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Table 3 Hemodynamic readings taken throughout the four stages of measurement

From: Non-invasive stroke volume measurement and passive leg raising predict volume responsiveness in medical ICU patients: an observational cohort study

 

Stage 1

Stage 2

P 2,1

Stage 3

P 3,1

Stage 4

P 4,1

Responders

       

   SV (ml)

68 ± 25

82 ± 30

0.001

70 ± 26

0.76

86 ± 31

0.004

   SV % change from stage 1

 

21.0 ± 12.5

 

2.4 ± 7.8

 

26.3 ± 14.2

 

   CO (L/min)

6.8 ± 2.5

8.0 ± 2.8

0.03

6.9 ± 2.6

0.89

8.3 ± 3.1

0.009

   FTc (ms)

363 ± 70

380 ± 68

0.22

356 ± 59

0.62

393 ± 66

0.03

   MAP (mmHg)

68 ± 13

72 ± 11

0.11

70 ± 11

0.41

71 ± 16

0.38

   Heart rate (beats/min)

101 ± 20

99 ± 21

0.64

100 ± 21

0.81

99 ± 20

0.61

   Pulse pressure (mmHg)

42 ± 14

45 ± 14

0.23

45 ± 13

0.30

49 ± 16

0.02

   CVP (mmHg)

7.8 ± 4.9

    

9.9 ± 3.9

0.10

Non-responders

       

   SV (ml)

87 ± 30

91 ± 33

0.58

88 ± 30

0.99

90 ± 31

0.62

   SV % change from stage 1

 

3.2 ± 10.4

 

0.3 ± 5.9

 

3.5 ± 8.6

 

   CO (L/min)

8.0 ± 2.9

8.4 ± 3.5

0.46

7.9 ± 2.9

0.97

8.2 ± 3.1

0.71

   FTc (ms)

398 ± 66

404 ± 78

0.66

399 ± 68

0.89

405 ± 68

0.58

   MAP (mmHg)

74 ± 14

74 ± 16

0.95

73 ± 14

0.72

74 ± 16

0.97

   Heart rate (beats/min)

93 ± 20

94 ± 21

0.84

93 ± 20

0.91

92 ± 20

0.75

   Pulse pressure (mmHg)

48 ± 15

49 ± 17

0.97

49 ± 18

0.89

49 ± 19

0.83

   CVP (mmHg)

8.1 ± 4.8

    

11.3 ± 5.5

0.01

  1. Except for the comparison of the stage 1 and 4 CVP, the Bonferroni adjusted level of significance for all P values shown is 0.01.
  2. CO = cardiac output; CVP = central venous pressure; FTc = corrected flow time; MAP = mean arterial pressure; SV = stroke volume.
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Critical Care

ISSN: 1364-8535