Table 4.
Characteristics of Coronary Artery Branches With Aneurysms With Maximum Coronary Artery Z Score ≥10
| Branch | |
| RCA | 297 (33%) |
| LMCA | 91 (10%) |
| LAD | 370 (42%) |
| LCX | 135 (15%) |
| Maximum coronary artery Z score | Median (IQR) 15.7 (12.3–22.3) |
| 10.0–19.9 | 603 (68%) |
| 20.0–29.9 | 195 (22%) |
| 30.0–39.9 | 48 (5%) |
| 40.0+ | 47 (5%) |
| Involvement of the LAD/LMCA/LCX bifurcation | |
| Yes | 338 (38%) |
| No | 555 (62%) |
| Aneurysm architecture | |
| Isolated aneurysm in normal vessel | 161 (18%) |
| Isolated aneurysm in a dilated vessel | 332 (37%) |
| Complex aneurysms* | 251 (28%) |
| Undefined/unreported | 149 (17%) |
| Aneurysm location within branch | |
| Proximal segment | 343 (38%) |
| Distal segment | 79 (9%) |
| Extending throughout segment | 221 (25%) |
| Undefined/unreported | 250 (28%) |
| Aneurysm shape | |
| Saccular | 171 (20%) |
| Fusiform/irregular | 306 (34%) |
| Undefined/unreported | 416 (47%) |
| Aneurysm diameter to height ratio (n=312) | Median (IQR) 0.73 (0.53–1.06) |
| Aneurysm estimated area (n=312) | Median (IQR) 0.72 (0.44–1.34) |
IQR indicates interquartile range; LAD, left anterior descending artery; LCX, left circumflex artery; LMCA, left main coronary artery; and RCA, right coronary artery.
*
Architecture other than a single isolated aneurysm in a coronary artery branch.