Table 1.
Clinical characteristics at baseline
| Normal MVP group (n = 64) | Abnormal MVP group (n = 96) | P | |
|---|---|---|---|
| Age (years) | 60 ± 11 | 58 ± 14 | 0.275 |
| Male, n (%) | 48 (75.0) | 73 (76.0) | 0.880 |
| BMI (kg/m2) | 26.1 ± 3.6 | 25.2 ± 3.8 | 0.155 |
| Smoker, n (%) | 41 (64.1) | 54 (56.3) | 0.324 |
| Hypertension, n (%) | 46 (71.9) | 58 (60.4) | 0.137 |
| Diabetes, n (%) | 25 (39.1) | 33 (34.4) | 0.546 |
| Chronic kidney disease, n (%) | 11 (17.2) | 5 (5.2) | 0.013 |
| Previous myocardial infarction, n (%) | 4 (6.3) | 9 (9.4) | 0.478 |
| SBP at admission (mmHg) | 125 ± 20 | 115 ± 20 | 0.016 |
| DBP at admission (mmHg) | 78 ± 15 | 73 ± 13 | 0.071 |
| Heart rate at admission (bpm) | 79 ± 14 | 81 ± 20 | 0.627 |
| Killip classification I, n (%) | 59 (92.2) | 75 (78.1) | 0.018 |
| Symptom onset to balloon time (h) | 6.7 (3.7–46.0) | 6.2 (3.7–9.9) | 0.122 |
| Maximum troponin I (ng/ml) | 27.9 (12.7–80.0) | 75.1 (26.4–124.0) | 0.003 |
| CRP (mg/L) | 2.7 (0.5–12.2) | 8.2 (0.7–39.2) | 0.082 |
| BNP (pg/ml) | 186.5 (59.3–380.0) | 285.0 (91.0–635.0) | 0.058 |
| Serum creatinine (μmol/L) | 78.0 (66.0–103.5) | 81.0 (63.0–95.0) | 0.600 |
| Angiographic data | |||
| Three-vessel disease, n (%) | 38 (59.4) | 40 (41.7) | 0.028 |
| Final TIMI flow ≤ 2, n (%) | 5 (7.9) | 23 (25.0) | 0.007 |
| LAD STEMI, n (%) | 25 (39.1) | 67 (69.8) | 0.000 |
| RCA STEMI, n (%) | 33 (51.6) | 18 (18.8) | 0.000 |
| LCx STEMI, n (%) | 6 (9.4) | 11 (11.5) | 0.675 |
BMI body mass index, BNP brain natriuretic peptide, CRP C-reactive protein, DBP diastolic blood pressure, LAD left anterior descending, LCx left circumflex artery, MVP microvascular perfusion, RCA right coronary artery, SBP systolic blood pressure, STEMI ST-segment elevation myocardial infarction, TIMI thrombolysis in myocardial infarction