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Table 4 Sublingual microcirculatory variables and surrogate markers of tissue perfusion

From: Decreased renal cortical perfusion, independent of changes in renal blood flow and sublingual microcirculatory impairment, is associated with the severity of acute kidney injury in patients with septic shock

Timepoint

D0

D1

D2

D4

Total Vessel Density (mm/mm2)

Severe

17.0 ± 3.16

17.3 ± 4.12

18.0 ± 2.70

17.9 ± 2.96

Non-severe

18.2 ± 2.78

17.8 ± 3.20

17.5 ± 3.64

15.7 ± 2.51

Perfused Vessel Density (mm/mm2)

Severe

14.8 (11.8–16.7)

16.2 (12.9–18.6)

16.8 (14.6–18.1)

16.8 (14.3–19.0)

Non-severe

14.4 (12.9–19.1)

14.4 (12.9–19.1)

15.8 (13.1–19.1)

14.3 (12.0–16.8)

Microcirculatory Flow Index (a.u.)

Severe

2.55 (2.17–2.82)

2.76 (2.61–2.86)

2.79 (2.59–2.9)

2.84 (2.77–2.91)

Non-severe

2.74 (2.54–2.81)

2.74 (2.63–2.81)

2.83 (2.71–2.91)

2.77 (2.66–2.98)

Microcirculatory Heterogeneity Index (a.u.)

Severe

0.3 (0–0.78)

0 (0–0.36)

0 (0–0.17)

0 (0–0.09)

Non-severe

0.14 (0–0.60)

0 (0–0.13)

0 (0–0.02)

0 (0–0.27)

Lactate (mmol/L)

Severe

3.9 (2.72–7.35)

2.3 (1.7–3.8)

1.9 (1.4–2.8)

1.6 (1.1–2.1)

Non-severe

2.7 (1.9–3.5)*

1.6 (1.3–1.7)

1.3 (1.1–1.5)

1.1 (1.0–1.4)

ScvO2 (%)

Severe

70.6 (62.4–76.7)

71.5 (65.6–77.5)

70.1 (66–77.3)

67.3 (62.5–73.2)

Non-severe

70.4 (65.4–73.1)

70.3 (64.4–75.5)

70.1 (65.5–72.8)

60 (58.9–69.4)

ScvCO2-SaCO2 (kPa)

Severe

0.89 (0.54–1.16)

0.67 (0.54–0.92)

0.6 (0.5–0.84)

0.77 (0.58–1.04)

Non-severe

0.88 (0.75–1.11)

0.85 (0.74–0.91)

0.76 (0.66–0.83)

0.67 (0.57–0.89)

  1. AKI + (KDIGO 3), AKI–(KDIGO 0–2), *p < 0.05 between patient groups