Table 4 Graft flow and angiographic results according to prior history of percutaneous coronary intervention
PCI (+) | PCI (−) | p value | ||
|---|---|---|---|---|
Number of patients | 54 | 280 | – | |
Age | 67 ± 9 | 67 ± 10 | 0.44 | |
Female | 12 (22.2%) | 68 (24.3%) | 0.75 | |
DM | 25 (46.3%) | 149 (53.2%) | 0.35 | |
Stenosis location and severity | Stenosis at distal portion #7 or #8 | 25 (46.3%) | 107 (38.2%) | 0.27 |
Minimal luminal diameter (mm) | 0.82 ± 0.53 | 0.73 ± 0.52 | 0.12 | |
Reference diameter (mm) | 2.76 ± 0.57 | 2.82 ± 0.78 | 0.29 | |
Calculated severity of stenosis (%) | 70 ± 19 | 74 ± 17 | 0.07 | |
Prior coronary intervention | Stent implantation | 28 (51.8%) | – | – |
Drug-eluting | 18 | – | – | |
Bare metal / unknown stent | 6 / 4 | – | – | |
Balloon angioplasty | 3 (5.6%) | – | – | |
Unsuccessful | 15 (27.8%) | – | – | |
No detalied information about old PCI | 5 (9.2%) | – | – | |
PCI complications, such as dissection, perforation, etc. | 3 (5.6%) | – | – | |
Graft flow and angiographic results | Graft flow (ml/min) | 42 ± 27 | 53 ± 29 | 0.006 |
Fow insufficiency (< 20 ml/min) | 12 (22.2%) | 23 (8.2%) | 0.002 | |
Angiographic competitive flow | 5 (9.2%) | 3 (1.1%) | < 0.001 | |
Graft failure | 5 (9.2%) | 5 (1.8%) | 0.003 |