Graft patency after off-pump coronary artery bypass surgery is inferior even with identical heparinization protocols: Results from the Danish On-pump Versus Off-pump Randomization Study (DOORS) [1]
A multicenter, randomized, controlled trail including 900 patients divided patients into those undergoing on-pump versus off-pump CABG. Identical heparinization and heparin reversal protocols were followed. At angiography at 6 months following CABG, graft patency was inferior after off-pump as compared to on-pump revascularization. In the off-pump group, 21% of the grafts were either stenotic or occluded; in the on-pump group, 14% were either stenotic or occluded.