Table 2 Baseline Hemodynamic and Respiratory Characteristics of Fluid Responders and Nonresponders

Norepinephrine dose (μg.kg⁻¹.min⁻¹)

0.55 ± 0.39

0.61 ± 0.41

0.45 ± 0.35

0.08

Heart rate (min⁻¹)

112 ± 16

110 ± 18

116 ± 14

0.06

MAP (mm Hg)

76 ± 16

75 ± 16

78 ± 16

0.39

PPV (%)^a

7.6 ± 3.1

6.7 ± 3.1

8.8 ± 2.7

0.004

CVP (mm Hg)

9.3 ± 2.3

9.8 ± 2.0

8.6 ± 2.5

0.025

CI_TPTD (L.min⁻¹.m⁻²)

2.98 ± 0.53

2.88 ± 0.58

3.14 ± 0.40

0.003

GEDVI (ml.m⁻²)

783 ± 106

810 ± 88

743 ± 118

0.007

Respiratory rate (min⁻¹)

27 ± 4

27 ± 4

27 ± 4

.807

Tidal volume (ml.kg⁻¹ PBW)

6.0

6.0

6.0

.401

PEEP (cm H₂O)

9.5 ± 2.8

9.9 ± 3.0

8.8 ± 2.4

.082

Pplat (cm H2O)

23 ± 3.3

23.1 ± 3.3

22.7 ± 3.4

.587

Driving pressure (cm H2O)

15 ± 2.0

15 ± 1.9

15 ± 2.0

.770

Cst (mL.cm H2O⁻¹)

25.7 ± 3.8

26.1 ± 3.7

25.1 ± 3.9

.811

PaO₂/FiO₂ (mm Hg)

199 ± 71

193 ± 70

208 ± 73

.349

Arterial lactate (mmol.L⁻¹)

3.8 ± 2.0

4.0 ± 2.1

3.4 ± 1.8

.193