Results
The five-year patency rate was 123/139 (88.5%). The patency for the
no-touch vein grafts was 57/64 (89.1%) in the on-pump vs 37/45 (82.2%)
in the off-pump group. All left internal thoracic arteries except for
one, 29/30 (96.6%), were patent. All vein grafts used to bypass the
left anterior descending and the diagonal arteries were patent 32/32.
The lowest patency rate for the saphenous veins was to the right
coronary territory, particularly in off-pump surgery (80.0% vs 62.5%
for the on- respective off-pump groups).