Table 1:
A comparison of bypassed and non-bypassed chronically totally occluded arteries
| All (n = 246) | Bypassed (n = 214) | Non-bypassed (n = 32) | P-value | |
|---|---|---|---|---|
| Chronically totally occluded artery | ||||
| LAD | 83 | 82 | 1 | |
| Diag | 5 | 4 | 1 | |
| LCx | 44 | 28 | 16 | |
| RCA | 114 | 100 | 14 | |
| Rentrop collateral grade | 2.4 ± 0.7 | 2.5 ± 0.6 | 1.9 ± 0.8 | <0.001 |
| Regional wall score | 1.7 ± 0.6 | 1.7 ± 0.6 | 1.9 ± 0.7 | 0.88 |
| Akinesis or dyskinesis in CTO artery territory | 14 (6%) | 9 (4%) | 5 (16%) | 0.023 |
The distribution of CTO lesions was compared using the χ2 test, and the ratio of akinesis/dyskinesis was compared by Fisher's exact test.
CTO: chronic total occlusion; LAD: left anterior descending artery; Diag: diagonal artery; LCx: left circumflex artery; RCA: right coronary artery.