Table 4.
Angiographic and procedural information in patients with an identifiable culprit artery
| Characteristic | No Collaterals (n=63) | Collaterals (n=52) | P value |
|---|---|---|---|
| Extent of CAD | |||
| 1 vessel disease | 37 (59%) | 21 (40%) | 0.021 |
| 2 vessel disease | 20 (32%) | 16 (31%) | 0.021 |
| 3 vessel disease | 6 (10%) | 15 (29%) | 0.021 |
| Severity of CAD | |||
| <70% stenosis | 36 (57%) | 34 (65%) | 0.367 |
| ≥70% stenosis | 63 (100%) | 52 (100%) | --- |
| ≥70%, <90% stenosis | 17 (27%) | 0 | <0.001 |
| >90% stenosis | 45 (71%) | 52 (100%) | <0.001 |
| 100% stenosis | 5 (8%) | 14 (27%) | 0.006 |
| Culprit artery | |||
| Occluded culprit | 5 (8%) | 14 (27%) | 0.006 |
| culprit vessel LAD | 17 (27%) | 12 (23%) | 0.631 |
| collateral to culprit | NA | 8 (67%) | |
| culprit vessel RCA | 26 (41%) | 18 (35%) | 0.465 |
| collateral to culprit | NA | 15 (83%) | |
| culprit vessel LCX | 16 (25%) | 13 (25%) | 0.961 |
| collateral to culprit | NA | 5 (38%) | |
| culprit vessel LM | 2 (3%) | 0 | 0.500 |
| collateral to culprit | NA | 0 | |
| culprit vessel SVG | 2 (3%) | 9 (17%) | 0.022 |
| collateral to culprit | NA | 1 (11%) | |
| PCI performed at the time of the index angiogram | 44 (70%) | 36 (69%) | 0.944 |
Data presented as number (percentage), CAD= coronary artery disease, LAD= left anterior descending coronary artery, LCX= left circumflex coronary artery, LM= left main coronary artery, PCI= percutaneous coronary intervention, RCA= right coronary artery, SVG= saphenous vein graft