Which intraoperative condition may prompt consideration of off-pump CABG or alternative anastomosis strategies?

• A. Extensive aortic atherosclerosis
• B. Normal aorta
• C. Mild smoking history
• D. Extensive aortic atherosclerosis or heavily calcified aorta

Answer: (C)

The key intraoperative factor that prompts consideration of off-pump CABG or alternative anastomosis strategies is extensive aortic disease—either atherosclerosis or heavy calcification of the aorta. Manipulating a heavily diseased aorta during cannulation, cross-clamping, or suturing grafts can dislodge plaques and cause embolic stroke or other complications. Using off-pump techniques or “anaortic” approaches minimizes or eliminates aortic manipulation, reducing embolic risk while still allowing completion of complete revascularization. A normal aorta or a mild smoking history do not create the same intraoperative imperative to alter the grafting strategy.