Results:
Before propensity Score-Matched, compared with the LIMA-LAD group, the SVG-LAD group had a significantly higher mean graft flow volume (37.85±23.28 vs 29.70±20.97ml/min, P=0.021),but a lower value of pulse index (2.12±0.68 vs 2.65±1.01,P<0.001).There was no significant difference between the two groups in terms of DF(P>0.05). After 1:2 propensity Score-Matched, there were 114 patients were included (SVG-LAD 38, LIMA-LAD 76), there was no difference in the baseline data between the two groups. Compared with the LIMA-LAD group, the SVG-LAD group also had a lower value of pulse index (2.07±0.63 vs 2.74±1.02,P<0.001),and also a higher mean graft flow volume (37.27±24.31 vs 29.92±21.92ml/min),but there was no statistically difference(P=0.109). There was no significant difference between the two groups in DF (P>0.05). There was no difference among the two groups in patency rate(P=0.405).