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  • Title: Evaluation of oxygenators and centrifugal pumps for long-term pediatric extracorporeal membrane oxygenation.
    Author: Thiara AP, Hoel TN, Kristiansen F, Karlsen HM, Fiane AE, Svennevig JL.
    Journal: Perfusion; 2007 Sep; 22(5):323-6. PubMed ID: 18416217.
    Abstract:
    OBJECTIVE: Two extracorporeal membrane oxygenation (ECMO) circuits for children under 10 kg were evaluated and compared for plasma leakage, hemolysis, blood transfusions, and durability. METHODS: Group A (n=20) was supported by ECMO circuits with the Minimax oxygenator and the Biomedicus centrifugal pump. Group B (n=10) was supported by ECMO circuits with the Lilliput 2 ECMO oxygenator and the Rotaflow centrifugal pump. RESULTS: ECMO circuit durability, as measured by oxygenator lifespan, was significantly better in Group B than in Group A (p = 0.04). There was significantly lower hemolysis, measured by plasma free hemoglobin, in Group B (p = 0.019), and patients in Group B had significantly less need for antithrombin III transfusion (p = 0.004). No plasma leakage was observed in Group B oxygenators, but plasma leakage was observed in all Group A oxygenators. CONCLUSION: The combination of a Rotaflow centrifugal pump and Lilliput 2 ECMO oxygenator in pediatric ECMO circuits improved durability and reduced circuit-induced hemolysis. This improvement may be due to the low priming volume, the oxygenator's plasma leakage resistance, the suspended rotor of the centrifugal pump, or a combination of these factors.
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