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Table 1 Baseline characteristics and surgical data

From: Effect of ventilation strategy during cardiopulmonary bypass on postoperative pulmonary complications after cardiac surgery: a randomized clinical trial

 

NoV (n = 138)

LOV (n = 138)

HOV (n = 137)

P value

Age (year)

53 (46–61)

52 (45–63)

52 (46–61)

0.796

Gender (M/F), n

62/76

64/74

67/70

0.800

Smoking, n (%)

31 (22.5)

30 (21.7)

31 (22.6)

0.982

BMI

23.1 (20.7–25.2)

22.6 (20.7–25.1)

23.2 (20.9–25.1)

0.650

ASA III, n (%)

134 (97.1)

137 (99.3)

136 (99.3)

0.339

EuroScore II

1.07 (0.84–1.39)

1.07 (0.86–1.51)

1.02 (0.86–1.35)

0.683

Preoperative OI

385 (376–404)

385 (365–404)

385 (371–409)

0.485

Comorbidities, n (%)

 COPD

3 (2.2)

6 (4.3)

5 (3.6)

0.629

 Hypertension

23 (16.7)

18 (13.0)

22 (16.1)

0.669

 Diabetes

5 (3.6)

7 (5.1)

12 (8.8)

0.172

 Prior stroke

3 (2.2)

3 (2.2)

5 (3.6)

0.693

Surgical type, n (%)

 Valve replacement/repair

116 (84.1)

113 (81.9)

120 (87.6)

0.419

 CABG

11 (8.0)

11 (8.0)

9 (6.6)

0.878

 Repair of structural defect

16 (11.6)

23 (16.7)

17 (12.4)

0.418

 Resection of a cardiac tumour

1 (0.7)

3 (2.2)

3 (2.2)

0.643

Anesthetics administration

 Sufentanil (ug/kg)

2.7(2.2–3.5)

3.3(2.6–4.1)

2.9(2.5–3.9)

0.661

 Cisatracurium (mg/kg)

0.6(0.5–0.8)

0.7(0.5–0.9)

0.7(0.4–0.8)

0.856

 Duration of surgery (min)

235 (196–291)

240 (203–280)

245 (210–286)

0.851

 Duration of CPB (min)

116 (93–140)

117 (95–155)

123 (90–154)

0.737

 Duration of ACC (min)

77 (65–105)

83 (60–110)

83 (60–113)

0.661

 ACC ≥ 90 min, n (%)

62 (44.9)

50 (36.2)

60 (43.8)

0.281

 Application of NIV in ICU, n (%)

51 (36.9%)

64 (46.4%)

47 (34.3%)

0.098

 Intraoperative infusion (L)

1.2 (1.0–1.4)

1.2 (1.0–1.5)

1.2 (0.9–1.5)

0.532

 Allogeneic RBC (u)

2 (0–6)

2 (0–8)

1 (0–8)

0.121

  1. BMI body mass index, ASA American society of anesthesiologists, OI oxygenation index, COPD chronic obstructive pulmonary disease, CABG coronary artery bypass graft, CPB cardiopulmonary bypass, ACC aortic crossclamp, NIV non-invasive ventilator, ICU intensive care unit, RBC: red blood cells