Table 2 Comparison of the hospital presentation 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) | ||||
Hospital presentation | |||||||
 Cardiac arrest, n (%) | 18 (1%) | 7 (2.65%) | 11 (5.61%) | 0.105 | NA | NA | NA |
Types, n (%) | |||||||
 Ventricular fibrillation | 9 (50%) | 2 (28.57%) | 7 (63.64%) | 0.335 | NA | NA | NA |
 Pulseless electrical activity | 6 (33.3%) | 3 (42.86%) | 3 (27.27%) | 0.627 | NA | NA | NA |
 Asystole | 3 (16%) | 2 (28.57%) | 1 (9.09%) | 0.528 | NA | NA | NA |
Location, n (%) | |||||||
 Out of hospital cardiac arrest (OHCA) | 1 (5.5%) | 1 (14.29%) | 0 | 0.389 | NA | NA | NA |
 In-hospital cardiac arrest (IHCA) | 17 (94.5%) | 6 (85.71%) | 11 (100%) | 0.389 | NA | NA | NA |
Timing, n (%) | |||||||
 Pre coronary angiography | 18 (100%) | 7 (100%) | 11 (100%) |  > 0.99 | NA | NA | NA |
 Post coronary angiography | 0 (0%) | 0 | 0 |  > 0.99 | NA | NA | NA |
 Cardiogenic shock and cardiac arrest, n (%) | 52 (2.4%) | 44 (16.67%) | 8 (4.08%) |  < 0.001 |  |  |  |
Timing, n (%) | |||||||
 Pre coronary angiography | 47 (90.4%) | 43 (97.73%) | 4 (50%) | 0.001 | NA | NA | NA |
 Post coronary angiography | 5 (9.6%) | 1 (2.27%) | 4 (50%) | 0.001 | NA | NA | NA |
 Cardiogenic shock, n (%) | 82 (3.8%) | 57 (21.59%) | 25 (12.76%) | 0.014 | NA | NA | NA |
Timing, n (%) | |||||||
 Pre coronary angiography | 78 (95%) | 57 (100%) | 21 (84%) | 0.007 | NA | NA | NA |
 Post coronary angiography | 4 (5%) | 0 | 4 (16%) | 0.007 | NA | NA | NA |
Coronary presentation, n (%) | |||||||
 ST-elevation myocardial infarction | 389 (18.2%) | 214 (81.06%) | 175 (89.29%) | 0.016 | NA | NA | NA |
 Non-ST-elevation acute coronary syndrome | 1084 (50.7%) | 50 (18.93%) | 21 (10.71%) | 0.034 | 578 (60.33%) | 435 (60.41%) | 0.868 |
 Stable coronary artery disease | 273 (12.77%) | NA | NA | NA | 137 (14.32%) | 136 (18.89%) | 0.012 |
 Silent ischemia/others | 380 (17.78%) | NA | NA | NA | 234 (24.45%) | 146 (20.28%) | 0.043 |
 Left ventricular ejection fraction, mean (SD) | 44.8 ± 11.6 | 40 (35–45) | 50 (40–55) |  < 0.001 | 45 (35–55) | 50 (40–55) |  < 0.001 |
 LVEF ≤ 40%, n (%) | 578 (27.0%) | 98 (37.12%) | 33 (16.84%) |  < 0.001 | 291 (30.38%) | 156 (21.67%) |  < 0.001 |
 LVEF 41–49%, n (%) | 618 (28.91%) | 101 (38.26%) | 48 (24.49%) | 0.002 | 286 (29.85%) | 183 (25.42%) | 0.045 |
 LVEF ≥ 50%, n (%) | 942 (44.1%) | 65 (24.62%) | 115 (58.67%) |  < 0.001 | 381 (39.77%) | 381 (52.92%) |  < 0.001 |
 Creatinine clearance (ml/min), mean (SD) | 76.2 ± 24.2 | 90 (62–90) | 83 (65–90) | 0.016 | 90 (53–93) | 83 (70–90) | 0.002 |
 Hemoglobin (g/L), median (IQR) | 13.4 (12–14.6) | 13.4 (12.2–14.6) | 13 (11.5–14.5) | 0.012 | 13.6 (12.3–14.9) | 13.2 (11.7–14.3) |  < 0.001 |