Medical News Today -- When a patient ages, some heart valves, specifically the aortal valve, can begin to wear down. On Thursday, November 6th at 3 PM Eastern, join cardiac surgeons Alan Markowitz, MD, and Arie Blitz, MD, as they present a Freestyle Aortic Root Replacement. In addition to this viewers will also have the opportunity to see a replacement of ascending aorta and hemi-arch under circulatory arrest.