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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 cannula22.5 ± 2.523.6 ± 2.221.3 ± 2.3<0.001
 Infusion cannula18.6 ± 2.017.6 ± 1.619.6 ± 1.9<0.001
 Cannula distance (mm)96.0 ± 57.485.6 ± 39.7102.8 ± 65.90.146
ECMO flow (L/min/m2)
 At 1 h2.2 ± 0.52.2 ± 0.52.2 ± 0.50.969
 At 4 h2.0 ± 0.71.9 ± 0.62.2 ± 0.70.061
 At 24 h2.2 ± 0.52.1 ± 0.52.4 ± 0.50.022
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