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Table 1 Hemodynamic data during normovolemia (BL), normovolemia with phenylephrine infusion (BL + PHE), hypovolemia (BW) and hypovolemia with phenylephrine infusion (BW + PHE)

From: The increase of vasomotor tone avoids the ability of the dynamic preload indicators to estimate fluid responsiveness

 

BL

BL + PHE

BW

BW + PHE

SV (ml)

0.39 ± 0.04

0.27 ± 0.09

0.25 ± 0.08

0.19 ± 0.05*

AoF (mL . min-1)

71 ± 18

51 ± 15*

53 ± 13*

39 ± 10*

HR (bpm)

214 ± 26

198 ± 33

217 ± 33

201 ± 21

CVP (mm Hg)

3 ± 1

4 ± 1

3 ± 1

5 ± 1

MAP (mm Hg)

76 ± 16

77 ± 12

77 ± 16

81 ± 13

PAP (mm Hg)

38 ± 10

40 ± 15

32 ± 13

38 ± 13

LVEDP (mm Hg)

4.7 ± 5.7

5.7 ± 5.3

5.1 ± 4.7

4.2 ± 4.2

dP/dtmax (mm Hg . s-1)

1544 ± 456

1780 ± 946

1897 ± 1027

1838 ± 899

dP/dtmin (mm Hg . s-1)

-1802 ± 765

-1789 ± 631

-1763 ± 989

-1787 ± 1014

  1. *p < 0.05 vs BL.
  2. AoF: Aortic flow; CVP: Central venous pressure; dP/dtmax and dP/dtmin: Maximum and minimum first derivative of LVP, respectively; HR: Heart rate; LVEDP: Left ventricular end diastolic pressure; MAP and PAP: Mean and pulse aortic pressure, respectively; SV: Stroke volume.