Table 2 The demographic and perioperative information in patients

Demographics

Gestational age (m)

39(38,40)

39(38,40)

38.6(38,40)

0.206

Age at surgery (m)

9.6(6.9,14.7)

9.7(6.9,15.2)

8.1(6.7,11.5)

0.04^*

Sex (M/F)

363/233

320/212

43/21

0.276

Weight (kg)

8.5(7.5,10.0)

8.7(7.5,10)

8(7,9.2)

0.019^*

Height (cm)

70(66,76)

70(66,76)

68.5(63.3,72.8)

0.026^*

BSA (m²)

0.39(0.35,0.43)

0.39(0.35,0.43)

0.37(0.33,0.41)

0.018^*

SpO₂ < 90%

325(54.4%)

276(51.9%)

49(76.6%)

< 0.001^*

ASA class > III

65(10.9%)

56(10.5%)

9(14.1%)

0.394

Concomitant cardiac defects

ASD, n (%)

63(10.6%)

56 (10.5%)

7 (10.9%)

0.919

PDA, n (%)

62(10.2%)

50 (9.4%)

12 (18.8%)

0.021^*

PFO, n (%)

168(28.2%)

155 (29.1%)

13 (20.3%)

0.138

PLSVC, n (%)

22(3.7%)

19 (3.6%)

3 (4.7%)

0.721

Blood-routine parameter

WCC (10⁹/L)

9.59(7.99,11.88)

9.67(8.01,11.91)

9.23(7.61,11.59)

0.237

ANC (10⁹/L)

2.40(1.73,3.53)

2.38 (1.72, 3.49)

2.62 (1.77, 3.90)

0.213

ALC (10⁹/L)

6.03(4.55,7.76)

6.07(4.62,7.83)

5.4(3.75,7.21)

0.019^*

AMC (10⁹/L)

0.57(0.44,0.74)

0.57 (0.44, 0.74)

0.57(0.45,0.74)

0.923

Hb (g/L)

13.0(11.3,14.6)

13.0(11.3,14.6)

12.9(10.8,14.7)

0.745

PLT (10⁹/L)

312(247,391)

314(253,390)

299(210,392)

0.113

Hb * SpO2 < aaHb

263(44.1%)

223(41.9%)

40(62.5%)

0.002^*

Intraoperative data

TAP/VS

114/482

90/442

24/40

< 0.001

CPB time (min)

98(83,122)

97(82,119)

114(94,141)

< 0.001^*

ACC time (min)

68(55,86)

67(55,85)

80(63,102)

< 0.001^*

T _min (℃)

30(28,30)

30 (28,30)

29 (28, 30)

0.005^*

Blood loss (ml)

30(20,40)

30 (20, 40)

30 (20, 50)

0.578

Transfusion of RBC (ml)

30(20,40)

30 (20, 40)

30 (20, 50)

0.277

Infusion volume (ml)

60(50,80)

60 (50, 80)

65 (50, 85)

0.242