Angiographic and Ventriculographic Results According to Collateral Group
| Characteristic | Group I (n = 25) | Group II (n = 31) | P |
|---|---|---|---|
| CTO | |||
| LAD/DIAG | 11 (44.0) | 11 (35.5) | NS |
| Proximal LAD | 5 (20) | 4 (13) | NS |
| Mid LAD | 5 (20) | 7 (22.5) | NS |
| DIAG | 1 (4) | 0 (0) | NS |
| LCX/OM | 5 (20.0) | 5 (16.1) | NS |
| Proximal LCX | 1 (4) | 2 (6.5) | NS |
| OM | 4 (16) | 3 (9.7) | NS |
| RCA/PDA | 9 (36.0) | 15 (48.4) | NS |
| Proximal RCA | 4 (16) | 7 (22.6) | NS |
| Mid/distal RCA | 5 (20) | 8 (25.8) | NS |
| LV angiogram findings* | n = 19 | n = 26 | |
| RWA | 10 (52.6) | 5 (19.2) | 0.02 |
| EF (%) | 52.2 ± 12.8 | 54.4 ± 12.3 | NS |
↵* For patients with satisfactory LV angiogram (n = 45).
legend LAD = left anterior descending artery; DIAG = diagonal branch of left anterior descending artery; NS = not significant; LCX = left circumflex artery; OM = obtuse marginal; RCA = right coronary artery; PDA = posterior descending artery; LV = left ventricle; RWA = regional wall motion abnormality; EF = ejection fraction.
Data are number of patients, with percentage in parentheses, or mean ± SD.