Skip to main content

Table 3 Changes in macrocirculatory and microcirculatory variables during fluid challengea

From: Use of near-infrared spectroscopy during a vascular occlusion test to assess the microcirculatory response during fluid challenge

 

Positive fluid challenge (n= 29)

Negative fluid challenge (n= 13)

Variables

Before VE

After VE

Before VE

After VE

SAP, mmHg

94 ± 15

112 ± 15†

104 ± 20

106 ± 11

DAP, mmHg

53 ± 10

57 ± 9

52 ± 9

51 ± 7

MAP, mmHg

66 ± 11

75 ± 10†

69 ± 12

70 ± 7

HR, beats/minute

77 ± 16

75 ± 14

78 ± 13

75 ± 12

SV, mL

61 ± 12

83 ± 19†

64 ± 15

69 ± 14

CO, L/minute

4.7 ± 1.2

6.3 ± 1.7†

4.9 ± 1.5

5.2 ± 1.3

SVV, %

14 (13 to 16)

6 (5 to 7)†

16 (15 to 16)

6 (5 to 8)†

PPV, %

16 (15 to 18)

5 (3 to 6)†

14 (13 to 15)

5 (4 to 8)†

Pre-VOT StO2, %

84 (77 to 91)

88 (79 - 93)

83 (77 to 90)

84 (79 to 91)

desStO2, %/minute

-10.4 (-12.2 to -9.2)

-10.9 (-10.7 to -6.5)

-9.9 (-10.7 to -9.7)

-10.8 (-13.1 to -9.9)

Hyperaemia recovery area, AU

12.6 (7.5 to 21.5)

12.2 (7.3 to 22.9)

12.9 (10.7 to 20.9)

12.8 (8.9 to 19.8)

  1. aCO, cardiac output; DAP, diastolic arterial pressure; HR, heart rate; MAP, mean arterial pressure; SAP, systolic arterial pressure; StO2, tissue oxygen saturation; desStO2, StO2 desaturation slope; recStO2, StO2 recovery slope; PPV, pulse pressure variation; SVV, stroke volume variation; SV, stroke volume; VE, volume expansion; VOT, vascular occlusion test; AU, arbitrary units. Data are means ± SD or medians (25th and 75th percentiles). †P < 0.05 after vs. before volume expansion.