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Related Experiment Videos

Membrane vs bubble oxygenator: clinical comparison.

J E Liddicoat, S M Bekassy, A C Beall

    Annals of Surgery
    |May 11, 1975
    PubMed
    Summary
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    This study shows membrane oxygenators (MO) are superior to bubble oxygenators (BO) for short-term cardiopulmonary bypass. MO use resulted in better hemodynamics, improved blood gases, and reduced postoperative blood loss.

    Area of Science:

    • Cardiovascular Surgery
    • Biomedical Engineering

    Background:

    • Membrane oxygenators (MO) are proven superior for prolonged cardiopulmonary support.
    • Limited data exists on MO efficacy for routine, short-term cardiopulmonary bypass.

    Purpose of the Study:

    • To compare the performance of a specific membrane oxygenator (Modulung-Teflo, MO) against a bubble oxygenator (Miniprime Variflo, BO) in short-term cardiopulmonary bypass.
    • To evaluate hemodynamic parameters, fluid/blood balance, hematologic status, and blood gases.

    Main Methods:

    • A comparative study of 91 patients undergoing cardiopulmonary bypass, divided into three groups based on duration (<60 min, 60-90 min, >90 min).
    • Analysis included hemodynamic monitoring, fluid and blood balance assessment, hematologic studies, and arterial blood gas analysis.
    • Statistical analysis was performed using a DEC PDP-9 computer.

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    Main Results:

    • Membrane oxygenators demonstrated superior hemodynamic parameters and more physiologic arterial blood gases compared to bubble oxygenators.
    • Significantly less postoperative blood loss was observed with the use of membrane oxygenators.
    • Other measured parameters indicated the stability and effectiveness of the membrane oxygenator.

    Conclusions:

    • The Modulung-Teflo membrane oxygenator is effective and stable for routine, short-term cardiopulmonary bypass.
    • Findings support the routine use of membrane oxygenators for this application.
    • Membrane oxygenators offer significant advantages over bubble oxygenators in short-term procedures.