Table 1 Clinical characteristics of the study patients stratified according to 30-day mortality.

From: Usefulness of the delta neutrophil index to predict 30-day mortality in patients with ST segment elevation myocardial infarction

Variable

Total (N = 842)

30-day mortality

Survival (N = 757)

Death (N = 85)

p-value

Male sex (N, %)

667 (79.22)

610 (80.58)

57 (67.06)

0.004*

Body mass index (kg/m²)

24.20 ± 3.45

24.26 ± 3.41

23.69 ± 3.76

0.154

Use of LMWH (N, %)

18 (2.14)

17 (2.25)

1 (1.18)

0.999

Use of unfractionated heparin (N, %)

836 (99.29)

754 (99.60)

82 (96.47)

0.016*

GRACE score (point)

169.70 ± 46.75

163.47 ± 43.55

225.20 ± 36.64

<0.001*

Age (years)

63.39 ± 13.24

62.49 ± 13.18

71.42 ± 10.96

<0.001*

Heart rate (/min)

81.06 ± 26.41

80.98 ± 23.88

81.85 ± 43.04

0.855

SBP (mmHg)

126.57 ± 38.71

130.03 ± 35.60

95.68 ± 50.24

<0.001*

Creatinine (mg/dL)

1.24 ± 1.22

1.19 ± 1.14

1.74 ± 1.71

0.005*

Troponin-T (pg/mL)

673.02 ± 1650.60

536.57 ± 1366.20

1886.62 ± 2968.29

<0.001*

Arrest on admission (N, %)

22 (2.61)

10 (1.32)

12 (14.12)

<0.001*

Killip class

   

<0.001*

I (N, %)

380 (45.13)

369 (48.75)

11 (12.94)

 

II (N, %)

164 (19.48)

159 (21.00)

5 (5.88)

 

III (N, %)

125 (14.85)

101 (13.34)

24 (28.24)

 

IV (N, %)

173 (20.55)

128 (16.91)

45 (52.94)

 

Clinical measurements

LVEF (%)

45.26 ± 12.31

46.98 ± 11.01

29.58 ± 12.52

<0.001*

NT-proBNP (pg/mL)

3123.6 ± 8133.8

2459.9 ± 7140.7

9029.6 ± 12815.3

<0.001*

Creatine kinase-MB (ng/mL)

28.53 ± 67.43

24.62 ± 58.07

63.32 ± 117.52

0.004*

White blood cell count (10^3/μL)

11.47 ± 4.03

11.36 ± 3.93

12.43 ± 4.74

0.049*

Neutrophil ratio (%)

65.04 ± 17.05

64.79 ± 16.74

67.28 ± 19.59

0.262

hs-CRP (mg/L)

25.10 ± 54.34

24.26 ± 54.82

33.19 ± 49.17

0.173

aPTT (s)

35.64 ± 28.79

35.00 ± 27.60

41.28 ± 37.47

0.137

Platelets (10^3/μL)

244.31 ± 81.84

246.15 ± 80.56

227.94 ± 91.33

0.052

Total cholesterol (mg/dL)

186.16 ± 47.58

187.99 ± 47.51

169.90 ± 45.29

<0.001*

Triglyceride (mg/dL)

115.63 ± 103.35

117.23 ± 106.26

97.88 ± 60.35

0.022*

Glucose (mg/dL)

196.38 ± 94.15

190.34 ± 88.76

250.26 ± 120.70

<0.001*

Medical History

Hypertension (N, %)

434 (51.54)

388 (51.25)

46 (54.12)

0.617

Diabetes mellitus (N, %)

232 (27.59)

199 (26.32)

33 (38.82)

0.015*

COPD (N, %)

17 (2.02)

15 (1.98)

2 (2.35)

0.686

Hyperlipidaemia (N, %)

94 (11.16)

89 (11.76)

5 (5.88)

0.103

History of PCI (N, %)

106 (12.59)

96 (12.68)

10 (11.76)

0.809

CAOD (N, %)

145 (17.22)

124 (16.38)

21 (24.71)

0.054

Heart failure (N, %)

21 (2.49)

18 (2.38)

3 (3.53)

0.461

Arrhythmia (N, %)

20 (2.38)

19 (2.51)

1 (1.18)

0.711

Stroke (N, %)

43 (5.11)

31 (4.10)

12 (14.12)

<0.001*

PAOD (N, %)

11 (1.31)

9 (1.19)

2 (2.35)

0.307

Malignancy (N, %)

46 (5.46)

37 (4.89)

9 (10.59)

0.041*

Chronic kidney disease (N, %)

44 (5.23)

35 (4.62)

9 (10.59)

0.034*

Chronic liver disease (N, %)

7 (0.83)

6 (0.79)

1 (1.18)

0.527

Procedural characteristics

Door-to-balloon time (min)

64.62 ± 32.55

63.39 ± 31.68

75.51 ± 37.99

0.006*

Procedure time (min)

40.50 ± 20.44

39.62 ± 19.97

48.31 ± 22.94

<0.001*

Type of contrast medium

   

0.217

Iopamidol (N, %)

198 (23.52)

177 (23.38)

21 (24.71)

 

Iodixanol (N, %)

642 (76.25)

579 (76.49)

63 (74.12)

 

Iopromide (N, %)

2 (0.24)

1 (0.13)

1 (1.18)

 

Contrast volume (mL)

192.74 ± 76.01

193.32 ± 76.04

187.65 ± 76.01

0.515

Multivessel disease (N, %)

515 (61.16)

452 (59.71)

63 (74.12)

0.01*

LM involvement (N, %)

38 (4.51)

28 (3.70)

10 (11.76)

0.003*

DNI Time-0 (%)

0.78 ± 1.79

0.68 ± 1.58

1.66 ± 2.99

0.004*

DNI Time-I (%)

2.23 ± 5.24

1.30 ± 2.52

10.84 ± 11.96

<0.001*

DNI Time-24 (%)

2.47 ± 6.82

1.33 ± 2.58

15.65 ± 17.98

<0.001*

  1. LMWH, low molecular weight heparin; GRACE, Global Registry of Acute Coronary Events; SBP, systolic blood pressure; LVEF, left ventricular ejection fraction; NT-proBNP, N-terminal pro-brain natriuretic peptide; hs-CRP, high-sensitivity C-reactive protein; aPTT, activated partial thromboplastin time; COPD, chronic obstructive pulmonary disease; PCI, Percutaneous Coronary Intervention; CAOD, coronary artery occlusive disease; PAOD, peripheral arterial occlusive disease; LM, left main coronary artery; DNI, delta neutrophil index. Data are expressed as the mean ± standard deviation or number (percentage). *P < 0.05.