Table 2 Off pump versus on pump cardiac surgery

Haemodynamic/metabolic

Temperature, °C

36.5 (35.6–37.2)

35.7 (34.5–36.5)

0.008

HR,·min^-1

74 (57–87)

72 (55–101)

MAP, mm Hg

70 (57–104)

75 (52–104)

CVP, mm Hg

3 (1–7)

5 (0–12)

PCWP, mm Hg

6 (5–7)

7 (1–13)

MPAP, mm Hg

13 (11–28)

15 (8–23)

CI, L·min^-1·m^-2

3.9 (2.7–4.8)

2.8 (2.1–4.3)

0.008

GEDVI, mL·m^-2

970 (620–1131)

783 (537–1180)

ITBVI, mL·m^-2

1180 (767–1342)

1019 (641–1498)

DO₂, L·min^-1·m^-2

503 (385–576)

391 (229–546)

0.008

VO₂, L·min^-1·m^-2

117 (78–192)

120 (26–189)

Lactate, mmol/L

0.9 (0.6–1.2)

1.4 (0.7–4.1)

<0.0001

COP, mm Hg

19 (16–25)

19 (15–24)

Haemoglobin, mmol/L

5.5 (4.9–7.1)

5.9 (4.3–7.4)

Haematocrit

0.25 (0.23–0.32)

0.28 (0.20–0.33)

Pulmonary

PLI, × 10^-3·min^-1

18 (13–27)

14 (6–73)

Supranormal PLI

5 (63)

13 (42)

EVLW, mL·kg^-1

6.7 (4.8–9.7)

5.9 (2.1–20.0)

Supranormal EVLW

3 (37)

9 (29)

V_t, mL

580 (400–660)

550 (395–1110)

P_plat, cm H₂O

17(14–19)

17 (13–33)

PEEP, cm H₂O

6 (5–10)

7 (4–16)

Compliance_{tot,respir,dyn}, cm H₂O·mL^-1

64 (40–83)

50 (37–91)

P_aO₂, mm Hg

128 (98–176)

119 (84–189)

P_aO₂/F_IO₂

299 (251–463)

280 (140–485)

S_aO₂

0.98 (0.98–0.99)

0.98 (0.96–0.99)

S_vO₂

0.77 (0.69–0.81)

0.73 (0.61–0.95)

0.030

Venous admixture, %

17 (9–21)

16 (5–62)

Quadrants on X-ray with densities

0 (0–1)

0 (0–3)

Atelectasis

5 (63)

16 (52)

Lung injury score

0.7 (0.2–1.2)

1.0 (0.2–2.7)

Duration MV, h

11 (6–23)

11 (5–494)