Table 2.
Severity of Illness
| Variables | Urgent (n = 1,734) | Emergent (n = 3,339) | Salvage (n = 422) | p Value |
|---|---|---|---|---|
| Age, years | 66.0 (58.0–74.0) | 65.0 (58.0–74.0) | 65.0 (56.0–73.0) | 0.0578 |
| Sex | ||||
| Male | 1,294 (74.6) | 2,344 (70.2) | 301 (71.3) | 0.0036 |
| Female | 438 (25.3) | 993 (29.7) | 121 (28.7) | |
| Timing of MI | ||||
| 1–7 days | 1,437 (82.9) | 929 (27.8) | 73 (17.3) | <0.0001 |
| 6–24 hours | 235 (13.6) | 995 (29.8) | 76 (18.0) | |
| ≤6 hours | 62 (3.6) | 1,415 (42.4) | 273 (64.7) | |
| Left main disease ≥50% | 826 (47.6) | 1,761 (52.7) | 228 (54.0) | 0.0011 |
| Diseased vessels | ||||
| None | 2 (0.1) | 5 (0.1) | 3 (0.7) | <0.0001 |
| One | 31 (1.8) | 168 (5.0) | 28 (6.6) | |
| Two | 218 (12.6) | 646 (19.3) | 91 (21.6) | |
| Three | 1,482 (85.5) | 2,519 (75.4) | 299 (70.9) | |
| Resuscitation | 280 (16.1) | 550 (16.5) | 413 (97.9) | <0.0001 |
| Arrhythmia typea | 344 (59.4) | 729 (64.7) | 240 (85.7) | <0.0001 |
| LVEF | 35.0 (25.0–47.0) | 35.0 (25.0–48.0) | 35.0 (20.0–50.0) | 0.1920 |
| INR | 1.1 (1.0–1.2) | 1.1 (1.0–1.2) | 1.1 (1.0–1.3) | 0.0092 |
| Total bilirubin | 0.7 (0.5–0.9) | 0.6 (0.4–0.9) | 0.6 (0.4–0.8) | <0.0001 |
| Creatinine, mg/dL | 1.0 (0.8–1.3) | 1.1 (0.9–1.4) | 1.1 (0.9–1.5) | <0.0001 |
| Predicted risk of mortality | ||||
| <4% | 564 (32.5) | 146 (4.4) | 0 (0.0) | <0.0001 |
| ≥4% and <8% | 460 (26.5) | 656 (19.6) | 9 (2.1) | |
| ≥8% and <12% | 239 (13.8) | 589 (17.6) | 28 (6.6) | |
| ≥12% and <16% | 140 (8.1) | 410 (12.3) | 49 (11.6) | |
| ≥16% and <20% | 112 (6.5) | 350 (10.5) | 43 (10.2) | |
| ≥20% | 208 (12.0) | 1,165 (34.9) | 289 (68.5) | |
a
Ventricular tachycardia/ventricular fibrillation (among patients with arrhythmia).
Values are median (interquartile range) or n (%).
INR = international normalized ratio; LVEF = left ventricular ejection fraction; MI = myocardial infarction.