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Related Experiment Videos

Low flow veno-venous ECMO: an experimental study.

M Calderón1, R Verdín, J Galván

  • 1Department of Circulatory Support, "La Raza" Medical Center and Military School of Medicine, México City.

The Journal of Extra-Corporeal Technology
|December 9, 1993
PubMed
Summary

This study explored a less invasive, low-flow veno-venous extracorporeal membrane gas exchange method for respiratory failure. The technique proved feasible, achieving adequate gas exchange with minimal hemodynamic impact in canine models.

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Area of Science:

  • Cardiopulmonary support
  • Respiratory physiology
  • Medical device innovation

Background:

  • Extracorporeal membrane oxygenation (ECMO) and extracorporeal carbon dioxide removal (ECCO2R) are established treatments for severe respiratory failure.
  • These methods necessitate full cardiopulmonary bypass, leading to significant morbidity.
  • A less invasive, low-flow extracorporeal gas exchange system is needed.

Purpose of the Study:

  • To investigate the feasibility of an efficient low-flow veno-venous extracorporeal membrane gas exchange system.
  • To assess the efficacy and safety of this novel approach in a preclinical model.

Main Methods:

  • Four mongrel dogs (12 kg) underwent veno-venous extracorporeal membrane gas exchange.
  • A jugular dialysis catheter, low-flow roller pump (10 ml/min), and membrane oxygenator were used for 4 hours.

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  • Ventilatory settings included a respiratory rate of 4 breaths/min, FiO2 of 21%, and increased dead space.

    • Main Results:

    • Successful gas exchange was achieved, with notable pO2 (139 mmHg), pCO2 (24 mmHg), and saturation (99.4%).
    • The procedure demonstrated minimal hemodynamic alterations.
    • No significant hematuria was observed, indicating a lack of major renal complications.

    Conclusions:

    • A low-flow, less aggressive veno-venous extracorporeal membrane gas exchange system is feasible.
    • This approach shows promise as a potentially safer alternative to conventional ECMO/ECCO2R.
    • Further research is warranted to explore its clinical potential.