Table 1.
Baseline characteristics.
| Variables | All patients (n = 1095) | MACE (n = 78) | No MACE (n = 1015) | p value |
|---|---|---|---|---|
| Age (years) | 64 (53–72) | 72 (61–77.25) | 63 (52–72) | < 0.001* |
| Sex (male) | 820/1095 (74.9) | 52/78 (66.7) | 767/1015 (75.6) | 0.081 |
| Cardiovascular risks factors | ||||
| Active smoking | 443/1015 (43.6) | 22/71 (31.0) | 420/1015 (41.4) | 0.026* |
| Hypertension | 778/1093 (71.2) | 65/78 (83.3) | 711/1013 (70.2) | 0.014* |
| Hyperlipoproteinemia | 414/1087 (38.1) | 27/78 (34.6) | 386/1007 (38.3) | 0.515 |
| Diabetes mellitus | 259/1092 (23.7) | 28/78 (35.9) | 230/1012 (22.7) | 0.008* |
| Body mass index (kg/m2) | 27.45 (24.95–30.35) | 27.34 (25.27–31.04) | 27.45 (24.91–30.2) | 0.685 |
| Previous Myocardial infarction | 73/1093 (6.7) | 5/78 (6.4) | 67/1013 (6.6) | 0.944 |
| ST-segment elevation | 759/1095 (69.31) | 52/78 (66.7) | 707/1015 (69.7) | 0.581 |
| Time symptoms to balloon, *min | 180 (110–316) | 192 (115.75–372.75) | 180 (110–310) | 0.344 |
| Door-to-balloon time, *min | 30 (22–42) | 27.5 (22.5–39.5) | 30 (22–42) | 0.429 |
| Killip class on admission | < 0.001* | |||
| 1 | 967/1095 (88.3) | 50/78 (64.1) | 915/1015 (90.1) | |
| 2 | 88/1095 (8) | 18/78 (23.1) | 70/1015 (6.9) | |
| 3 | 23/1095 (2.1) | 5/78 (6.4) | 18/1015 (1.8) | |
| 4 | 17/1095 (1.6) | 5/78 (6.4) | 12/1015 (1.2) | |
| Diseased vessels | 0.010* | |||
| 1 | 546/1095 (49.9) | 28/78 (35.9) | 517/1015 (50.9) | |
| 2 | 327/1095 (29.9) | 25/78 (32.1) | 302/1015 (29.8) | |
| 3 | 222/1095 (20.3) | 25/78 (32.1) | 196/1015 (19.3) | |
| Affected artery | 0.134 | |||
| Left anterior descending | 450/1095 (41.1) | 41/78 (52.6) | 409/1015 (40.3) | |
| Left circumflex | 227/1095 (20.7) | 15/78 (19.2) | 210/1015 (20.7) | |
| Left main | 6/1095 (0.5) | 1/78 (1.3) | 5/1015 (0.5) | |
| Right coronary artery | 405/1095 (37) | 20/78 (25.6) | 385/1015 (37.9) | |
| Bypass graft | 7/1095 (0.6) | 1/78 (1.3) | 6/1015 (0.6) | |
| TIMI flow grade before PCI | 0.604 | |||
| 0 | 551/1095 (50.3) | 44/78 (56.4) | 506/1015 (49.9) | |
| 1 | 126/1095 (11.5) | 6/78 (7.7) | 120/1015 (11.8) | |
| 2 | 218/1095 (19.9) | 14/78 (17.9) | 203/1015 (20) | |
| 3 | 200/1095 (18.3) | 14/78 (17.9) | 186/1015 (18.3) | |
| Stent implanted | 1068/1095 (97.5) | 76/78 (97.4) | 990/1015 (97.5) | 0.661 |
| TIMI flow grade after PCI | 0.177 | |||
| 0 | 21/1095 (1.9) | 1/78 (1.3) | 20/1015 (2) | |
| 1 | 23/1095 (2.1) | 4/78 (5.1) | 19/1015 (1.9) | |
| 2 | 82/1095 (7.5) | 8/78 (10.3) | 74/1015 (7.3) | |
| 3 | 969/1095 (88.5) | 65/78 (83.3) | 902/1015 (88.9) | |
| Time to MRI, days | 3 (2–4) | 3 (2–4) | 3 (2–4) | 0.022* |
Patient data are represented either by n/N (%) or median (interquartile range). P values compare the variables with the occurrence of MACE. Two patients were lost to follow up (MACE).
PCI, Percutaneous coronary intervention; MACE, major adverse cardiac event; TIMI, Thrombolysis in myocardial infarction.
*Indicates statistical significance. Mann–Whitney U test was performed for continuous variables and Chi-square test was performed for categorical variables.