Mobilization of coronary buttons
The left and right coronary ostia were mobilized with a surrounding rim of aortic wall including almost the full thickness wall of the sinus of valsalva without causing injury to the valve leaflets. The process was started at the edge of the transected aortic wall for the left coronary ostium followed by the right coronary ostium. Low voltage cautery (5-6 mv) was used for hemostasis at the harvested site.