Metal stabilizing devices used in beating heart surgery, although largely e
ffective, occasionally slip or cause lacerations of epicardial veins or myo
cardium, resulting in blood loss that requires time-consuming corrective ma
neuvers. The use of a fenestrated felt as a cushion in conjunction with the
stabilizers eliminates slipping and/or trauma, thus facilitating coronary
anastomoses on the beating heart. (C) 1999 by The Society of Thoracic Surge
ons.