrhythmia Agents/toxicity; Autonomic Nerve Block; Goiter, Nodular/chemically induced; Goiter, Nodular/surgery; Heart Diseases/complications; Heart Diseases/drug therapy; Iopanoic Acid/administration & dosage; Minimally Invasive Surgical Procedures/methods; Thyroidectomy/methods; Thyrotoxicosis/chemically induced; Thyrotoxicosis/surgery; Video-Assisted Surgery/methods; Aged; Amiodarone/therapeutic use; Anti-Arrhythmia Agents/therapeutic use; Arrhythmias, Cardiac/complications; Arrhythmias, Cardiac/drug therapy; Cardiomyopathy, Dilated/complications; Cardiomyopathy, Dilated/drug therapy; Female; Goiter, Nodular/blood; Health Status Indicators; Heart Failure/complications; Heart Failure/drug therapy; Humans; Male; Middle Aged; Myocardial Infarction/complications; Myocardial Infarction/drug therapy; Premedication; Thyrotoxicosis/blood; Thyroxine/blood; Triiodothyronine/blood