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Table 4 Parameters were measured in within 5 min of start of plasma volume measurement

From: Blood volume in patients likely to be preload responsive: a post hoc analysis of a randomized controlled trial

 

All

Preload responder

Preload non-responder

Difference

p

Heart rate, bpm

88 (74–95)

89 (71–95)

84 (76–94)

− 2 (− 11 to 8)

0.76

SBP, mmHg

114 (95–127)

115 (98–129)

106 (92–120)

6 (− 19 to 6)

0.29

MAP, mmHg

77 (66–87)

78 (68–92)

72 (65–80)

− 6 (− 14 to 3)

0.20

CVP, mmHg

3 (0–8)

2 (0–8)

4 (2–8)

1 (− 2 to 3)

0.66

Lactate, mmol/l

2.4 (1.8–3.1)

2.6 (1.9–3.1)

2.2 (1.7–2.9)

0 (− 1 to 0)

0.50

ScvO2, %

73 (68–76)

73 (68–77)

73 (67–75)

0.2 (− 0.9 to 0.4)

0.91

Hemoglobin, g/l

115 (103–124)

115 (102–123)

115 (111–126)

4 (− 4 to 12)

0.27

Hematocrit

0.35 (0.32–0.38)

0.35 (0.31–0.38)

0.36 (0.34–0.39)

− 0.01 (− 0.01 to 0.04)

0.28

  1. Hematocrit described as fraction. Data are presented as median (IQR) or mean difference (95% CI)
  2. Comparisons between preload responders and preload non-responders were performed using Student’s t-test. No adjustments for multiple comparisons were made
  3. SBP, systolic blood pressure; MAP, mean arterial pressure; CVP, central venous pressure