Table 1 Haemodynamic and respiratory variables at different time points

HR (minute ^-1 )

55 ± 2

56 ± 3

P P = 0.45

80 ± 3^§

82 ± 2^§

P P = 0.33

MAP (mmHg)

83 ± 17

76 ± 12

P <0.05

68 ± 7^§

67 ± 5^§

P = 0.98

CVP (mmHg)

10 ± 2

11 ± 2

P = 0.54

9 ± 1

11 ± 1

P 0 = 0.10

Lung compliance (mL/cmH ₂ O)

51 ± 2

53 ± 1

P = 0.22

50 ± 2

49 ± 2

P = 0.67

Tidal volume (mL)

675 ± 75

686 ± 69

P = 0.15

700 ± 72

695 ± 70

P = 0.39

SVRI (dynes∙s/cm⁵/m²)

2,712 ± 68

2,096 ± 327

P <0.05

1,659 ± 141^§

1 729 ± 138^§

P = 0.11

CI _PPnon-cal. (L/minute/m ² )

2.5 ± 0.7

3.4 ± 0.2 *

CI _PPcal. (L/minute/m ² )

2.6 ± 0.2

3.2 ± 0.1^#

CI _TPTD (L/minute/m ² )

2.3 ± 0.1

2.4 ± 0.1

P = 0.17

3.3 ± 0.2^§

3.3 ± 0.2^§

P = 0.55