Nashville, TN-based Centennial Medical Center is set to start construction of a new heart center. The hospital will add 100,000 square feet for heart patients, update existing heart treatment areas, add new surgery rooms, and increase bed space. The expansion is the second part of a two-phase, $143 million project at the hospital. In Tennessee, Centennial's growth is the latest move by a hospital to expand treatment options and space to woo heart patients. Over the years, competition has been measured in big budgets for ad campaigns, aggressive recruiting of top cardiologists, and new facilities, The Tennessean reports.