Table 1 Baseline characteristics of the NR study population (n = 854)
Variable | Normal blood flow (n = 755) | NR (n = 99) | p-value |
|---|---|---|---|
Age (years) | 60.34 (13.27) | 62.79 (13.88) | 0.086 |
Male (n (%)) | 628 (83.2) | 74 (74.7) | 0.039 |
Hypertension (n (%)) | 345 (45.7) | 38 (38.4) | 0.169 |
Diabetes (n (%)) | 124 (16.4) | 12 (12.1) | 0.271 |
Smoke (n (%)) | 377 (49.9) | 34 (34.3) | 0.004 |
Angina pectoris (n (%)) | 41 (5.4) | 7 (7.1) | 0.505 |
Previous PCI (n (%)) | 19 (2.5) | 5 (5.1) | 0.267 |
Anterior wall MI (n(%)) | 391 (51.8) | 48 (48.5) | 0.536 |
Cardiac troponin I (normalized) | 0.47 (0.33) | 0.67 (0.31) |  < 0.001 |
creatine kinase-MB (normalized) | 0.13 (0.13) | 0.22 (0.17) |  < 0.001 |
hs-CRP (normalized) | 0.34 (0.33) | 0.50 (0.39) |  < 0.001 |
Hemoglobin (g/L) | 137.65 (19.28) | 133.90 (19.60) | 0.07 |
WBC count (109/L) | 11.50 (3.94) | 12.40 (3.78) | 0.033 |
Creatinine (μmol/L) | 89.68 (43.15) | 99.38 (45.22) | 0.037 |
Uric acid (μmol/L) | 385.33 (118.53) | 407.30 (135.37) | 0.089 |
Albumin (g/L) | 38.72 (4.37) | 38.43 (4.91) | 0.544 |
Glucose (mmol/L) | 7.31 (3.44) | 7.52 (2.84) | 0.577 |
LDL-C (mmol/L) | 3.28 (1.05) | 3.12 (0.97) | 0.156 |
HDL-C (mmol/L) | 1.20 (0.44) | 1.15 (0.32) | 0.351 |
Triglyceride (mmol/L) | 1.65 (1.13) | 1.60 (1.25) | 0.734 |
Total cholesterol (mmol/L) | 5.01 (1.24) | 4.89 (1.26) | 0.347 |
Fibrinogen (g/L) | 3.65 (1.08) | 3.63 (1.24) | 0.862 |
Shock (%) | 13 (1.7) | 7 (7.1) | 0.003 |
Malignant arrhythmia (n (%)) | 90 (11.9) | 18 (18.2) | 0.078 |
Killip class (n (%)) | |||
 I | 610 (80.8) | 64 (64.6) |  < 0.001 |
 II | 83 (11.0) | 15 (15.2) | 0.222 |
 III | 15 (2.0) | 3 (3.0) | 0.758 |
 IV | 47 (6.2) | 17 (17.2) |  < 0.001 |
LVEF (%) | 57.97 (9.15) | 54.30 (10.16) |  < 0.001 |
Total ischemia time (h) | 4.85 (3.51) | 6.29 (5.61) |  < 0.001 |
SO-to-FMC (min) | 157.21 (166.20) | 262.06 (290.03) |  < 0.001 |
Door-to balloon (min) | 85.68 (49.34) | 88.53 (54.05) | 0.594 |
Baseline TIMI flow | |||
 0 | 581 (77.0) | 90 (90.9) | 0.001 |
 1 | 38 (5.0) | 5 (5.1) | 1.0 |
 2 | 77 (10.2) | 1 (1.0) | 0.003 |
 3 | 59 (7.8) | 3 (3.0) | 0.085 |
Criminal blood vessels (n (%)) | |||
 LAD | 431 (57.3) | 49 (49.5) | 0.140 |
 LCX | 56(7.4) | 8 (8.1) | 0.814 |
 RCA | 263 (34.8) | 41 (41.4) | 0.199 |
 LM | 5 (0.7) | 1 (1.0) | 0.524 |
Double or multiple lesions (n (%)) | 501 (66.4) | 78 (78.8) | 0.013 |
Post dilatation (n (%)) | 446 (59.1) | 56 (56.6) | 0.634 |
Thrombus aspiration (n (%)) | 84 (11.1) | 29 (29.3) |  < 0.001 |
Stent diameter (mm) | 3.14 (0.43) | 3.14 (0.40) | 0.895 |
Stent length (mm) | 33.94 (17.25) | 41.57 (18.78) |  < 0.001 |