We report a septal branch right ventricular fistula complicated after coron
ary snaring in coronary artery bypass surgery without aortic cross-clamping
. The tip of the needle of the snaring suture is made blunt in order to dec
rease the risk of mechanical injury, but trauma to the septal branch is pos
sible. This rare complication of snaring should be taken into consideration
in performing aortic nonclamping coronary artery bypass surgery. (C) 1999
by The Society of Thoracic Surgeons.