Table 2 Per- and postoperative outcomes

Cardiopulmonary bypass^b

437 (87%)

157 (84%)

280 (89%)

Circulatory arrest^b

16 (3%)

5 (3%)

11 (3%)

Biological data

  Intraoperative

    Haematocrit during CPB^a

29 ± 5 || 29 (26–32)

28 ± 5 || 28(25–31)

29 ± 4 || 29(26–33)

  Postoperative (ICU)

    Immediate PO Hb (g dl⁻¹)^a

11.4 ± 1.4 || 11.4(10.5–12.4)

11.3 ± 1.5 || 11.2(10.2–12.3)

11.5 ± 1.4 || 11.5(10.7–12.4)

    Minimum ICU Hb (g dl⁻¹)^a

10.6 ± 6 || 10.1(9–11.2)

9.8 ± 1.5 || 9.6(8.9–10.9)

11 ± 7.6 || 10.4(9.1–11.5)

  Postoperative (surgical ward)

    Minimum Hb (g dl⁻¹)^a

10.1 ± 1.4 || 10(9–11.1)

9.8 ± 1.3 || 9.7(8.9–10.8)

10.2 ± 1.5 || 10.1(9.1–11.3)

    Discharge Hb (g dl⁻¹)^a

10.6 ± 1.4 || 10.5(9.5–11.5)

10.3 ± 1.3 || 10.2(9.3–11.3)

10.7 ± 1.4 || 10.8(9.7–11.7)

  Postoperative outcomes

    24 h bleeding (ml) *

547 ± 393 || 460(310–669)

507 ± 401 || 420(300–600)

570 ± 387 || 472(340–690)

    Haemostasis surgery within 24h^b

13 (3%)

5 (3%)

8 (3%)

    Postoperative infection^b

40 (8%)

18 (10%)

22 (7%)

    Postoperative AKF^b

57 (11%)

24 (13%)

33 (10%)

    Highest creatinine level (μmol l⁻¹)^a

96 ± 68 || 83(70–101)

91 ± 50 || 80(68–101)

99 ± 77 || 83(72–101)

    Length of stay in ICU (days)^a

3.6 ± 3.1 || 3(2–4)

3.8 ± 3.4 || 3(2–4)

3.4 ± 2.9 || 2.5(2–4)

    Death before day 28^b

7 (1%)

1 (1%)

6 (2%)

  Transfusion

    Whole hospital stay

(n = 495)

(n = 185)

(n = 310)

    All products transfusion^b

183 (37%)

78 (42%)

105 (33%)

    RBC (number of unit)^a

0.75 ± 1.6 || 0(0–1)

0.83 ± 1.9 || 0(0–2)

0.23 ± 0.5 || 0(0–0.33)

    RBC (proportion)^b

141 (28%)

58 (31%)

83 (26%)

  Intraoperative

    All products transfusion^b

118 (24%)

57 (31%)

61 (19%)

    RBC (number of unit)^a

0.34 ± 0.9 || 0(0–0)

0.46 ± 1.0 || 0(0–0)

0.26 ± 0.8 || 0(0–0)

    RBC (proportion)^b

81 (16%)

40 (22%)

41 (13%)

    Retransfusion (ml)^a

589 ± 350 || 522(433–715)

606 ± 387 || 541(437–737)

578 ± 327 || 514(432–710)

  ICU

    All products transfusion^b

88 (18%)

26 (14%)

62 (20%)

    RBC (number of unit)^a

0.36 ± 1.2 || 0(0–0)

0.27 ± 1.4 || 0(0–0)

0.41 ± 1.2 || 0(0–0)

    RBC (proportion)^b

73 (15%)

20 (11%)

53 (17%)

    Surgical department

(n = 495)

(n = 185)

(n = 310)

    RBC (number of unit)^a

0.09 ± 0.4 || 0(0–0)

0.12 ± 0.5 || 0(0–0)

0.08 ± 0.4 || 0(0–0)

    RBC (proportion)^b

25 (5%)

11 (6%)

14 (5%)