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Table 4 Clinical characteristics of patients with cTnT peak value ≤ 0.34 mg/l vs. cTnT peak value > 0.34 mg/l

From: Effects of peak time of myocardial injury biomarkers on mid-term outcomes of patients undergoing OPCABG

Variables

Group III (n = 424)

Group IV (n = 140)

P

Male sex (n, %)

341 (80.4)

102 (72.9)

0.059

Age (y)

65.40 ± 8.20

64.99 ± 8.21

0.608

Weight (kg)

70.33 ± 10.51

69.18 ± 10.02

0.255

Height (cm)

166.92 ± 6.68

166.48 ± 7.03

0.502

BMI (kg/m2)

25.21 ± 3.25

24.92 ± 2.96

0.351

BSA (m2)

1.77 ± 0.16

1.75 ± 0.16

0.256

Types of CAD

  

0.127

 Unstable angina pectoris (n, %)

250 (59.0)

82 (58.6)

 

 Acute myocardial infarction (n, %)

50 (11.8)

25 (17.9)

 

 Stable angina pectoris (n, %)

124 (29.2)

33 (23.6)

 

Diabetes mellitus (n, %)

155 (36.6)

46 (32..9)

0.428

Hypertension (n, %)

302 (71.2)

111 (79.3)

0.062

Cerebrovascular disease

  

0.525

 Stroke (n, %)

16 (3.8)

6 (4.3)

 

 Lacunar infarction (n, %)

111 (26.2)

30 (21.4)

 

Peripheral vascular disease (n, %)

8 (1.9)

5 (3.6)

0.249

Preoperative atrial fibrillation (n, %)

12 (2.8)

3 (2.1)

0.661

Pulmonary hypertension (n, %)

7 (1.7)

5 (3.6)

0.172

Serum creatinine (μmol/l)

80.83 ± 19.83

87.59 ± 34.83

0.005

Ccr (ml/min/1.73 m2)

81.58 ± 24.74

76.39 ± 25.81

0.034

Renal failure (n, %)

2 (0.5)

2 (1.4)

0.242

LVEF (%)

  

0.867

 LVEF ≥ 45% (n, %)

413 (97.4)

136 (97.1)

 

 LVEF < 45% (n, %)

11 (2.6)

4 (2.9)

 

Triple vessel disease (n, %)

379 (89.4)

126 (90.0)

0.837

COPD (n, %)

7 (1.7)

2 (1.4)

0.856

Previous PCI (n, %)

2 (0.5)

0 (0)

0.416

NYHA

  

0.673

 I (n, %)

25 (5.9)

5 (3.6)

 

 II (n, %)

308 (72.6)

107 (76.4)

 

 III (n, %)

86 (20.3)

27 (19.3)

 

 IV (n, %)

5 (1.2)

1 (0.7)

 

EuroSCORE II

1.75 ± 0.94

1.92 ± 1.02

0.075

Operating time (min)

263.00 ± 59.08

282.96 ± 75.44

0.001

Number of bypass grafts (n)

3.68 ± 1.11

3.76 ± 0.97

0.446

Number of arterial grafts (n)

1.44 ± 0.87

1.35 ± 0.80

0.274

Number of venous grafts (n)

2.22 ± 1.12

2.44 ± 1.09

0.044

Total artery bypass grafting (n, %)

36 (8.5)

6 (4.3)

0.100

Total vein bypass grafting (n, %)

22 (5.2)

13 (9.3)

0.081

Peak of CK-MB (mg/l)

18.00 (13.50, 25.00)

41.00 (28.30, 69.85)

 < 0.001

Peak of cTnT (mg/l)

0.11 (0.10, 0.18)

0.73 (0.44, 1.12)

 < 0.001

CK-MB peak occurrencewithin 24 h (n, %)

272 (64.2)

114 (78.6)

0.002

CK-MB peak value > 32.00 mg/l (n, %)

47 (11.1)

92 (65.7)

 < 0.001

Follow-up time (month)

75.75 (60.63, 93.34)

75.45 (46.05, 95.33)

0.578

Mid-term mortality (n, %)

37 (8.7)

23 (16.4)

0.010

  1. cTnT cardiac troponin T, BMI body mass index, BSA body surface area, Cr creatinine, Ccr creatinine clearance rate, COPD chronic obstructive pulmonary disease, PCI percutaneous coronary intervention, CAD coronary artery disease, NYHA New York Heart Association, LVEF left ventricular ejection fraction, EuroSCORE II European system for cardiac operative risk evaluation II
  2. Group III: Peak of postoperative cTnT ≤ 0.34 mg/l; Group IV: Peak of postoperative cTnT > 0.34 mg/l