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Intensive Care Medicine Experimental

Table 1 Gastric reactance, blood gases, vital signs, and hemodynamic comparisons for the CG and the SG time points

From: Comparison of gastric reactance with commonly used perfusion markers in a swine hypovolemic shock model

 

CG

SG

 

Variable

N = 62

T-2

N = 31

T-1

N = 39

T0

N = 37

T1

N = 36

T2

N = 21

p

Gastric reactance

       

 XL (− jΩ)

8.9 [7.1, 11.5]

10.8 [8.2, 14.7]

14.9 [11.5, 20.2]

15.6 [8.2, 21.2]

19.8 [15.4, 33.8]

25.7 [19.7, 38.3]

 < 0.001*

Blood gases

       

 Lactate (mmol/L)

2.1 [1.8, 3.4]

2.0 [1.8, 2.8]

2.3 [1.9, 3.0]

2.9 [2.3, 4.0]

5.8 [3.4, 8.2]

8.9 [5.9, 10.1]

 < 0.001*

 pH

7.4 [7.4, 7.5]

7.5 [7.4, 7.5]

7.5 [7.4, 7.5]

7.4 [7.4, 7.5]

7.4 [7.4, 7.5]

7.4 [7.3, 7.4]

 < 0.001*

 PaCO2 (mmHg)

38.4 [34.5, 40.9]

36.8 [33.4, 39.5]

35.2 [33.8, 38.5]

36.1 [31.3, 40.6]

32.0 [28.5, 36.1]

32.9 [26.9, 35.1]

 < 0.001*

 PaO2 (mmHg)

179.0 [150.2, 197.8]

166.0 [149.2, 199.0]

180.0 [139.0, 202.0]

193.0 [152.0, 231.0]

210.0 [140.0, 229.5]

220.5 [160.2, 242.8]

0.170

Vital signs

       

 HR (bpm)

100.0 [92.0, 107.0]

118.0 [101.5, 131.5]

117.0 [95.5, 157.0]

136.0 [101.0, 165.0]

138.0 [100.0, 162.5]

135.0 [120.0, 151.5]

 < 0.001*

 MAP (mmHg)

69.0 [60.5, 72.0]

59.0 [53.0, 61.5]

51.0 [50.0, 55.0]

39.0 [36.0, 44.0]

32.0 [29.0, 36.5]

33.0 [27.5, 37.5]

 < 0.001*

 Temperature (°C)

38.0 [37.7, 38.2]

38.1 [37.0, 39.0]

38.7 [37.8, 39.4]

39.0 [38.0, 39.5]

39.1 [38.2, 39.9]

39.4 [39.0, 39.8]

 < 0.001*

 CVP (mmHg)

10.0 [9.0, 11.0]

8.0 [7.0, 9.0]

8.0 [6.0, 12.0]

7.5 [4.0, 9.2]

6.0 [3.0, 9.0]

7.0 [3.0, 8.2]

 < 0.001*

Hemodynamic

       

 PAWP (mmHg)

–

10.0 [8.0, 15.8]

7.0 [5.0, 14.2]

7.0 [5.0, 12.5]

8.0 [6.0, 11.0]

6.0 [4.0, 8.0]

0.015*

 CO (L/min)

–

3.5 [3.3, 4.8]

3.2 [2.6, 3.9]

2.9 [2.3, 3.4]

2.6 [2.2, 2.9]

2.9 [2.2, 3.1]

 < 0.001*

 SvO2 (%)

–

66.0 [48.2, 76.0]

62.0 [49.0, 72.8]

55.0 [49.0, 61.5]

47.0 [33.2, 60.0]

53.0 [47.0, 57.0]

 < 0.001*

  1. Data presented as Median [IQR]; p for Kruskal–Wallis rank-sum test. *for statistically significant results (p < 0.05)
  2. bpm beat per minute, CG control group, CO cardiac output, CVP central venous pressure, HR heart rate, MAP mean arterial pressure, PaCO2 partial pressure of carbon dioxide in arterial blood, PaO2 partial pressure of oxygen in arterial blood, PAWP pulmonary artery wedge pressure, SG shock group; SVO2 mixed venous saturation, XL gastric reactance
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