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Table 1 Association of preoperative hemoglobin with postoperative outcomes in patients

From: Effect of hemoglobin and oxygen saturation on adverse outcomes in children with tetralogy of fallot: a retrospective observational study

Adverse Outcomes

Hb < aaHb

(n = 152)

Hb ≥ aaHb

(n = 444)

P

Hb * SpO2 < aaHb

(n = 263)

Hb * SpO2 ≥ aaHb

(n = 333)

P

Death

1(0.7%)

1(0.2%)

> 0.999

3(1.1%)

1(0.3%)

0.326

ECMO placement

1(0.7%)

2(0.5%)

> 0.999

2(0.8%)

1(0.3%)

0.586

ICU > 30d

1(0.7%)

5(1.1%)

> 0.999

1(0.4%)

5(1.5%)

0.236

Extubation failure

8(5.3%)

18(4.15%)

0.498

16(6.1%)

10(3%)

0.072

Thromboembolic events

2(1.3%)

6(1.4%)

> 0.999

3(1.1%)

5(1.5%)

> 0.999

Significant cardiac disorders

5(3.3%)

7(1.6%)

0.194

8(3%)

4(1.2%)

0.112

Severe renal failure

3(2%)

14(3.2%)

0.58

11(4.2%)

6(1.8%)

0.09

Adverse outcomes

21(13.8%)

43(9.7%)

0.172

40(15.2%)

24(7.2%)

0.002*

  1. Variables are expressed as frequency (percentage). ECMO, Extracorporeal Membrane Oxygenation; ICU, intensive care unit