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Table 4 ECMO parameters related to oxygenation

From: Clinical outcomes according to cannula configurations in patients with acute respiratory distress syndrome under veno-venous extracorporeal membrane oxygenation: a Korean multicenter study

 

Total (n = 180)

Jugular (n = 90)

Femoral (n = 90)

P

Cannula size (Fr)

 Drain cannula

22.5 ± 2.5

23.6 ± 2.2

21.3 ± 2.3

<0.001

 Infusion cannula

18.6 ± 2.0

17.6 ± 1.6

19.6 ± 1.9

<0.001

 Cannula distance (mm)

96.0 ± 57.4

85.6 ± 39.7

102.8 ± 65.9

0.146

ECMO flow (L/min/m2)

 At 1 h

2.2 ± 0.5

2.2 ± 0.5

2.2 ± 0.5

0.969

 At 4 h

2.0 ± 0.7

1.9 ± 0.6

2.2 ± 0.7

0.061

 At 24 h

2.2 ± 0.5

2.1 ± 0.5

2.4 ± 0.5

0.022

Blood oxygen content

 PaO2 post-oxygenator (mmHg)

459.2 (359.4–535.9)

460.4 (235.5–526.2)

450.5 (411–554.5)

0.250

 SaO2 post-oxygenator (%)

99.6 (99–99.9)

99.7 (99–99.9)

99.5 (99.2–99.9)

0.650

 PaO2 pre-oxygenator (mmHg)

46.5 (41–55.1)

49.1 (43.2–57.9)

42.8 (40–49.9)

0.046

 SaO2 pre-oxygenator (%)

81.5 (72.6–87)

82.9 (75.9–89.8)

78.4 (71.1–83.9)

0.110

 Difference of blood oxygen content between pre and post-oxygenator (mL/L)

256.9(172.6–390.3)

235.6(150.3–374)

270.3 (234–417.5)

0.061

  1. Values are expressed as mean ± standard deviation or median (interquartile range); significant P values are in italic
  2. ECMO extracorporeal membrane oxygenation, PaO2 partial pressure of oxygen, SaO2 oxygen saturation