Table 3 Comparison of the angiographic and procedural data between patients who had emergency left main (LM) vs. non-emergency LM revascularization
|  | Overall, n = 2138 | Emergent LM revascularization n = 460 (21.5%) | P-Value | Non-emergent LM revascularization n = 1678 (78.5%) | P Value | ||
|---|---|---|---|---|---|---|---|
PCI (n = 264) | CABG (n = 196) | PCI (n = 958) | CABG (n = 720) | ||||
Angiographic characteristics | |||||||
 Medina classification, n (%) |  |  |  |  < 0.001 |  |  |  < 0.001 |
 1,1,1 | 760 (35.5%) | 74 (28.03%) | 62 (31.63%) | 0.402 | 356 (37.16%) | 268 (37.22%) | 0.979 |
 1,0,1 | 162 (7.6%) | 11 (4.17%) | 28 (14.29%) |  < 0.001 | 37 (3.86%) | 86 (11.94%) |  < 0.001 |
 0,1,1 | 393 (18.4%) | 79 (29.92%) | 45 (22.96%) | 0.096 | 153 (15.97%) | 116 (16.11%) | 0.938 |
 1,1,0 | 402 (18.8%) | 60 (22.73%) | 11 (5.61%) |  < 0.001 | 250 (26.10%) | 81 (11.25%) |  < 0.001 |
 1,0,0 | 202 (9.4%) | 20 (7.58%) | 23 (11.73%) | 0.130 | 96 (10.02%) | 81 (11.25%) | 0.417 |
 0,1,0 | 160 (7.5%) | 11 (4.17%) | 19 (9.69%) | 0.016 | 45 (4.70%) | 85 (11.81%) |  < 0.001 |
 0,0,1 | 59 (2.7%) | 9 (3.41%) | 8 (4.08%) | 0.689 | 21 (2.19%) | 21 (2.92%) | 0.347 |
Lesion characteristics | |||||||
 Isolated left main disease, n (%) | 138 (6.5%) | 22 (8.3%) | 12 (6.1%) |  < 0.001 | 81 (8.5%) | 23 (3.2%) |  < 0.001 |
 LM + (triple-vessel disease), n (%) | 1202 (56.2%) | 98 (37.1%) | 124 (63.3%) |  < 0.001 | 481 (50.2%) | 499 (69.3%) |  < 0.001 |
 LM + (LAD and LCx), n (%) | 327 (15.3%) | 50 (18.9%) | 27 (13.8%) |  < 0.001 | 138 (14.4%) | 112 (15.6%) |  < 0.001 |
 LM + [RCA and (LAD or LCx)], n (%) | 139 (6.5%) | 20 (7.6%) | 25 (12.8%) |  < 0.001 | 44 (4.6%) | 50 (6.9%) |  < 0.001 |
 LM + LAD, n (%) | 287 (13.4%) | 63 (23.9%) | 8 (4.1%) |  < 0.001 | 188 (19.6%) | 28 (3.9%) |  < 0.001 |
 LM + LCx, n (%) | 35 (1.6%) | 10 (3.8%) | 0 (0.0%) |  < 0.001 | 20 (2.1%) | 5 (0.7%) |  < 0.001 |
 LM + RCA, n (%) | 10 (0.5%) | 1 (0.4%) | 0 (0.0%) | 0.99 | 6 (0.6%) | 3 (0.4%) | 0.740 |
SYNTAX score |  |  |  |  < 0.001 |  |  |  < 0.001 |
 Low (≤ 22), n (%) | 430 (20.2%) | 81 (30.68%) | 18 (9.18%) |  < 0.001 | 223 (23.30%) | 108 (15.17%) |  < 0.001 |
 Intermediate (23–32), n (%) | 1107 (52.0%) | 104 (39.39%) | 83 (42.35%) | 0.524 | 577 (60.29%) | 343 (48.17%) |  < 0.001 |
 High (≥ 33), n (%) | 592 (27.8%) | 79 (29.92%) | 95 (48.47%) |  < 0.001 | 157 (16.41%) | 261 (36.66%) |  < 0.001 |
 SYNTAX score, median (IQR) | 28 (24–33) | 28 (22–33) | 32 (25–37) |  < 0.001 | 28 (23–32) | 29 (25–35) |  < 0.001 |
Lesion location | |||||||
 Ostial/shaft only, n (%) | 536 (25.1%) | 51 (19.32%) | 59 (30.10%) | 0.007 | 184 (19.21%) | 242 (33.61%) |  < 0.001 |
 Distal bifurcation, n (%) | 1602 (74.9%) | 213 (80.68%) | 137 (69.90%) | 0.007 | 774 (80.79%) | 478 (66.39%) |  < 0.001 |
Procedure | |||||||
 Intra-aortic ballon pump, n (%) | 200 (9.4%) | 62 (23.48%) | 52 (26.53%) | 0.454 | 36 (3.76%) | 50 (6.94%) | 0.003 |
 Impella, n (%) | 14 (0.7%) | 6 (2.27%) | 1 (0.51%) | 0.247 | 6 (0.63%) | 1 (0.14%) | 0.250 |