fig4

Figure 4. A: An intraoperative view of migrated CoreValve^® prosthesis (solid arrow) through aortic incision at the level of sino-tubular junction (dotted arrow). The surgical field is flushed with cold saline solution to soften the rigid nitinol struts of the prosthetic aortic valve for smooth extraction through aortotomy; B: an intraoperative view of migrated Medtronic-CoreValve^® prosthesis removed from ascending aorta