Prevention of Atrial Fibrillation Following Noncardiac Thoracic Surgery

The investigators hypothesize that the medication amiodarone decreases the incidence of atrial fibrillation (AF) following non-cardiac open-chest surgery. Their specific aims are to: * Determine the effectiveness of amiodarone for the prevention of AF following non-cardiac open-chest surgery; * Determine the influence of the prevention of AF following non-cardiac thoracic surgery on post-surgical duration of stay in the Intensive Care Unit (ICU); post-surgical duration of stay in a hospital unit that employs cardiac monitoring; and duration of post-surgical hospital stay; and * Determine the safety of amiodarone for the prevention of AF following non-cardiac open-chest surgery.