The principal technical challenge in ''off-pump'' coronary surgery is
to perform an accurate coronary anastomosis on a beating heart. For th
e purpose of training our residents in performing off-pump coronary ar
tery anastomoses, we have developed a mechanical heart simulator in wh
ich trainees can practice performing these anastomoses repeatedly unti
l a satisfactory level of skill and confidence is attained. (C) 1998 b
y The Society of Thoracic Surgeons.