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Related Experiment Videos

Vortex pumping for routine cardiac surgery: a comparative study.

D R Wheeldon1, D W Bethune, R D Gill

  • 1Papworth Hospital, Cambridge, UK.

Perfusion
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

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Vortex pumps offer improved blood handling during open-heart surgery compared to roller pumps, showing better platelet preservation and reduced complement activation. Further research is needed to confirm clinical patient outcome benefits.

Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering
  • Perfusion Technology

Background:

  • Vortex pumps are increasingly considered for arterial pumping in routine open-heart surgery.
  • Traditional roller pumps have been the standard, but their impact on blood components is a concern.
  • Evaluating novel pumping technologies is crucial for improving patient outcomes in cardiac procedures.

Purpose of the Study:

  • To prospectively evaluate the Biomedicus vortex pump against the Stockert roller pump in routine coronary artery surgery.
  • To compare the two pump types based on hematological parameters, fluid balance, transfusion needs, complement activation, hemolysis, and microbubble transmission.

Main Methods:

  • A prospective randomized study involving 16 patients undergoing coronary artery surgery.

Related Experiment Videos

  • Patients were randomized into two groups: one using a Stockert roller pump (Group S) and the other a Biomedicus vortex pump (Group B).
  • Key outcomes measured included hematology, fluid balance, transfusion requirements, complement activation, hemolysis, and microbubble transmission.

    • Main Results:

    • Group B (vortex pump) demonstrated significant improvements in preserving platelet counts compared to Group S (roller pump).
    • Vortex pumping led to decreased complement activation and reduced microbubble transmission.
    • While requiring different initiation/termination techniques, the vortex pump's afterload sensitivity posed no practical issues for perfusionists.

    Conclusions:

    • Vortex pumping appears to offer superior blood handling characteristics for routine open-heart surgery.
    • The observed benefits in platelet preservation, complement activation, and microbubble transmission suggest potential advantages.
    • Further extensive clinical trials are necessary to determine if these improvements translate into measurable clinical benefits for patients.