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Related Experiment Video

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An Open-Source Normothermic Perfusion System Designed for Research Scientists
11:23

An Open-Source Normothermic Perfusion System Designed for Research Scientists

Published on: July 18, 2025

Initial results of an optimized perfusion system.

C T Starck1, D Bettex, C Felix

  • 1Clinic of Cardiac and Vascular Surgery, University Hospital Zurich, 8091 Zurich, Switzerland. christophthomas.starck@usz.ch

Perfusion
|February 14, 2013
PubMed
Summary

Optimizing extracorporeal circulation (ECC) systems reduced priming volume and hemodilution. This improved patient outcomes by decreasing blood transfusions and inflammatory responses during cardiac surgery.

Keywords:
SIRScardiopulmonary bypassextracorporeal circulationoptimized perfusion systemtransfusion

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Area of Science:

  • Cardiovascular Surgery
  • Perfusion Technology
  • Biomedical Engineering

Background:

  • Extracorporeal circulation (ECC) can have negative effects.
  • Optimization efforts focused on reducing priming volume, foreign surface area, and microbubble activity.
  • Suction blood management was also optimized.

Purpose of the Study:

  • To evaluate the impact of an optimized perfusion system (OPS) compared to a standard perfusion system (SPS).
  • To assess changes in priming volume, hemodilution, and inflammatory markers.
  • To determine the effect on blood transfusion requirements.

Main Methods:

  • Retrospective study of 60 patients undergoing elective procedures.
  • Patients divided into two groups: optimized perfusion system (OPS-group, n=30) and standard perfusion system (SPS-group, n=30).
  • Comparison of demographic data, operation time, ECC time, and cross-clamp time.

Main Results:

  • No significant differences in patient demographics or operation time.
  • Longer ECC and cross-clamp times in the OPS group.
  • Significantly lower effective priming volume (775ml vs 1610ml), reduced hemoglobin drop (2.7g/dl vs 4.2g/dl), and lower C-reactive protein levels (121 U/l vs 164 U/l) in the OPS group.
  • A 33% reduction in overall blood transfusions and an increase in patients not requiring transfusions (53% vs 37%) were observed.

Conclusions:

  • The optimized perfusion system significantly reduced priming volume and subsequent hemodilution.
  • The OPS led to a reduction in blood transfusions and the inflammatory response.
  • These findings suggest improved patient outcomes with the optimized perfusion strategy.