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Table 2 Baseline characteristics of patients according to C-ACS-RS group

From: N-terminal pro-brain natriuretic peptide improves the C-ACS risk score prediction of clinical outcomes in patients with ST-elevation myocardial infarction

Variables 0 (n = 266) 1 (n = 217) 2 (n = 95) ≥3 (n = 11) P value
Demographics
 Age, years 58.32 ± 9.84 64.41 ± 11.93 71.08 ± 11.22 77.55 ± 6.31 <0.001
 Age ≥ 75 years, n (%) 0 (0.0%) 46 (21.2%) 45 (47.4%) 8 (72.7%) <0.001
 Female, n (%) 34 (12.8%) 41 (18.9%) 20 (21.1%) 1 (9.1%) 0.140
 Systolic BP (mmHg) 125.36 ± 16.16 117.79 ± 21.45 113.28 ± 29.40 98.30 ± 27.75 <0.001
 Diastolic BP (mmHg) 76.22 ± 40.09 71.02 ± 14.00 67.00 ± 16.34 59.70 ± 14.49 0.028
 Heart rate (beat/min) 76.88 ± 11.23 79.77 ± 16.92 85.70 ± 24.54 86.70 ± 18.56 <0.001
Medical history, n (%)
 Diabetes 56 (21.1%) 48 (22.1%) 19 (20.0%) 4 (36.4%) 0.760
 Previous myocardial infarction 12 (4.5%) 14 (6.5%) 5 (5.3%) 2 (18.2%) 0.240
 Coronary artery bypass graft 11 (4.1%) 6 (2.8%) 10(10.5%) 2(18.2%) 0.005
 Hypertension 135 (50.8%) 121 (55.8%) 56 (58.9%) 8 (72.7%) 0.276
 Smoking 138 (51.9%) 102 (47.0%) 43 (45.3%) 5 (45.5%) 0.612
 Anemia 78 (29.3%) 45 (20.7%) 16 (16.8%) 2 (18.2%) 0.040
Laboratory findings
 NT-pro-BNP, pg/mL(Median) 851.15 1506.00 2414.00 2330.00 <0.001
 Lg NT-pro-BNP, pg/mL 6.61 ± 1.27 7.28 ± 1.23 7.81 ± 1.26 7.85 ± 1.46 <0.001
 Pre-procedural SCr (μmol/L) 91.24 ± 44.05 101.04 ± 39.58 111.49 ± 52.16 171.92 ± 147.90 <0.001
 eGFR, mL/min/1.73 m2 90.59 ± 94.56 78.16 ± 38.82 66.34 ± 21.50 50.97 ± 26.01 0.008
 LVEF, % 55.54 ± 10.42 53.54 ± 10.31 49.04 ± 10.85 51.67 ± 14.62 <0.001
 Hemoglobin (g/L) 135.33 ± 16.32 131.13 ± 17.97 127.39 ± 17.10 132.52 ± 18.79 <0.001
 Hemoglobin A1c (%) 6.47 ± 1.36 6.62 ± 1.74 6.30 ± 1.39 6.44 ± 0.64 0.554
 Serum albumin (g/L) 34.47 ± 5.24 32.71 ± 4.30 31.58 ± 4.47 31.27 ± 4.85 <0.001
 Uric acid (μmol/L) 358.13 ± 93.3 377.69 ± 124.2 380.06 ± 117.7 393.11 ± 79.9 0.265
Procedural characteristic
 Contrast volume (mL) 132.80 ± 53.81 132.92 ± 53.00 144.29 ± 43.39 187.50 ± 81.32 0.291
 Contrast exposure time (min) 78.89 ± 42.27 82.52 ± 37.72 92.02 ± 42.80 80.00 ± 49.50 0.347
 Number of diseased vessels (n) 1.99 ± 1.17 2.08 ± 0.90 2.26 ± 0.94 2.00 ± 0.77 0.197
 Number of stents (n) 1.36 ± 0.82 1.40 ± 0.77 1.49 ± 0.84 1.36 ± 0.50 0.587
 Total length of stent (mm) 37.04 ± 26.47 35.61 ± 23.55 37.05 ± 24.60 24.00 ± 8.49 0.871
  1. Abbreviation: C-ACS-RS Canada Acute Coronary Syndrome risk score, NT-pro-BNP N-terminal-pro-brain natriuretic peptide, SCr serum creatinine, eGFR estimated glomerular filtration rate, LVEF left ventricular ejected function